Manual Smar Tt301

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Index III

INTRODUCTION

The TT301 is a transmitter mainly intended for measurement of temperature using RTDs or thermocouples, but can alsoaccept other sensors with resistance or mV output such as: pyrometers, load cells, resistance position indicators, etc.The digital technology used in the TT301 enables the choice of several output functions, an easy interface between thefield and the control room and several interesting features that reduce considerably the installation, operation andmaintenance costs.

The TT301, besides the normal functions offered by other smart transmitters, offers the following functions:

SPECIAL SENSOR : the output follows a mV or Ohm input according to a 16-point linearization table.

CONTROLLER : the process variable is compared to a setpoint. The deviation acts on the output signalaccording to a PID algorithm (Optional).

BATCH : setpoint generator allowing pre-programmed recipes of up to 2-week duration in 16points.

LOCAL ADJUST : not only for lower and upper value, sensor-type, operation mode, indication, setpoint,PID parameters... as well. In other words you do not need a Hand-Held Terminal.

PASSWORD : three configurable levels for different functions.

CHANGE COUNTER : indicates the number of changes in each functions.

SPECIAL- SENSOR-UNIT : allows the digital output and reading to indicate one of over 100 standard engineeringunits or any special unit with up to 5 characters.

Get the best result of the TT301 by carefully reading these instructions.

TT301 – Operation & Maintenance Instruction ManualIV

NOTE:

This Manual is compatible with version 2.XX, where 2 denotes software Version and XXsoftware "RELEASE". There indication 2.XX, the Manual is compatible with any"RELEASE" of software version 2.

Index V

Table of Contents1 INSTALLATION PAGE

GENERAL................................................................................................................................................................1.1MOUNTING .............................................................................................................................................................1.1ELECTRIC WIRING ................................................................................................................................................1.1

2 OPERATION

FUNCTIONAL DESCRIPTION - HARDWARE.......................................................................................................2.1MUX-Multiplexer ..........................................................................................................................................2.1Signal Conditioner .......................................................................................................................................2.1A/D Converter ..............................................................................................................................................2.1Signal Isolator..............................................................................................................................................2.1CPU - Central Processing Unit & PROM ....................................................................................................2.1D/A Converter ..............................................................................................................................................2.1Output ..........................................................................................................................................................2.1Modem.........................................................................................................................................................2.1Power Supply...............................................................................................................................................2.1Power Isolation ............................................................................................................................................2.1Display Controller ........................................................................................................................................2.1Local Adjustment .........................................................................................................................................2.2

FUNCTION DESCRIPTION - SOFTWARE ............................................................................................................2.2Input .............................................................................................................................................................2.2Digital Filter..................................................................................................................................................2.2Input Trim.....................................................................................................................................................2.2Standard Sensor Linearization & Compensation .......................................................................................2.2Special Sensor ............................................................................................................................................2.2Ranging .......................................................................................................................................................2.2Time Generator ...........................................................................................................................................2.2Setpoint........................................................................................................................................................2.2PID (Optional) ..............................................................................................................................................2.2Auto/Manual.................................................................................................................................................2.2Limits............................................................................................................................................................2.2Output ..........................................................................................................................................................2.2Current Trim.................................................................................................................................................2.2Display .........................................................................................................................................................2.2

TEMPERATURE SENSORS...................................................................................................................................2.2Thermocouples............................................................................................................................................2.2

THERMORESISTANCES (RTDs)...........................................................................................................................2.4THE DISPLAY..........................................................................................................................................................2.5

Monitoring ....................................................................................................................................................2.5ALARM.....................................................................................................................................................................2.6

3 PROGRAMMING USING TERMINAL

THE HAND-HELD TERMINAL................................................................................................................................3.1Fitting the Battery.........................................................................................................................................3.1Fitting the DATAPACK and RAMPACK......................................................................................................3.1Keyboard......................................................................................................................................................3.1Turning the Unit On and Off ........................................................................................................................3.1Use of <ON/CLEAR> key or the Function EXIT .........................................................................................3.2

TERMINAL PROGRAMMING TREE ......................................................................................................................3.2ON LINE SINGLE UNIT CONFIGURATION...........................................................................................................3.2INFORMATION - INFO............................................................................................................................................3.4CONFIGURATION - CONF.....................................................................................................................................3.4RERANGING THE TT301 .......................................................................................................................................3.5RERANGING WITHOUT REFERENCE .................................................................................................................3.5RERANGING WITH REFERENCE.........................................................................................................................3.6UNIT.........................................................................................................................................................................3.8DAMPING ................................................................................................................................................................3.8OUTPUT ..................................................................................................................................................................3.8BURNOUT ...............................................................................................................................................................3.9DISPLAY..................................................................................................................................................................3.9SENSOR - Sensor...................................................................................................................................................3.9

TT301 – Operation & Maintenance Instruction ManualVI

3 PROGRAMMING USING TERMINAL (Cont.) PAGE

Special Sensor Configuration....................................................................................................................................3.10Special Sensor Special Unit Selection......................................................................................................................3.11Special Sensor Table ................................................................................................................................................3.11PID Module (Optional) ...............................................................................................................................................3.11

MONIT - Monitoring..............................................................................................................................................................3.13CNTRL - CONTROL ............................................................................................................................................................3.13

Operation Mode - OP_MODE....................................................................................................................................3.13INDIC - Indication.................................................................................................................................................................3.13TUNING................................................................................................................................................................................3.14SAF. LIMITS - Control Limits ...............................................................................................................................................3.14SP-TABLE - Setpoint Table .................................................................................................................................................3.14TRIM.....................................................................................................................................................................................3.14

Current TRIM (4-20 mA Output) ................................................................................................................................3.14Reading TRIM (Input) ................................................................................................................................................3.15

MAINTENANCE - MAINT.....................................................................................................................................................3.16FORMAT ..............................................................................................................................................................................3.16SERIAL NUMBER................................................................................................................................................................3.16CHANGE COUNTER - OP_COUNT ...................................................................................................................................3.16PASSWORDS......................................................................................................................................................................3.17CONFIGURATION LEVEL...................................................................................................................................................3.17WP-PROT - WRITE PROTECT...........................................................................................................................................3.17ALARM - ALARM .................................................................................................................................................................3.17

Configuring Alarms ....................................................................................................................................................3.18ACKNOWLEDGING ALARMS.............................................................................................................................................3.18ON-LINE MULTIDROP OPERATION..................................................................................................................................3.18CONFIGURATING THE TT301 FOR MULTIDROP............................................................................................................3.19CONFIGURATION IN MULTIDROP MODE........................................................................................................................3.19

4 PROGRAMMING USING LOCAL ADJUST

THE MAGNETIC TOOL .........................................................................................................................................................4.1RERANGING USING THE LOCAL ZERO AND SPAN ADJUSTMENTS IN SIMPLE MODE .............................................4.1COMPLETE LOCAL ADJUSTMENT.....................................................................................................................................4.2LOCAL PROGRAMMING TREE............................................................................................................................................4.2OPERATION - [OPER]...........................................................................................................................................................4.3BATCH - [BATCH]..................................................................................................................................................................4.4TUNING - [TUNE]...................................................................................................................................................................4.5CONFIGURATION - [CONF]..................................................................................................................................................4.7ESCAPE - [ESC] ....................................................................................................................................................................4.9

5 MAINTENANCE PROCEDURES

GENERAL ..............................................................................................................................................................................5.1DIAGNOSIS WITH SMAR HAND-HELD TERMINAL ...........................................................................................................5.1ERROR MESSAGES.............................................................................................................................................................5.1TROUBLESHOOTING WITH TRANSMITTER .....................................................................................................................5.2DISASSEMBLY PROCEDURE..............................................................................................................................................5.3

Sensor..........................................................................................................................................................................5.3Electronic Circuits ........................................................................................................................................................5.3

REASSEMBLY PROCEDURE...............................................................................................................................................5.3INTERCHANGEABILITY........................................................................................................................................................5.3RETURNING MATERIALS ....................................................................................................................................................5.3Exploded View........................................................................................................................................................................5.3SPARE PARTS LIST FOR TRANSMITTER..........................................................................................................................5.4ACESSORIES ........................................................................................................................................................................5.5

Index VII

6 TECHNICAL DATA

FUNCTIONAL SPECIFICATIONS............................................................................................................................................................6.1Inputs...............................................................................................................................................................................................6.1Output Signal ..................................................................................................................................................................................6.1Power Supply ..................................................................................................................................................................................6.1Load Limitation................................................................................................................................................................................6.1Indication.........................................................................................................................................................................................6.1Hazardous Location Certification ...................................................................................................................................................6.1Zero and Span Adjustment.............................................................................................................................................................6.1Temperature Limits .........................................................................................................................................................................6.1Loss of Input (Burnout)/Failure Alarm ............................................................................................................................................6.1Humidity Limits................................................................................................................................................................................6.1Turn-on Time...................................................................................................................................................................................6.1Update Time....................................................................................................................................................................................6.1Damping..........................................................................................................................................................................................6.1Configuration...................................................................................................................................................................................6.1HHT Main Features.........................................................................................................................................................................6.1

PERFORMANCE SPECIFICATIONS.......................................................................................................................................................6.1Accuracy..........................................................................................................................................................................................6.1Ambient Temperature Effect...........................................................................................................................................................6.1Power Supply Effect........................................................................................................................................................................6.1Vibration Effect................................................................................................................................................................................6.1Electro-Magnetic Interference Effect ..............................................................................................................................................6.1

PHYSICAL SPECIFICATION....................................................................................................................................................................6.2Electrical Connection ......................................................................................................................................................................6.2Material of Construction..................................................................................................................................................................6.2Mounting .........................................................................................................................................................................................6.2Weight .............................................................................................................................................................................................6.2

CONTROL CHARACTERISTICS (OPTIONAL) .......................................................................................................................................6.2Alarm ...............................................................................................................................................................................................6.2

ORDERING CODE ...................................................................................................................................................................................6.3

Index 1.1

INSTALLATION

GENERAL

The overall accuracy of temperature and other mea-surements depends on several variables. Although thetransmitter has an outstanding performance, properinstallation is essential, in order to maximize its perfor-mance.

Among all factors, which may affect transmitter accura-cy, environmental conditions are the most difficult tocontrol. There are, however, ways of reducing theeffects of temperature, humidity and vibration.

Temperature fluctuation effects can be minimized bylocating the transmitter in areas protected from extremeenvironmental changes.

In warm environments, the transmitter should beinstalled to avoid, as much as possible, direct exposureto the sun. Installation close to lines and vesselssubjected to high temperatures should also be avoided.For temperature measurements, sensors with cooling-neck can be used or the sensor can be mountedseparated from the transmitter housing.

Use of sun shades or heat shields to protect thetransmitter from external heat sources should beconsidered, if necessary.

Humidity is fatal to electronic circuits. In areas subject-ed to high relative humidity, the O-rings for the elec-tronics cover must be correctly placed. Removal of theelectronics cover in the field should be reduced to theminimum necessary, since each time it is removed, thecircuits are exposed to the humidity. The electroniccircuit is protected by a humidity proof coating, butfrequent exposures to humidity may affect the protec-tion provided. It is also important to keep the coverstightened in place. Every time they are removed, thethreads are exposed to corrosion, since these partscannot be protected by painting. Code-approvedsealing methods on conduit entering the transmittershould be employed.

Measurement error can be decreased by connectingthe sensor as close to the transmitter as possible andusing proper wires (see Section II, Operation).

WARNING:

Do not remove the graphite grease from the covers, orthey may jam.

MOUNTINGThe transmitter may be mounted in two basic ways, asfollows:

- Separated from the sensor, using optionalmounting brackets.

- Mounted on the sensor assembly.

Using the brackets, the mounting may be done inseveral positions, as shown on Fig. 1.3.

One of the conduit inlets for electrical connection isused to mount the sensor integral to the temperaturetransmitter (see Fig. 1.2).

For better visibility, the digital indicator may be rotatedin steps of 90E (see Section V, Maintenance).

ELECTRIC WIRINGAccess the wiring block by removing the ElectricalConnection Cover. This cover can be locked closed bythe cover locking screw (Fig. 1.1). To release the cover,rotate the locking screw clockwise.

Fig. 1.1 – Cover Locking

Cable access to wiring connections is obtained by oneof the two conduit outlets. Conduit threads should besealed by means of code-approved sealing methods.The unused outlet connection should be pluggedaccordingly.

The wiring block has screws on which terminals typefork or ring can be fastened, see Fig. 1.2.

For convenience there are three ground terminals: oneinside the cover and two external, located close to theconduit entries.

Fig. 1.2 – Ground Terminal

TT301 – Operation & Maintenance Instruction Manual1.2

Fig. 1.3 – Dimensional Drawing and Mounting Positions

Use of twisted pair (16 AWG) cables is recommended.

WARNING:

Do not connect the Power Supply to the sensor terminals(Terminals 1, 2, 3 and 4).

Avoid routing signal wiring close to power cables orswitching equipment.

The TT301 is protected against reversed polarity.Connection of the TT301 working as transmitter shouldbe performed as in Fig. 1.4.

Fig. 1.4 – Wiring Diagram for the TT301 Working as Transmitter

Connection of the TT301 working as a controller(Optional) should be as indicated in Figure 1.5.

Fig. 1.5 – Wiring Diagram for the TT301 Working as Controller

Connection of the TT301 in multidrop configurationshould be done as in Fig. 1.8. Note that a maximum of15 transmitters can be connected on the same line andthat they should be connected in parallel. When manytransmitters are connected to the same line, calculatethe voltage drop through the 250 Ohm resistor andverify that the voltage of the power supply is enough(Fig 1.6).

Wiring diagram for the TT301 in multidrop.

ATTENTION:

For proper operation, the Hand-Held Terminal requires aminimum load of 250 Ohm between it and the power supply.

Index 1.3

The Hand-Held Terminal can be connected to thecommunication terminals of the transmitter or at anypoint of the signal line by using the interface withalligator clips.

It is also recommended to ground the shield of shieldedcables at only one end. The not grounded end must becarefully isolated.

NOTE:

Make sure that the transmitter is operating within theoperating area as shown on the load diagram (Fig. 1.6).Communication requires a minimum load of 250 Ohm.

The sensor should be connected as per Fig. 1.7.

IMPORTANT:

When operating with dual sensor, the sensors can not beboth grounded. At least one has to be not grounded forproper operation of TT301.

Fig. 1.7 – Sensor Wiring

Fig. 1.8 – Wiring Diagram for the TT301 in Multidrop Configuration

TT301 – Operation & Maintenance Instruction Manual1.4

Operation 2.1

2 - OPERATION

The TT301 accepts signals from mV generators suchas thermocouples or resistive sensors such as RTDs.The criteria is that the signal is within the range of theinput. For mV, the range is -50 to 500 mV and forresistance, 0-2000 Ohm.

FUNCTIONAL DESCRIPTION-HARDWARERefer to the block diagram (Fig. 2.1). The function ofeach block is described below.

MUX-MultiplexerThe MUX multiplexes the sensor terminals to the signalconditioning section ensuring that the voltages aremeasured between the correct terminals.

Signal ConditionerIts function is to apply the correct gain to the inputsignals to make them suit the A/D - converter.

A/D ConverterThe A/D converts the input signal to a digital format forthe CPU.

IsolatorIts function is to isolate the control and data signalbetween the input and the CPU.

CPU - Central Processing Unit & PROMThe CPU is the intelligent portion of the transmitter,being responsible for the management and operation ofall other blocks: linearization, cold junctioncompensation and communication. The program isstored in the PROM as well as the linearization data forthe temperature sensors.For temporary storage of data, the CPU has an internal

RAM, the data in the RAM is lost if the power isswitched off, however the CPU also has an internalnonvolatile EEPROM where data that must be retainedis stored.Examples of such data are: calibration,configuration and identification data.

D/A ConverterConverts the digital output data from the CPU to ananalog signal.

OutputControls the current in the line feeding the transmitter.

It acts as a variable resistive load whose value dependson the voltage from the D/A converter.

ModemModulates a communication signal on the current line.A "1" is represented by 1200 Hz and a "0", by 2200 Hz.These signals are symmetric and do not affect the DClevel of the 4-20 mA signal.

Power SupplyTakes power of the loop-line to power the transmitterscircuit. This is, of course, limited to 3.9 mA.

Power IsolationIts function is to isolate power supply between the inputand the CPU.

Display ControllerReceives data from the CPU informing which segmentsof the Liquid Crystal Display,should be turned on.

Fig. 2.1 – TT301 Block Diagram

TT301 – Operation and Maintenance Instruction Manual2.2

Local AdjustmentTwo switches that are magnetically activated. They canbe activated by the magnetic tool without mechanical orelectrical contact.

FUNCTIONAL DESCRIPTION - SOFTWARERefer to the block diagram (Fig. 2.2). The function ofeach block is described below.

InputCalculates the actual mV or Ohm from the valuesensed by the input circuitry.

Digital FilterThe digital filter is a low-pass filter with an adjustabletime constant. It is used to smooth noisy signals. TheDamping value is the time required for the output toreach 63.2% for a step input of 100%.

Input TrimHere, the value obtained by READING-TRIM is used tocorrect the transmitter for long term drift.

Standard Sensor Linearization & CompensationHere, the mV and Ohm measurements are linearizedand cold-junction compensated according to the sensorcharacteristics stored in the CPU. The CPU containsdata about most standard sensors available.

Special SensorHere, the mV and Ohm measurements may belinearized according to a customer specifiedlinearization table stored in TABLE - X,Y. Sensor TYPEand CONNECTION is specified as well. In UNIT, thedesired engineering unit is configured. This unit is usedin all communication with the transmitter and on thedisplay. The LRL, URL and MINimum Span are used tolimit the range that can be set, to be within the tableand device accuracy.

RangingIt is used to set the process values corresponding to theoutput 4 and 20 mA in transmitter mode or processvariable 0 and 100% in PID mode. In transmitter modethe LOWER-VALUE is the point corresponding to 4 mA,and UPPER-VALUE is the point corresponding to 20mA. In PID mode, the LOWER-VALUE corresponds PV= 0% and UPPER-VALUE corresponds to PV = 100%.

Time Generator (Optional)Counts the time to be used by the Setpoint generatorfunction. It may be paused by using PAUSE andreseted to zero by using RESET.

Setpoint (Optional)Here, the setpoint is adjusted in INDIC. In this block,Setpoint tracking may be activated in SP-TRACKING.The setpoint may also be generated automatically byturning the SP-GENERATOR ON. When running, thesetpoint generator will ramp and dwell the setpointaccording to a table (recipe) configured in SP-TABLE.

PID (Optional)First the error is calculated as SP-PV or PV-SPdepending on which action (direct or reverse) isconfigured in ACTION.

Auto/Manual (Optional)The Auto/Manual mode is toggled in INDIC . In Manual,MV may be adjusted by the user in the INDIC option.The POWER-ON option is used here to determine inwhich mode the controller should be upon powering iton.

Limits (Optional)This block makes sure that the MV does not go beyondits minimum and maximum limits as established by theHIGH-LIMIT and LOW-LIMIT. It also makes sure thatthe Rate-of-Change does not exceed the value set inOUT-CHG/S. These values are adjusted in the SAFETYLIMITS option.

OutputCalculates the current proportional to the processvariable or Manipulated variable to be transmitted onthe 4-20 mA output, depending if the PID Module is ONor OFF. This block also contains the constant currentfunction configured in OUTPUT.

Current TrimThe 4 mA-TRIM and 20 mA-TRIM are used to make thetransmitter current comply with a current standard,should a deviation arise.

DisplayAlternates two indications as configured in DISPLAY.The engineering unit for the process variable can beselected in UNIT.

TEMPERATURE SENSORSThe TT301, as previously explained, accepts severaltypes of sensors. The TT301 is specially designed fortemperature measurement using thermocouples orthermoresistances (RTDs).

Some basic concepts about these sensors arepresented below.

ThermocouplesThermocouples are the mot widely used sensors inindustrial temperature measurements.

Thermocouples consist of two wires made from differentmetals or alloys joined at one end, called measuringjunction. The measuring junction should be placed atthe point of measurement. The other end of thethermocouple is open and connected to thetemperature transmitter. This point is called referencejunction or cold junction.

For most applications, the Seebeck effect is sufficientto explain thermocouple behavior:

∫ ++= ).1

(dt

dPVTdedt

TreKpMV

Operation 2.3

Fig. 2.2 – Software Flow Chart


How the Thermocouple WorksWhen there is a temperature difference along a metalwire, a small electric potential, unique to every alloy, willoccur. This phenomenon is called Seebeck effect.

When two wires of dissimilar metals are joined in oneend, and left open in the other, a temperature differencebetween the two ends will result in a voltage since thepotentials generated by the dissimilar materials aredifferent and does not cancel each other out. Now, twoimportant things must be noted. First: the voltagegenerated by the thermocouple is proportional to thedifference between the measuring-junction and the coldjunction temperatures. Therefore the temperature at thereference junction must be added to the temperaturederived from the thermocouple output, in order to findthe temperature measured. This is called cold junctioncompensation, and is done automatically by the TT301,which has a temperature sensor at the sensor terminalsfor this purpose. Secondly, if the thermocouple wiresare not used all the way to the terminals of thetransmitter (e.g. copper wire is used from sensor-heador marshalling box) new junctions with additionalSeebeck effects will be created and ruin themeasurement in most cases, since the cold-junctioncompensation will be done in the wrong point.

The relation between the measuring junction tempera-ture and the generated millivoltage is tabulated in ther-mocouple calibration tables for standardized ther-mocouple types, the reference temperature being 0EC.

Standardized thermocouple which are commerciallyused, whose tables are stored in the memory of theTT301, are the following:

# NBS (B, E, J, K, N, R, S, T)# DIN (L, U)

THERMORESISTANCES (RTDs)Resistance Temperature Detectors, most commonlyknown as RTD's, are based on the principle that theresistance of a metal increases as its temperatureincreases.

Standardized RTDs, whose tables are stored in thememory of the TT301, are the following:

# JIS [1604-81] (Pt50 & Pt100)# IEC, DIN, JIS [1604-89] (Pt50, Pt100 & Pt500)# GE (Cu 10)# DIN (Ni 120)

For a correct measurement of RTD temperature, it isnecessary to eliminate the effect of the resistance of thewires connecting the sensor to the measuring circuit. Insome industrial applications, these wires may behundreds of meters long. This is particularly importantat locations where the ambient temperature changes alot.

The TT301 permits a 2-wire connection which maycause measuring errors, depending on the length ofconnection wires and on the temperature to which theyare exposed (see Fig. 2.3).

In a 2-wire connection, the voltage V2 is proportional tothe RTD resistance plus the resistance of the wires.

V2 = [RTD + 2.x R] x I

Fig. 2.3 – Two-Wire Connection

In order to avoid the resistance effect of the connectionwires, it is recommended to use a 3-wire connection(see Fig. 2.4) or a 4-wire connection (see Fig. 2.5).

In a 3-wire connection, terminal 3 is a high impedanceinput. Thus, no current flows through that wire and novoltage drop is caused. The voltage V2-V1 isindependent of the wire resistances since they will becanceled out, and is directly proportional to the RTDresistance alone.

V2-V1 = [RTD + R] x I - R x I = RTD x I

Fig. 2.4 – Tree-Wire Connection

In a 4-wire connection, terminals 2 and 3 are highimpedance inputs. Thus, no current flows through thosewires and no voltage drop is caused. The resistance ofthe other two wires are not interesting since nomeasurement is done on them. Hence the voltage V2is directly proportional to the RTD resistance. (V2 =RTD x I).

Fig. 2.5 – Four-Wire Connection

Operation 2.5

A differential connection is similar to the two-wireconnection and gives the same problem (see Fig. 2.6).Terminal 3 is a high impedance input. Thus, no currentflow through and no voltage drop is caused, but theresistance of the other two wires will be measured anddoes not cancel each other out in a temperaturemeasurement, since linearization will affect themdifferently.

Fig. 2.6 – Differential Connection

THE DISPLAYThe digital indicator is able to display one or twovariables which are user selectable. When twovariables are chosen, the display will alternate betweenthe two with an interval of 3 seconds.

The different fields and status indicators are explainedin Fig. 2.7.

MonitoringDuring normal operation, the TT301 is in the monitoringmode. In this mode, indication alternates between theprimary and secondary variable as configured inDISPLAY. See Fig. 2.8.

Fig. 2.8 – Typical Monitoring Mode Display

The display indicates engineering units, values andparameters simultaneously with most statusindicators. The monitoring mode is interrupted in twosituations:

# user performs complete local adjustment.# an alarm is activated.

Fig. 2.7 - Display


ALARMThe two alarms are software alarms and have nocontacts available on the transmitter. The alarms areacknowledged by using the Local Adjustment or theHand-Held Terminal, which can view and configurealarms as well - see further Section III. During an alarm,the display will indicate which alarm has been activatedand if it has been acknowledged or not.The transmitter display also indicates the alarms statusas shown in Fig. 2.9.

AL H means High Alarm, AL L means Low Alarm andALO indicates Burnout failure. The ACK indicates thatthe alarm has not yet been acknowledged.

When the alarm condition disappears, the "ACK" isswitched off and the display returns to monitoringmode.

For further information on alarm configuration, seeSection III - Programming Using Terminal.

Fig. 2.9 – Typical Alarm Condition Display

Programming Using Terminal 3.1

3 PROGRAMMING USING TERMINAL

THE HAND-HELD TERMINAL

Smar Hand-Held Terminal (HT2) is the human machineinterface used to maximize the advances of digitaltechnology. The terminal's front face is shown on Fig.3.1.

Fig. 3.1 – Smar Hand-Held Terminal

Smar Hand-Held Terminal (HT2) Software has thefollowing features:

# Transmitter identification and specification data.

# Remote reranging.

# Special sensor parameter adjustments.

# Constant current adjustment between 3.9 and 21 mAfor loop test.

# Monitoring of process variable in Engineering Units,% and mA.

# Controller monitoring for Setpoint, Process Variable,Manipulated Variable and Auto/Manual status.

# Controller parameters adjustment.

# Setpoint generator parameters adjustment.

# Diagnosis and determining of faults in the processoror in the transmitter.

The operations which take place between the HT2 andthe transmitter does not interrupt the measurement, and does not disturb the output signal. The HT2 can beconnected on the 4-20 mA line up to 2 km away fromthe transmitter.

Fitting the BatteryThe HT2 uses any 9-Volt PP3 size battery, however forlonger operating life, use of alkaline batteries isrecommended.

Remove the protective case by pulling it firmlydownwards. Pull the tab to remove the battery coverand observe polarity.

WARNING:

Do not remove the battery in Hazardous Areas.

Fitting the DATAPACK and RAMPACK.The datapack is the module where the TT301configuration software for the HT2 is stored. Make sureit is market TT301 and put it into slot B.

Keyboard

The Hand-Held Terminal (HT2) has double functionkeys. The function labels are indicated on the keysthemselves, and above them. The following keys areused for TT301 programming.

Is used to switch the HT2 on or to return tothe last decision level in the menu. The

display will show the menu - the list of built-inapplications available. If you cannot read the display, orif it is difficult to read, you may have to adjust thecontrast. To locate contrast adjustment, see Figure 3.1.

These keys are used to move the cursor.

Is used to access the symbols and numbersabove the keys. Must be pressed

simultaneously with the desired key when the HT2 is inthe alphanumeric mode. To obtain the selection, justpress simultaneously <SHIFT> and the symbol ornumber desired. For data entry that requires onlynumbers, the <SHIFT> key is not necessary.

Is used to delete characters wrongly typed.

Is used to leave a space between characters.

Is used to confirm an action or complete aninput.

Turning the Unit On and OffWhen the HT2 is turned on the first time or with a newbattery, the following message is on the display:

SELECT LANGUAGE

English FrançaisDeutsch

TT301 - Operation and Maintenance Instruction Manual3.2

The cursor is blinking under English, which is the onlylanguage available for the software version 1.00.Press the <EXE> key.

11:23a

Tt301 Off

Moving the cursor to function OFF and pressing the <EXE> key or pressing the Key <O> will turn the unitoff. If the terminal is ON for five minutes without anykeys being pressed, it will switch itself OFF.

With the cursor blinking under TT301, press the <EXE>key. The operational system is transferred from theplug-in EPROM memory (DATAPACK) to the HT2 RAMmemory, and the display will show the followingmessage.

HAND HELD TERMINAL MODEL HT2 Version 1.XX

After a few seconds, the following menu will show thethree configuration options.

SMAR-HT2ON_LINE_SINGLE_UNITON_LINE_MULTIDROP EXIT

Use of <ON/CLEAR> Key or the Function EXITBoth <ON/CLEAR> key and the EXIT function allow theuser to leave the MENU in use and return to the nexthigher MENU in the hierarchy.

The key or the function are also useful for returning toa familiar menu when the user is lost in an unfamiliaroperation.

TERMINAL PROGRAMMING TREEThe Programming tree is a tree-shaped structure witha menu of all the available software resources, asshown in Figure 3.2.

On Line Single Unit is used when the HT2 isconnected in parallel to a single transmitter and thistransmitter has the address 0.

WARNING:

All transmitters are factory configured with no passwords.To avoid operation by nonauthorized persons in somecritical levels of the Programming Tree, it is recommendedto configure all passwords and configuration levels prior tooperation. See "PASSWORD" option in Maintenancesection.

On Line Multidrop is used when the HT2 is connectedin parallel to several transmitters (up to 15) and thesetransmitters are configured with different addresses(see Multidrop).

ON LINE SINGLE UNIT CONFIGURATIONTo configure the transmitter on line, certify that it iscorrectly installed, with a suitable power supply and theminimum 250 Ω load required.

With the cursor blinking under the "On line single unit"option, press the <EXE> key. The display will show:

Searching for XMTR

XMTR = means transmitter

>>>> SMAR TT301 <<<< Output: Temperature XMTR Version 2.XX

The display flashes a message informing that thetransmitter is working as a temperature transmitter(XMTR) and its software version is 2.xx. Immediatelyafter that, the main menu is displayed.

/ (TAG) XMTRINFO CONF MONITTRIM MAINT ALARMEXIT

or

/ (TAG) PIDINFO CONF MONITCNTRL TRIM MAINTALARM EXIT

/ - indicates the main menu options.

X M T R

Indicates that the transmitter works also as atransmitter

or

P I D (Optional)

Indicates that the transmitter works as a controller.

TAG - is the space reserved for the transmitter TAG(8 characters).

INFO - is the option where the main information aboutthe transmitter can be accessed.

CONF - is the option where the output relatedparameters are configured: Lower Value,Upper Value, Unit, Damping, Output Function,Sensor Type, Burnout,XMTR/PID-mode andDisplay.


Fig. 3.2 – Terminal P`rogramming Tree


MONIT - is the option that allows the user to monitor 4of the transmitters dynamic variables andoutput current.

CNTRL - is the option where all control parameters maybe adjusted and monitored.

TRIM - is the option used to match the transmitterindication with an Ohm/mV and/or a currentstandard.

MAINT - is the option used to change Passwords, to establish the password level attributed to eachconfiguration operation and to read theoperation counters.

EXIT - is the option used to go back to the previousmenu. The <ON> key can be used as well.

INFORMATION - INFOIf the INFO option is selected, the display will show:

/INFO (TAG) XMTR Tag: XXXXXXXX

Using the <8888> and <9999> keys all information items canbe accessed. If you intend to change one item, pressthe <EXE> key.

/INFO (TAG) XMTRTag: XXXXXXXXChange it? Y / N

If you press <N>, the display will show the item again.

If you press <Y>, you may select the new content andsend it to the transmitter by pressing the <EXE> key.The following items are available with the respectiveoptions.

TAG - Eight character alphanumeric field foridentification of the transmitter. Remember touse the <SHIFT> key for numbers andsymbols.

DESCRIPTOR - 16-character alphanumeric field foradditional identification of thetransmitter. May be used to identifyservice or location.

DATE MODIFIED - The date may be used to identify arelevant date as the last calibration,the next calibration or the installation.The date is presented in the form ofMonth, Day, Year. Month should beentered as a number 1 -12. Year withall four digits, e.g., 1992.

MESSAGE: 32-character alphanumeric field for anyother information, such as the name ofthe person who made the last calibration,some special care to be taken, etc.

INTEGRAL METER*: Indicates if a display is fitted ornot.

SENSOR TYPE*: Shows sensor type andrespective connection, asselected in CONF.

SENSOR RANGE*: Shows the TT301 range for thisparticular type of sensor.

*NOTE:

These items cannot be changed at this point of themenu. Please refer to configuration.

Fig. 3.3 – Terminal Information Tree

CONFIGURATION - CONFThis function affects the 4-20 mA output of thetransmitter and the transmitter display indication. Herethe transmitter can be reranged, having the dampingadjusted or the burnout mode changed. TheEngineering Units displayed on the transmitter and onthe HT2 can also be changed.

RERANGING THE TT301To rerange a transmitter is to change the input valuesrelated to 4 mA and to 20 mA. There are four ways todo it with the TT301:

1 - Using the HT2 (without reference mode) wherecalibration input is not required.

2 - Using the HT2 with an input signal or calibratoras reference (with reference mode).

3 - Using the local adjustment with input signal asreference (simple mode, XMTR).

4 - Using the local adjustment with input signal asreference (complete mode, with reference).

5 - Using the local adjustment where a calibrationinput is not required (complete mode, withoutreference).

In transmitter mode, the Lower Value alwayscorresponds to 4 mA and the Upper Value to 20 mA. In


PID mode, the Lower Value corresponds to PV=0% andthe Upper Value to PV=100%.

RERANGING WITHOUT REFERENCEThe TT301 may be adjusted to give 4 and 20 mA cor-responding to given temperature values. The TT301has the expected input, from several standard sensorsoutput at different temperatures, programmed in itsmemory. Therefore, the zero and span input does nothave to be generated when the TT301 is reranged, thusthere is no need to connect it to a calibrator forreranging purposes. Suppose that the transmitter iscalibrated from -100 to 300 EC and the range must bechanged to 0 to 100EC. To rerange the transmitter, setthe cursor blinking under CONF by using the <8888> <9999><7777> <6666> keys.

/ (TAG) XMTRINFO CONF MONITTRIM MAINT ALARMEXIT

Press <EXE>.

/CONF (TAG) XMTRLower= -100.00 ºCUpper= 300.00 ºC Unit = ºC

To change the Lower Value, press <EXE>.

/CONF (TAG) XMTR[Lower Range Adjust]Lower= -100.00 ºC Change it? Y / N

If you press <N> (No), you will return to the previousscreen. If you press <Y> (Yes):

/CONF (TAG) XMTR

Control loop shouldbe in MANUAL ! [EXE]

This is a warning message. Be sure that changes in theoutput signal will not disturb plant operation.

Press <EXE> key to proceed.

/CONF (TAG) XMTR

Enter your PasswordPSW = _

If a password was programmed to this operation, youmust enter it (see MAINTENANCE).

After entering the password and pressing the <EXE>key:

/CONF (TAG) XMTR[Lower Range Adjust]WITHOUT REFERENCE WITH REFERENCE

As the cursor is blinking under "WITHOUTREFERENCE", as desired, press <EXE>.

The display will show the range limits, for example, fora IEC Pt100:

/CONF (TAG) XMTRRange Limits: Lo= -200.00 ºC Hi= 850 ºC

and ask for the new Lower Value:

/CONF (TAG) XMTRType Lower RangeLo(C) = _

The new Lower Value can be typed and entered withthe <EXE> key. If the typed value is below the LowerLimit Value or the span narrower than the minimumspan, an alarm message is shown on the display andthe value is not accepted.

As the new Lower Value is 0EC. Type <0> and <EXE>:

/CONF (TAG) XMTR

Loop may be returnedto AUTO ! [EXE]

Press <EXE> to proceed:

/CONF (TAG) XMTRLower= 0.00 ºC Upper= 300.00 ºCUnit = ºC

To change the Upper Value, move the cursor to Upperand press <EXE>.

/CONF (TAG) XMTR[Upper Range Adjust]Upper= 300.00 ºCChange it? Y / N

Press <Y> (Yes). A warning message will be on thedisplay. Press <EXE>.

/CONF (TAG) XMTR[Upper Range Adjust]WITHOUT REFERENCEWITH REFERENCE


The cursor is blinking under "WITHOUT REFERENCE".Press <EXE> key. The display will show the sensorlimits for a while:

/CONF (TAG) XMTRRange Limits:Lo= -200.00 ºC Hi= 850.00 ºC

and then, ask for the change:

/CONF (TAG) XMTRType Upper Range Up(C) =

Type <1> <0> <0> and <EXE>.

The warning message will tell you that the loop may bereturned to AUTO. Press <EXE>.

/CONF (TAG) XMTRLower= 0.00EC Upper= 100.00EC Unit =EC

The transmitter will generate a signal that varies from4-20 mA when the temperature varies from 0 to 100 EC.

Observe that both LOWER and UPPER VALUES arecompletely independent. Adjustment of one does notaffect the other. Although, the following rules must beobserved:

a) Both LOWER and UPPER VALUES should notbe smaller than lower range or greater than highrange.

b) The span, [(UPPER VALUE)-(LOWERVALUE)], should be greater than the MINIMUMSPAN.

If you intend to reverse a signal, i.e., to have theUPPER VALUE smaller than the LOWER VALUE,proceed as follows:

Make the Lower Value as close to the Upper Value aspossible or vice-versa, observing the minimum spanallowed , set the Upper Value to the desired setting andthen, set the Lower Value.

Example: If the transmitter is ranged, so that:

LOWER VALUE / 4 mA = 0ECUPPER VALUE / 20 mA = 100EC

and you want to change the settings to:

LOWER VALUE / 4 mA = 100ECUPPER VALUE / 20 mA =0EC

considering that the Minimum Span IEC Pt100 is 10EC,you must change the settings as follows:

a) Set the LOWER VALUE = 90, i.e. (100-10)b) Set the UPPER VALUE = 0ECc) Set the LOWER VALUE = 100EC

RERANGING WITH REFERENCEThis is almost the conventional way to rerange or tocalibrate a transmitter. Apply the input to which youwant to set the 4 mA/PV=0% point. If, through the HT2,you tell the transmitter that this is the 4 mA/PV=0%point, this input is set as the Lower Value and thespan is maintained.

The same procedure is applied for the Upper Value.

Example: A transmitter with resistance input is ranged,so that:

LOWER VALUE / 0 OhmUPPER VALUE / 100 Ohm

After installation, the potentiometer residual may give areading of, for instance, 5 Ohm when the resistiveposition indicator is at zero.

The zero suppression is easily accomplished with thereranging with reference.

Select CONF and press <EXE>.

/CONF (TAG) XMTRLower= 0.00ohmUpper= 100.00ohmUnit = ohm

As the cursor is blinking under Lower, press <EXE>..

/CONF (TAG) XMTR[Lower Range Adjust]Lower= Change it? Y / N

Press <Y> (Yes).

/CONF (TAG) XMTR

Control loop shouldbe in MANUAL ! [EXE]

Press <EXE>.

/CONF (TAG) XMTR

Enter your PasswordPSW = _

/CONF (TAG) XMTR[Lower Range Adjust]WITHOUT REFERENCEWITH REFERENCE


Fig. 3.4 – Terminal Configuration Tree


Move the cursor to "WITH REFERENCE", since thedesired input is applied, and press <EXE>.

/CONF (TAG) XMTR[Lower Range Adjust]Apply lower rangeand wait few seconds

After a while, waiting for the input to stabilize, thedisplay will show:

/CONF (TAG) XMTR[Lower Range Adjust]Set that referenceas lower range? Y/N

Confirm by pressing <Y>,

/CONF (TAG) XMTR

Loop may be returnedto AUTO ! [EXE]

Press <EXE> to proceed.

/CONF (TAG) XMTRLower= 5.00ohmUpper= 105.00ohmUnit = ohm

Observe that the Upper Value shifted, and the samespan was maintained.

The Lower Value is the transmitter reading of theapplied input.

The Upper Range Value may be changed in the sameway. As mentioned before, the transmitter reading inEngineering Units of the 4-20 mA points may differslightly from your plant standard.

Although the 4-20 mA setpoints will operate properlywithin these applied settings, the transmitter reading, inEngineering Units, may indicate a slightly differentvalue.

The function TRIM-READING can be used to match thetransmitter reading in Engineering Units to your plantstandard, thereby eliminating any eventual differences.

UNITThe Engineering Units of the transmitter display and ofthe HT2 display may be changed when the option"UNIT", of the CONF function, is selected.

The following units are available;

For mV input: always mV

For Ohm input: always ohm

For thermocouple and RTD input:degrees Celsiusdegrees Fahrenheitdegrees RankineKelvins

DAMPINGThe CONF function enables the electronic dampingadjustment.

The damping may be adjusted between 0 and 32 sec.

OUTPUTThe output can be set to any desired value between 3.9and 21 mA regardless of input. This feature is veryuseful for loop test.

To activate one of these options, just move the cursorto OUTPUT and press <EXE> key. The display willshow:

/CONF (TAG) XMTR[ Changing Function]Function = LinearChange it? Y / N

Press <Y> yes.

/CONF (TAG) XMTR

Control loop shouldbe in MANUAL ![EXE]

Press <EXE> key.

/CONF (TAG) XMTR

Enter your passwordPSW = _

If password is configured, enter the password andpress <EXE> key.

/CONF (TAG) XMTRChoose new Function.linear .constEXIT

Move the cursor to "CONST" option and press <EXE>key.

/CONF (TAG) XMTR

Enter current value3.9 =< I(mA) =< 21

/CONF (TAG) XMTR

Enter current valueI(mA) = _


Type the desired current value for example: 12.00 mA.

/CONF (TAG) XMTR

Enter current valueI(mA)= 12.00_

Press <EXE> key.

This options is intentionally volatile, i.e., if thetransmitter is switched off, it will come back withLINEAR output.

BURNOUTThe output may be programmed to go to the maximumlimit, 21.00 mA (UP-SCALE) or to the minimum limit,3.9 mA (DOWN-SCALE), should the transmitter fail,e.g., over range due to open sensor. If the TT301operates as a controller, the safety-out in CNTRLshould be used instead.

DISPLAYThe transmitter display may alternate between two ofthe following indications:

OUT Output in milliamperes *MV% Output in percent PV Process variable in engineering units TAmb. Ambient temperature PV % Process variable in percent *SP% Setpoint in percent *SP Setpoint in engineering units *TIME Time for setpoint generator *ER Error in percent (PV% - SP%)

The indication will always alternate between the Firstand the Second Variable.

* Note:

These display items can only be selected in PID mode.

EXAMPLE:Set the first variable indication to PV%, andthe second to OUT.

/CONF (TAG) XMTR[ Meter Indication ]Disp.= PV TambChange it? y / N

Press <Y> yes.

/CONF (TAG) XMTR

Enter your passwordPSW = _

If a password was programmed to this operation, youmust enter it, and press <EXE> key.

/CONF (TAG) XMTR[ Meter Indication ]First Var. = PV Second Var. = TAmb

Press <EXE> key.

/CONF (TAG) XMTR[ First Variable ]Out PV TambPV% Exit

Move the cursor to PV% and press <EXE> key.

/CONF (TAG) XMTR[ Meter Indication ]First Var. = PV% Second Var. = TAmb

The cursor automatically moves to Second Variable,press <EXE> key.

/CONF (TAG) XMTR[ Second Variable ]Out PV TambPV% Exit

Move the cursor to OUT and press <EXE> key.

/CONF (TAG) XMTRDisp. = PV% OUTSensor = Pt100 I 3WPID Module is OFF

If you do not want the display to alternate indications,select the same indication in both variables, or selectNONE in the second variable.

SENSOR - SensorIs used to configure the TT301 input for the sensor thatis used and the form of connection.

Select SENSOR and the display will show:

/CONF (TAG) XMTR[Sensor Selected] Pt100 I 3 wire Change it? Y / N

Press <N> if you do not want to change or <Y> tochange. The display will show:

/CONF (TAG) XMTR[Choose new Sensor]Rtd Ohm Tc mV

Use the <9999> key to see the last option.


RTD: Resistive Temperature DetectorsCu10 (GE)Ni120 (DIN)Pt50, 100, 500 (IEC) Pt50, 100 (JIS)Configurable for 2, 3, 4 wires or differential

Ohm: Linear Resistance Measurement0 - 100 Ohm0 - 400 Ohm0 - 2000 OhmConfigurable for 2, 3 ,4 wires or differential

TC:ThermocouplesB, E, J, K, N, R, S, T (NBS)L, U (DIN)Configurable for 2 wires or differential

mV: Linear Voltage Measurement-6 - 22 mV-10 - 100 mV-20 - 500 mVConfigurable for 2 wires or differential

Special: Special SensorIs used for special sensors, e.g., load cells orresistive position indicators. It turns theTT301 into a transmitter for mass, volume,position, etc.

Special Sensor ConfigurationSpecial Sensor is a function that allows sensors whosecharacteristics are not stored in the TT301 memory asa standard to be used.

Any sensor may be used, provided that the TT301 canaccept the sensors output. The mV and Ohm limitationscan be seen in table 3.2.

The sensors characteristic can be programmed into theTT301's EEPROM in form of a 16-point table. Suchtables are usually made available by the sensormanufacturer but can also be obtained by testing it.

The special sensor function can not be used at thesame time as the Setpoint generator.To change the special sensor configuration, selectspecial in the sensor menu.

/CONF (TAG) XMTR [ Special Sensor ]Type =Ohm Connection = 3 wires

VARIABLES UNITS

PRESSURE

inH2O, InHg, ftH2O, mmH2O, mmHg,psi, bar, mbar, g/cm2, Pa, KPa, Ton,ATM

VOLUMETRICFLOW

ft3/m, gal/m, I/min, Gal/m, m3/h, gal/s,I/s, MI/d, ft3/s, ft3/d, m3/d, Gal/h, Gal/d,ft3/h, m3/m, bbl/s, bbl/m, bbl/h, bbl/d,gal/h, Gal/s, I/h, gal/d

SPEED ft/s, m/s, m/h

TEMPERATURE oC, oF, oR, K

VOLTAGE mv, v

VOLUME gal, l, Gal, m3, bbl, bush, Yd3, ft3, In3

LEVEL ft, m, in, cm, mm

TIME min, sec, h, dia

MASS gram, Kg, Ton, lb, Shton, LTon

MASS FLOW

g/s, g/min, g/h, kg/s, kg/m, kg/h, kg/d,Ton/m, Ton/h, Ton/d, lb/s, lb/m, lb/h,lb/d, Ton/d

DENSITY

SGU, g/cm3, Kg/m3, g/ml, Kg/l, g/I,TWARD, BRIX, Baum H, Baum L,API, % So/w, % Solv, Ball

MISC. Ohm, Hz, mA, %, pH, Fs, cPo

SPECIAL 5 caracters

TABLE 3.1 - Available Special Sensor Unit

Use the <9999> key to see all options.

TYPE - Sensor TypeOhm - Resistive outputmV - Voltage output

CONNECTION - Sensor Connection2 wires3 wires4 wiresDifferential

LRL - Lower Range LimitThe minimum lower value that should beconfigurable, in reading value, not sensedinput.

URL - Upper Range LimitThe maximum upper value that should beconfigurable, in reading value, not sensedinput.


Min - Minimum SpanThe minimum Span that should be configura-ble,in reading value, not sensed input.

Unit - Engineering Unit that should be associated withthe measured variable.If one of over 100 standard units is selected, itwill automatically get its HART protocol code.This way all supervisory systems supportingHART can access the unit.Should a special unit be necessary, selectSPECIAL in the UNIT menu.

Table (x,y) - Linearization TableTable that relates the measured input toreadingX = sensed input in Ohm or mVY = desired reading

COLD JUNCTION - This Function is used to enable ordisable the cold junctioncompesation for special mVsensor.

EXIT - Exits the special sensor configuration. Amessage will prompt you to turn the specialsensor ON or not.

Special Sensor Special Unit SelectionTo configure a special unit, select SPECIAL in the UNITmenu. The display will show:

/CONF (TAG) XMTR[Choose new unit] Special Unit = undefChange it? Y / N

Press <N> to exit or <Y> to change, the display willshow:

/CONF (TAG) XMTR

Special Unit = _

Enter desired unit, maximum 5 characters. Then pressthe <EXE> key.

Special Sensor TableThis is where the desired reading as a function of thesensor output is tabulated. The sensor output is enteredas the x-value.

The desired reading is entered as y-value with thelimitations: -19999 < = Y < = +19999. Note the followinglimitations for the x-values:

CONN.TYPE

2, 3 or 4WIRE

DIFFERENTIAL(each input)

Ohm 0 to 2000 0 to 1000

V -20 to 500 -10 to 250

Table 3.2 - Special Sensor Input Range

To enter the table, select Table (X, Y).The display will show:

/CONF (TAG) XMTR[Sp. Sensor Table]

NEW EDIT EXIT

- NEW is used to make a new table.- EDIT is used to look at, and change an existing table.- EXIT is used to escape.

Select the desired function and the display will show:

/CONF (TAG) XMTR[Sp. Sensor Table] X1 = -22.00 mVY1 = 0.00 kg

Use the cursor keys <8888> and <9999> to see all the 16 points.To change, press the <EXE> key. When the table iscompleted, select SAVE to download the table to thetransmitter. It is good practice to enter points in the tablebeyond the maximum operation limits (LRL & URL). Choseone point approximately 10% below LRL and another at aminimum of 10% above URL. Should you want to delete apoint, press the <DEL> key.

COLD JUNCTION (Only for Thermocouple Sensor)This function allows to turn the Cold JunctionCompensation, then the cold junction in the XMTR must bedisable.

/CONF (TAG) XMTRDisp. = PV% NoneSensor = J NBS2W Cold Junction isON

To enable or disable the ACold Junction@ move the cursorto ACold Junction@ and press <EXE>. Confirm <Y> tomove the change or <N> to don=t move change.

PID Module (Optional)Here the PID module can be switched on turning theTT301 into a controller, or switched off turning it into atransmitter.

/CONF (TAG) XMTRDisp. = PV% None Sensor = Pt100 I 3WPID Module is OFF

To change mode, move the cursor to "PID Module"andpress <EXE> key. Confirm <Y> to make the change or<N> not to change.

The transmitter 4-20 mA output can be configuredasthe output of a PID controller.Where:

e= PV-SP (direct) or SP-PV (reverse)SP = SetpointPV = Process Variable (pressure, level, flow, etc.)Kp = Proportion gainTr = Integration timeTd = Derivate timeMV = Manipulated Variable (output)


Fig. 3.5 – Terminal Control Tree


Note that the branch CNTRL now appears in the mainmenu, enabling configuration and tuning of the PIDmodule.

MONIT - MonitoringThis function allows simultaneous monitoring of 4 of thetransmitters dynamic variables and output current onthe display of the HT2. To activate it, select MONIT inthe main menu. The display will show:

/MONIT (TAG) PIDOUT 7.722mAPV 23.260 ºCTIME 0.000min

Use the <9999> key to see the fourth variable. To changeany of the variables to another, select it using thecursor keys and then, press <EXE>.

The display will show:

/MONIT (TAG) PID[Dynamic Variable]Primary = PV Change it? Y / N

Press <N> to exit, or <Y> to change.The display will show:

/MONIT (TAG) PID[Primary Variable]MV PV TambPV% SP% SP

Use the <9999> key to see all options.

OUT - Shows output in mA.MV - Shows output in %.PV - Shows Process Variable in the selected

engineering unit.TAmb - Shows ambient temperature in deg C.PV% - Shows Process Variable in %.SP% - Shows Setpoint in %.SP - Shows Setpoint in the selected engineering

unit.TIME - Shows the Setpoint generator time in min.ER% - Shows deviation between SP% and PV%.

CNTRL - CONTROL (Optional)This branch can only be accessed when the PIDmodule is ON. To activate the PID module see CONF. When the PID module is on, the main menu shows:

/ (TAG) PID INFO CONF MONITCNTRL TRIM MAINTALARM EXIT

Select control configuration by moving the cursor toCNTRL.Press <EXE> key, the display will show:

/CNTR (TAG) PIDINDIC. SAF_LIMITTUNING OP_MODESP.TABLE EXIT

Operation Mode - OP_MODE

The "Op. mode" options:

/CNTR (TAG) PID

Out Action REVERSE SP_Tracking is OFF

By pressing the <9999> key, the display will show the otheroptions:

/CNTR (TAG) PID

Power_ON is MANUAL SP Generator is OFF

Direct - Output increases when PV increases.

Reverse - Output decreases when PV increases.

SP tracking - When in MANUAL, the Setpoint followsthe PV. When the controller is switched to AUTO, thelast PV value, before the switching will be assumed asSP.

Power ON - When the PID is ON, sets the mode, inwhich the controller will return after a power failure:. Last (mode prior to failure);. Automatic;. Manual.

SP-Generator - If it is ON, the Setpoint willautomatically change according to a table (recipe)programmed in SP.TABLE. If it is OFF, the user has toconfigure a Setpoint. The Setpoint generator andspecial sensor can not be used at the same time.

INDIC - IndicationThe Setpoint, the Auto/Manual mode and the Outputmanual adjustment are achieved by "INDIC" option, thatstands for indication.

Press <EXE> when the cursor is blinking under"INDIC".

/CNTR (TAG) PIDTi: 1440 SPG: runSP:51.71% PV: 37.82%MANUAL MV: 20.00%

Note that Ti and SPG are only displayed if the SetpointGenerator is ON.


In order to make any change in the SP, MV, Ti or theoperating status, just move the cursor to the desireditem and press <EXE>. E.g., for MV, the display willshow:

/CNTR (TAG) PID

Output = 20.00Change it ? Y / N

Type <Y>, enter the desired new output value(remember that the control must be in MANUAL) andpress <EXE>.The output will ramp up or down to thenew value. The ramp adjustment is done at "SAF_LIMIT- OUT.CHG/S".

Note that when the Setpoint is changed, it is only thecurrent operating Setpoint that is changed. After apower-off it will be lost unless you , at the prompt"SAVE Y/N", confirm <Y>. This stores the new setpointin a non-volatile memory. This is done to reduce thenumber of changes operated in a certain memoryposition of the EEPROM. The maximum number ofchanges is somewhere above 10.000.

TUNINGSelect the option TUNING and press <EXE>. Thedisplay will show:

/CNTR (TAG) PIDKp = 1.00 Tr = 0.10min/repTd = 0.00sec

Move the cursor to the desired parameter and make thenecessary changes.

The Proportional Action is gain, not proportional band.Range 0-100.

The Integral Action is minutes per repetition. Range 0-999.

The Derivative constant is in seconds. Range 0-999.The derivative gain is fixed in 0.1.

The integral and derivative actions can be canceled bysetting Tr and Td equals to 0.

SAF. LIMITS - Control LimitsThis option enables the adjustment of the followingparameters of the controller:

Safety out - Is the output after a power interruption orduring a failure.

Out Chg/s - Is the maximum allowable rate-of-changeof the output.

Low Limit - Is the minimum allowable output (in %).

High Limit - Is the maximum allowable output (in %).

SP-TABLE - Setpoint tableWhen the Setpoint generator is on, it will change theSetpoint automatically according to a table (recipe). Toconfigure this table select SP-TABLE in the menu. Thedisplay will show:

/CNTR (TAG) PID[Set Point Table]

NEW EDIT EXIT

- NEW is used to make a new table.- EDIT is used to look at, and make changes in an existing table.- EXIT is used to escape.

Select the desired function and the display will show,e.g.:

/CNTR (TAG) PID[Set Point Table]TI1 = 6.00minSP1 = 75.00%

Note that the time is always in minutes and the Setpoint in %.

Use the cursor keys <9999> and <8888> to see all 16 points.To change, press the <EXE> key. When the table iscompleted, select SAVE to download the table to thetransmitter.

TRIMThe TRIM function is used to make the reading complywith the user's resistance, voltage or current standards.

To proceed with the TRIM adjustment, the Control Loopshould be in MANUAL to avoid bumps to theprocess.

When the function TRIM is selected, the display willshow:

/TRIM (TAG) XMTR

CURRENT READING EXIT

There are two options:

Output current and Input reading.

Current TRIM (4-20 mA Output)When the microprocessor generates a 0% signal, theDigital to Analog Converter and associated electronicsare supposed to deliver a 4 mA output. If the signal is100%, the output should be 20 mA.


Fig. 3.6 – Terminal Trim Tree

There may be differences between the factory currentstandard and your plant current standard. In this case,you may use the current TRIM adjustment as follows:

When TRIM is performed, the reference should beconnected direct to terminals 2 and 3 with shortestpossible wires. The transmitter should be configured for2-wire sensor connection.

# Select the CURRENT option. The display will show:

/TRIM (TAG) XMTR

4mA 20mA EXIT

# Select which point should be calibrated, for example4 mA). The display will show:

/TRIM (TAG) XMTR[ 4mA Current Trim ]Insert multimeter on line / test point

# Make sure the multimeter is properly installed. Itshould have an accuracy better than 0.02%.

After a while:

/TRIM (TAG) XMTR[ 4mA Current Trim ]Is the line current4.00 mA Y / N

If the reading is 4.00 mA, answer Yes <Y>.If the reading is, for example, 4.012 mA, press <N>(No).

/TRIM (TAG) XMTR[ 4mA Current Trim ]Enter line currentI (mA) = _

Type 4.012 and <EXE>.

The display will repeat the question if the current iscorrect or not. Answer it properly until the reading is4.00 mA. The same procedure shall be applied for the20 mA.

Reading TRIM (Input)There may be differences between the factorystandards for resistance and mV and your plantstandards. In this case, you may use the READING trim adjustment. The reading trim adjustment iscomposed of ZERO, GAIN and FACTORY options. TheZERO and GAIN trim should be done at the LOWERand UPPER RANGE VALUE respectively.

ZERO - allows matching the value of resistance or mVat lower range value. The ZERO trim adjustmentdoesn=t interfere in the GAIN trim. GAIN - allowsmatching the value of resistance or mV at upper rangevalue. FACTORY - recovers the ZERO and GAINfactory trim.

To proceed with zero trim, connect a resistance or mVstandard with accuracy better than 0.02%. SelectREADING, followed and the display will show:

/TRIM (TAG) XMTR [Zero Trim] Input is 138.48 OhmsIs it correct Y/N


Fig. 3.7 – Terminal Maintenance Tree

Suppose the correct input is 138.5 Ohm, then thereading is wrong. To change it, press <N> and thedisplay will show:

/TRIM (TAG) XMTR[ Zero Trim ]

(Ohms)=-

Enter <1>, <3>, <8>, <.>, <5> and then, press the

<EXE> key. The transmitter is now calibrated to thenew reference.

To proceed with gain trim, connect a resistance or mVstandard with accuracy better than 0.02%. SelectREADING followed GAIN and the display will show:

/TRIM (TAG) XMTR [Gain Trim] Input is 264,3 OhmsIs it correct Y/N

Suppose the correct input is 264,11 Ohm, then thereading is wrong.To change it, press <N> and thedisplay will show:

/TRIM (TAG) XMTR [Gain Trim] (Ohms)=-

Enter <2>, <6>, <4>, <.>, <1>, <1> and then, press

the <EXE> key. The transmitter is now calibrated to thenew reference. Should you ever want to recall theoriginal factory calibration trim, select FACTORY.

MAINTENANCE - MAINTThis function allows the change of the passwords andthe reading of the OPERATION COUNTER.

FORMATFORMAT/CODE # shows the "Ordering Code"according to the specification of the customer.

EXAMPLE:

TT301 1 1 - 1 0 - 0

TT301 Temperature Transmitter; with Digital Indicator(1); with Carbon Steel Bracket (1); with Local Adjust (1);1/2" NPT Electrical Connection (O); without otherSpecial Features (O).

SERIAL NUMBERThree serial numbers are stored. The first is the DeviceID. This number is unique to every circuit and can notbe changed.

Sensor serial number. The serial number of the sensorconnected to the TT301 or the sensor that it wascalibrated for, may be entered here.The format item also allows storage of the assemblyserial number in the main board.

Note that the assembly serial number is written on theidentification plate. For each transmitter, this numbercan be changed, if necessary.

CHANGE COUNTER - OP_COUNTEvery time a change is made, there is an increment inthe respective change counter.

The monitored items are:

- LRV/URV (Any Change in range).


Fig. 3.8 – Terminal Alarm Tree

- FIXED (Any activation of the loop test fixed current).

- Trim_4mA (Any trim in 4 mA).

- Trim_20mA (Any trim in 20 mA).

- Trim Reading (Any change in location or data).

- BOUT (Any change UP to DOWN scale or DOWN toUP scale).

- SENSOR.

- OP-MODE (Any change XMTR to PID or PID toXMTR).

- Local Adjustment Protection (Any change inWR_PROT).

- Communication Protection (Any change inWR_PROT).

- Multidrop.

- PASSWORD (Any change of PASSWORD orCONF_LEVEL).

PASSWORDSThere are three levels of passwords. They are used torestrict access to certain operations in theprogramming.

The branches for which passwords can be configuredfor, are:

MONITINFOCONFCNTRLTRIMMAINTLOAD98ALARM

At the default condition no passwords are required.

Each operation branch may have a password levelassigned. For example, the default password level is 0but you can set, for example, INFO with level 1 andMAINT with level 3. These levels can be changed atCONFIGURATION LEVEL (see below).

At PASSWORD you can assign passwords to the levels1, 2 and 3. These password can be changed by anyonethat knows password level 3. In order to cancel apassword, type six times SPACE.

Password Level 3 is hierarchically superior to passwordlevel 2, which is superior to level 1.

ATTENTION:

In case of loss or forgetfulness of passwords, contactSmar Service.

CONFIGURATION LEVELThis function allows the user to modify the defaultpassword level for each type of operation. Thisconfiguration is stored in the TT301 EEPROM.

WR-PROT - WRITE PROTECTThis command is used to protect the transmitterconfiguration. All data except Message, Tag, Descriptorand Date are Write protected.

Write protection can be done for the communicationand/or the local adjustment.

ALARM - ALARMThis function affects the dual alarm. The actions andtrip levels can be configured independently for alarm 1and 2. It also allows monitoring of alarm status andacknowledgement of alarms. Alarm 0 indicates nonconfigurable alarms such as burnout.

When the ALARM function is selected, the display willshow:

/ALARM (TAG) XMTRAL0: OFF AL1: OFF AL2: OFF

To enable, e.g., Alarm 1, make sure the cursor isblinking under "AL1" and then, press the <EXE> key.The display will show:

/ALARM (TAG) XMTR

Ack Action LevelExit


Acknowledge - Acknowledges an alarm, this will turnoff the "ACK" on the transmitterdisplay indicating that the alarm hasbeen noted.

Action - Configures the operation mode of the alarm:off, low or high.

Limits - Configures the level at which the alarm willtrip.

Configuring AlarmsPut the cursor blinking under "Action" and press the<EXE> key. The display will show:

/ALARM (TAG) XMTR

Low High Off

Low - The alarm is activated when PV is below thetrip level - decreasing signal.

High - The alarm is activated when PV is above thetrip level - increasing signal.

Off - The alarm is disabled.

Select the desired option and press <EXE> key.

To configure the trip level, put cursor under the "Level"option in the menu and press the <EXE> key. Thedisplay will show:

/ALARM (TAG) XMTR

Enter New Limit (%)0<= Limit =<100%

/ALARM (TAG) XMTR

Enter New Limit (%)AL1: _

e.g., if 75% is desired, key-in <7>, <5> followed by<EXE> key.

ACKNOWLEDGING ALARMSIf the alarms are enabled and an alarm conditionappears, the display will show, e.g.:

/ALARM (TAG) XMTRAL0: NO ALARM AL1: >75.00% ACKAL2: NO ALARM

Indicating that alarm 1 is on, since PV is larger than75%, which in this case is the limit. The "NACK"indicates that the alarm is not yet acknowledged. Toacknowledge, choose consecutively "AL1" followed by"Acknowledge" from the menus and the display willshow:

/ALARM (TAG) XMTR

Acknowledging AL1

/ALARM (TAG) XMTRAL0: NO ALARM AL1: >75.00% ACKAL2: NO ALARM

"ACK" indicates that alarm now is acknowledged.

ON-LINE MULTIDROP OPERATIONMultidrop connection is formed by several transmittersconnected a single communication transmission line.Communication between the host and the transmitterstakes place digitally with the transmitters analog outputdesactivated (XMTR mode), or with the analog outputactivated (PID mode).

The communication with the transmitters and the host(HT2, DCS, Data Acquisition System or PC) can bedone with a Bell 202 Modem using Hart Protocol. Eachtransmitter is identified by a unique address from 1 to15.

The TT301 is factory set to address 0, that means anon multidrop operation mode, allowing transmitter tocommunicate with the Hand-Held Terminal,superimposing the communication on the 4-20 mAsignal. To operate in multidrop mode, the transmitteraddress must be changed to a number from 1 to 15.This change deactivates the 4-20 mA analog output sending it to 4 mA (XMTR mode), or keeps the 4-20mA operation when the transmitter is configured forPID operating mode.

When intrinsic safety is a requirement, special attentionmust be paid to the entity parameters allowed to thatarea:

Where:

Ca, La - Allowable Capacitance and Inductance

Cij, Lij - Non protected internal Capacitance/Induc-tance of transmitter j (j = up to 15)

Cc, Lc - Cable capacitance and Inductance

Voc - Barrier open circuit voltage

Isc - Barrier short circuit current

Vmaxj - Maximum allowable voltage to be applied tothe instrument j

Imaxj - Maximum allowable current to be applied tothe instrument j

To operate in multidrop mode, it is necessary to see

∑=

+≥n

jj CcCjCa

1

∑=

+≥n

jj LcLiLa

1

[ ]joc VV maxmin≤

[ ]jsc axI Immin≤


which transmitters are connected on the same line.This operation is called polling, and it is done auto-matically as soon as ON-LINE-MULTIDROP option isexecuted.

WARMING:

The current output will be send to 4 mA as soon asthe transmitter address is changed (it does not occurwhen the transmitter is configured for PID OperationMode).

CONFIGURATION THE TT301 FOR MULTI-DROPFirst, connect the transmitter that shall be reconfiguredfor multidrop operation to the HT2, only one transmitterat the time.

A few seconds after selecting "TT301" from the menuthe following menu will be displayed:

SMAR-HT2ON_LINE_SINGLE_UNITON_LINE_MULTIDROPEXIT

With the cursor blinking under the "ON_LINEMULTIDROP" option, press the <EXE> key. The displaywill show:

MDROP

Polling Address X

Fig. 3.9 – On-Line Multidrop Option

The HT2 now searches all addresses and after a fewseconds, the display will show:

MDROP

AD_0

AD_0, this is the address of the only transmitter on theline. If there were more, they would be listed as well,select it by pressing the <EXE> key. The display willshow:

MDROP

Present Address = 0Change it Y / N

If the <N> key is pressed, configuration will continueas in "ON_LINE_SINGLE_UNIT" and the address willremain 0. To change the address, press the <Y> key.The display will show:

MDROPChoose New AddressAD_1 AD_2 AD_3AD_4 AD_5 AD_6

These are the available "free" addresses, more can beviewed using the cursor keys. Select the desiredaddress and press the <EXE> key. The transmitter willnow have that address. Configuration continues with anew search for transmitters on the line, and you willnote that the transmitters address has been changed.

Now the transmitter is ready to be connected to amultidrop line. Note that no other transmitters on thesame line - regardless of make, model and type -should have the same address.

CONFIGURATION IN MULTIDROP MODEIn order to talk to a specific transmitter in multidropmode using the HT2, select "ON_LINE_MULTIDROP".After the HT2 has identified the transmitters on the lineselect the desired transmitter's address from the menu. When prompted "Present address..." "...Changeit Y/N", press <N>. and <EXE> key to proceed. Thedisplay will briefly show:

>>>> SMAR LD301 <<<<

Pressure XMTR version 2.XX

After this, the same menu as seen when in theON_LINE_SINGLE_UNIT mode is displayed.

Configuration can now be done in the same way as fora single unit.

Programming Using Local Adjustment 4.1

4 PROGRAMMING USING LOCAL ADJUSTMENT

THE MAGNETIC TOOL

Smar's magnetic tool is the second man-machineinterface, it compromises the advantage of the powerfulHT2 and the convenience of the "good-old" screwdriver.

If the transmitter is fitted with a display, and isconfigured for complete - local - adjustment (usinginternal jumper) the magnetic tool is almost as powerfulas the HT2, eliminating the need for a HT2 in mostbasic applications.

If the transmitter is not fitted with a display, or isconfigured for simple - local - adjustment (using internaljumper) the adjustment capability is reduced toreranging.

To select the function mode of the magnetic switchesconfigure the jumpers located at the top of the maincircuit board as indicated below:

Local Adjustment Disabled

Local Adjustment Disabled

Simple Local Adjustment Enabled

Complete Local Adjustment Enabled

Fig. 4.1 – Local Adjustment Switches

The transmitter has, under the identification plate, holesfor two magnetic switches activated by the magnetictool.

The holes are marked with Z (Zero) and S (Span). If"Simple Local Adjustment" is selected by the jumpersposition, the switches have the following functions:

Transmitter mode:

Z - It is used to select the Lower Range Value. S - It is used to select the Upper Range Value.

They work exactly as the adjustment with reference ofthe HT2 controller mode for transmitters with digitaldisplay.

Controller mode:

Z - Moves the options (OPERATION and BATCH). S - Activates the selected function.

If "Complete Local Adjustment" is selected by thejumpers position, the switches have the followingfunctions:

Z - Moves the options. S - Activates the selected function.

RERANGING USING THE LOCAL ZERO AND SPANADJUSTMENTS IN SIMPLE MODE

It is possible to rerange the transmitter with the localadjustment switches located on the top of the electronichousing. The switches work like the adjustment "withreference" for the HT2.

In order to make these adjustment, the instrument mustbe configured as "transmitter" (XMTR).

To adjust the zero of the transmitter, proceed asfollows:

# Apply the Lower Value, signal.# Wait for the process to stabilize.# Insert the magnetic tool in the ZERO adjustment

hole. (see Fig. 4.2)

Fig. 4.2 – Local Zero and Span Adjustment


Fig. 4.3 - Local Adjustment Programming Tree – Main Menu

# Wait 2s. The transmitter should be reading 4 mA.# Remove the tool.

As the reranging with reference, the span is maintained.In case you want to change the span, proceed asfollows:

# Apply the Upper Value, signal.# Wait for the process to stabilize.# Insert the magnetic tool in the SPAN adjustment

hole.# Remove the tool.

Note that when zero adjustment is done, the URV cannot be pushed above the URL. In this case, span is notmaintained.

COMPLETE LOCAL ADJUSTMENT

LOCAL PROGRAMMING TREEThe programming tree is a tree-shaped structure with amenu of all available software resources, as shown inFigure 4.3.

The Local Programming mode is entered by activatingswitch (Z). In transmitter mode, only the configurationbranch of the tree is applicable, thus the first menufunction will be UNIT.

WARNING:

When programming using local adjustment, the transmitterwill not prompt "Control loop should be in manual!" as itdoes when programming using the HT2. Therefore it is agood idea, prior to configuration, to switch the loop tomanual. And do not forget to return to auto afterconfiguration is completed

OPER-(OPERATION) Is the option where the operationrelated parameters of thecontroller are configured: Auto/Manual, Setpoint, Manual output.

BATCH Is the option where the Setpoint generatorrelated functions are operated: on/off, Pause,Reset and time adjustment.

TUNE-(TUNING) Is the option where the PID-Algorithmrelated parameters are configured:Action, Kp, Tr, and Td.

CONF-(CONFIGURATION) Is the option where theoutput and display rela-ted parameters are con-figured: unit, primary andsecondary display, Lowerand Upper Value, dam-ping, sensor type andoperation mode.

ESC-(ESCAPE) Is the option used to go back tonormal monitoring mode.


OPERATION [OPER]

Fig. 4.4 – Local Adjustment Operation Tree

Z: Moves to the next branch(BATCH).

S: Enters the OPERATIONbranch, starting with functionAUTO/MANUAL.

Auto/Manual (A/M)

Z: Moves to the SETPOINTINCREASE function.

S: Toggles controller status,Automatic to Manual or Manual toAutomatic. A and M indicatesstatus.

Setpoint Adjustment (SP)

Z: Moves to the SETPOINTDECREASE function.

S: Increases the setpoint until themagnetic tool is removed or100% is reached.

Z: Moves to the MANIPULATEDVARIABLE ADJUSTMENT func-tion.

S: Decreases the setpoint untilthe magnetic tool is removed or0% is reached.

Manipulated Variable Adjustment (MV)

Z: Moves to the MANIPULATEDVARIABLE DECREASE func-tion.

S: Increases the control outputuntil the magnetic tool is removedor the upper output limit isreached.

Z: Moves to the ACK function.

S: Decreases the control outputuntil the magnetic tool is removedor the lower output limit isreached.

Acknowledge (ACK)

Z: Moves the SAVE function.

S: Acknowledges all alarms.

Save (SAVE)

Z: Moves to ESCAPE of theoperation menu.

S: Saves the setpoint and manualoutput values in the transmitterEEPROM, for use after power-on.

Escape (ESC)

Z: Moves to the AUTO/ MANUALfunction.

S: Escapes to the MAIN menu.


BATCH [BATCH]

Fig. 4.5 – Local Adjustment Batch Tree

Z: Moves to the TUNING branch.

S: Enters the BATCH branch,starting with function SPGENon/off.

Setpoint Generator On/Off (SPGEN)

Z: Moves to the SPGEN Pause/Run function.

S: Toggles setpoint generator.On to Off or Off to On.

Setpoint Generator Pause/Run (SPGEN)

Z: Moves to the RESET function.

S: Toggles setpoint generatormode, pause to run or run topause.

Reset (RESET)

Z: Moves to the TIME INCREASEfunction.

S: Resets the time register of thesetpoint generator to 0.

Time (TIME)

Z: Moves to the time decreasefunction.

S: Increases the time register forthe setpoint generator until themagnetic tool is removed or19999 min. is reached.

Z: Selects ESCAPE of theBATCH menu.

S: Decreases the time register forthe setpoint generator until themagnetic tool is removed or thetime-base register is zero.

Escape (ESC)

Z: Moves to the SPGEN on/offfunction.



TUNING [TUNE]

Fig. 4.6 – Local Adjustment Tuning Tree

Z: Moves to the CONFIGURA-TION branch.

S: Enters the TUNING branch,starting with function KP-ADJUSTMENT.

Kp - Adjust (KP)

Z: Moves to the proportional gaindecrease function.

S: Increases the proportional gainuntil the magnetic tool is removedor 100 is reached.

Z: Moves to the TR_ADJUST-MENT function.

S: Decreases the proportionalgain until the magnetic tool isremoved or 0.0 is reached.

Tr - Adjust (TR)

Z: Moves to the integral timedecrease function.

S: Increases the integral timeuntil the magnetic tool is removedor 999 minutes are reached.

Z: Moves to the TD_ADJUSTfunction.

S: Decreases the integral timeuntil the magnetic tool is removedor 0 minute is reached.

Td - Adjust (TD)

Z: Moves to the derivative timedecrease function.

S: Increases the derivative timeuntil the magnetic tool is removedor 999 seconds are reached.

Z: Moves to the ACTION function.

S: Decreases the derivative timeuntil the magnetic tool is removedor 0 second is reached.

Action (ACT)

Z: Moves to the SAVE function.

S: Toggles the action direct toreverse or reverse to direct.The far-right character of theunit/function-field indicates thepresent mode:D = direct actionR = reverse action

Save (SAVE)

Z: Moves to the ESCAPE toTUNING menu.

S: Saves the KP, TR and TDconstants in the transmitterEEPROM.

Escape (ESC)

Z: Moves to the KP-ADJUST-MENT function.



Fig. 4.7 – Local Adjustment Configuration Tree


CONFIGURATION [CONF]

Z: Selects ESCAPE of themonitoring mode.

S: Enters the CONFIGURATIONbranch, starting with functionUNIT.

Unit (UNIT)

Z: Moves to the DISPLAY-1function.

S: Starts selection of engineeringunit for process variable andsetpoint indication. Afteractivating (S), you can movearound the options available inthe table below by activating (Z).

DISPLAY DESCRIPTION

C Degree Celsius

F Degree Fahrenheit

R Degree Rankine

K Kelvin

mV millivolt

Ohm Ohm

SPEC Special Unit

NO No Unit

ESC -escape-

The desired unit is activated by using (S). Escapeleaves unit unchanged.

NOTE

See special sensor in Section 3 for more information on“special-unit”

Display 1 (LCD_1)

Z: Moves to the DISPLAY-2function.

S: Starts selection of variable tobe indicated as primary display.After activating (S), you can movearound the options available inthe following table by activating(Z).

DISPLAYd1-

DESCRIPTION

SP% Setpoint (%)

PV% Process Variable (%)

MV% Output (%)

ER% Error (%)

9 Nothing

TI SP generator time

CU Output (mA)

PV Process Variable (eng. unit)

SP Setpoint (eng. unit)

ESC -escape-

The desired variable is activated using (A). Escapeleaves primary variable unchanged.

NOTE

In TRANSMITTER mode, only PV%, CU, PV and "none" areselectable.

Display 2 (LCD_2)

Z: Moves to the ZERO ADJUSTfunction.

S: Starts selection of variable tobe indicated as secondarydisplay.

The procedure for selection is thesame as for DISPLAY_1, above.

Lower Range Value Adjustment without Reference(LRV)

Z: Moves to the LRV decreasefunction.

S: Increases the Lower Valueuntil the magnetic tool is removedor the maximum for the LowerValue is reached.

Z: Moves to the URV ADJUST-MENT function.

S: Decreases the Lower Valueuntil the magnetic tool is removedor the minimum for the LowerValue is reached.


Upper Range Value Adjust without Reference (URV)

Z: Moves to the URV decreasefunction.

S: Increases the Upper Valueuntil the magnetic tool is removedor the maximum for the UpperValue is reached.

Z: Moves to the ZERO AD-JUSTMENT function.

S: Decreases the Upper Valueuntil the magnetic tool is removedor the minimum for the UpperValue is reached.

Reranging using the LRV and URV items in the menuis the same as the keyboard rerange on the HT2. Noinput has to be applied, the range is set independent ofapplied input. Adjust the value indicated on the displayto the desired range value. Changing one does notaffect the other.

Zero Adjust with Reference (ZERO)

Z: Moves to the ZERO decreasefunction.

S: Decreases the Lower Value(Increases output) until themagnetic tool is removed or theminimum for the Lower Value isreached.

Z: Moves to the SPAN ADJUSTfunction.

S: Increases the Lower Value(Decreases Output) until themagnetic tool is removed or themaximum for the Lower Value isreached.

Span Adjust with Reference (SPAN)

Z: Moves to the SPAN decreasefunction.

S: Decreases the Upper Value(Increases Output) until themagnetic tool is removed or theminimum for the Upper Value isreached.

Z: Moves to the SENSORfunction.

S: Increases the Upper Value(Decreases output) until themagnetic tool is removed or themaximum for the Upper Value isreached.

Reranging using the ZERO and SPAN items in themenu is equivalent to the applied rerange on the HT2.The range values are adjusted relative to the appliedinput. The value in the display is the appliedtemperature in percentage of the range. Changing thelower value shifts the upper value too, maintaining thespan. Changing the upper value does not affect thelower value. For example, if you want 4 mA (0%) for theapplied input, adjust until the display reads 0%.Likewise, if you want 20% (7.2 mA), adjust until thedisplay shows 20%.

Sensor (SENS)

Z: Moves to the OPERATIONMODE function.

S: This function is protected by a"password", when promptedPSWD activate (S) 2 times toproceed with sensor selection.

After activating (S), you can move around the optionsavailable in the following table by activating (Z).

SENSOR SELECTION TABLE

DISPLAY DESCRIPTION

mV-1 -6 to 22 mV

mV-2 -10 to 100 mV

mV-3 -20 to 500 mV

Ohm-1 0 to 100 Ohm

Ohm-2 0 to 400 Ohm

Ohm-3 0 to 2000 Ohm

RTD RTD

TC Thermocouple

SPEC Special Sensor

ESC - escape -


For all sensors, further selections must be done todetermine the specific type and connection. Movearound the available options - listed in the tables below- using (Z).

RTD SELECTION TABLE

DISPLAY DESCRIPTION

Cu-10 Cu10

Ni 120 Ni 120

IE50 IEC Pt50

IE100 IEC Pt100

JI 50 JIS Pt50

JI 100 JIS Pt100

IE500 IEC Pt500

ESC - escape -

OHMS & RTD CONNECTION

DISPLAY DESCRIPTION

2 WIRE 2 - wire

3 WIRE 3 – wire

4 WIRE 4 – wire

DIFF Differential

ESC - escape -

THERMOCOUPLE - TYPE

DISPLAY DESCRIPTION

B_NBS NBS type B

E_NBS NBS type E

J_NBS NBS type J

K_NBS NBS type K

N_NBS NBS type N

R_NBS NBS type R

S_NBS NBS type S

T_NBS NBS type T

L_DIN DIN type L

U_DIN DIN type U

ESC - escape -

Operation Mode (MODE)

Z: Moves to the SAVE function.

S: This function is protected by a"password", when promptedPSWD activate (S) 2 times toproceed.

After entering the "password", you can move around theoptions listed in the table below using (Z). In order toselect the desired option, activate (S).

OPERATION MODE

DISPLAY DESCRIPTION

XMTR Transmitter

CNTRL Controller (Optional)

Save (SAVE)

Z: Selects ESCAPE to CONFIGURATION mode.

S: Saves lower value and uppervalue.

Escape (ESC)

Z: Moves to the UNIT function.


ESCAPE [ESC]

Z: Selects OPERATION branch.

S: Escapes to MONITOR mode.

Maintenance Procedures 5.1

5 MAINTENANCE PROCEDURES

GENERAL

SMAR TT301 intelligent temperature transmitters areextensively tested and inspected before delivery to theend user. Nevertheless, during their design anddevelopment, consideration was given to the possibilityof repairs by the end user, if necessary.

In general, it is recommended that the end user do nottry to repair printed circuit boards. Instead he shouldhave spare circuit boards, which may be ordered fromSMAR whenever necessary.

DIAGNOSIS WITH SMAR HAND-HELD TERMINAL

Should any problem be noticed related to the transmitter's output, investigation may be carried out bythe HT2, as long as power is supplied andcommunication and the processing unit are operatingnormally.

The programmer should be connected to the transmitterin accordance with the wiring diagram shown on

Section 1, Figures 1.4, 1.5 and 1.8.

ERROR MESSAGES

When communicating using the HT2 the user will beinformed about any problem found by the transmittersself diagnostics.

As an example, the HT2 display may show:

> OUTPUT SATURATED <

The messages are always alternated with theinformation on the top line. The table below lists theerror messages. Refer to trouble shooting for moredetails on corrective action.

DIAGNOSTICS WITH THE HT2

DIAGNOSTIC MESSAGES POTENTIAL SOURCE OF PROBLEM

PARITY ERROR • Excessive noise or ripple.

OVERRUN ERROR • Excessive noise or ripple.

CHECK SUM ERROR • Excessive noise or ripple.

FRAMING ERROR • Excessive noise or ripple.

NO RESPONSE

• The line resistance is not in accordance with load curve.• Transmitter not powered.• Interface not connected.• Transmitter configured in Multidrop mode being accessed by ON LINE SINGLE UNIT.• Transmitter reversely powered (polarity is reversed).• Interface damaged.• Power supply or battery voltage of the HT2 lower than 9 V.

LINE BUSY C Other device using the line.

CMD NOT IMPLEMENTED• Software version not compatible between HT2 and transmitter.

• HT2 is trying to carry out a TT301 specific command in a transmitter from another manufacturer.

TRANSMITTER BUSY • Transmitter carrying out on important task. e.g., Local Adjustment.

COLD START • Start-up or Reset due to power supply failure.

OUTPUT FIXED• Output in Constant Mode.• Transmitter in Multi-drop mode.

OUTPUT SATURATED • Primary variable out of calibrated Span (Output current in 3.90 or 21.00 mA, XMTR mode only).

SV OUT OF LIMITS• Temperature out of operating limits.• Temperature sensor damaged.

PV OUT OF LIMITS

• Input signal out of operating limits. • Sensor damaged.• Transmitter with false configuration.• PV out of range limits (see table).


TROUBLESHOOTING WITH TRANSMITTER

# Symptom : NO LINE CURRENT

Probable Source of Trouble:

# Transmitter Connections

C Check wiring polarity and continuity.C Check for shorts or ground loops.

# Power Supply

C Check power supply output. The voltage at the TT301terminals must be between 12 and 45 Vdc, and theripple less than 0.4V.

# Electronic Circuit Failure

C Check the main board for defect by replacing it witha spare one.

Symptom : NO COMMUNICATION


# Terminal Connections

C Check terminal interface connections.C Check if the interface is connected to the points

[COMM] and [-] or in the line between the transmitterand the load resistor.C Check if the interface is model IF2 (for HART

Protocol).


C Check if connections are as per wiring diagram.C Check line resistance; it must be equal to or greater

than 250 Ohm, between the transmitter and thepower supply.

# Power Supply

C Check output of power supply. The voltage at theTT301 terminals must be between 12 and 45V, andripple less than 0.4V.


C Locate the failure by alternately replacing thetransmitter circuit and the interface with spare parts.

# Transmitter Address

C In On Line Multidrop item check if the address is "0".

Symptom : CURRENT OF 21.0 mA OR 3.9 mA


# Transmitter Connection

C Check if the sensor is correctly connected to theTT301 terminal block.C Check if the sensor signal is reaching the TT301

terminal block by measuring it with a multimeter atthe transmitter-end. For mV and thermocouples testcan be done with connected and disconnected to thetransmitter.

# Sensor

C Check the sensor operation; it shall be within itscharacteristics.C Check sensor type; it shall be the type and standard

that the TT301 has been configured to.C Check if process is within the range of the sensor and

the TT301.

NOTE:

A 21.0 or 3.9 mA current in XMTR mode indicates burnout.

Symptom : INCORRECT OUTPUT



C Check power supply voltage. The voltage at theTT301 terminals must be between 12 and 45V, andripple less than 0.4V.C Check for intermittent short circuits, open circuits

and grounding problems.

# Noise, Oscillation

C Adjust dampingC Check grounding of the transmitters housing, extra

important for mV and thermocouple input.C Check the terminal block for moisture.C Check that the shielding of the wires between

sensor/transmitter and transmitter/panel is groundedonly in one end.

# Sensor

C Check the sensor operation; it shall be within its characteristics.

C Check sensor type; it shall be the type and standardthat the TT301 has been configured to.


C Check the integrity of circuit replacing it with a spareone.

# Calibration

C Check calibration of transmitter.


DISASSEMBLY PROCEDURE

Refer to Fig. 5.1 - "TT301 Exploded View". Make sureto disconnect power supply before disassembling thetransmitter.

SensorIf the sensor is mounted on the transmitter, firstdisconnect the wires in order to prevent the wires frombreaking. To access the terminal block, first loose thecover locking screw on the side marked "Field

Terminals", then unscrew the cover.

Electronic CircuitsThe main board (5) and input board (7) are matchedpairs and must be changed together and not mixed withothers.

To remove the circuit boards (5 and 7) and display (4),first loose the cover locking (14) on the side notmarked "Field Terminals" then unscrew the cover (1).

WARNING:

The board has CMOS components which may be damaged byelectrostatic discharges. Observe correct procedures forhandling CMOS components. It is also recommended to storethe circuit boards in electrostatic-proof cases.

Loosen the two screws (3) that anchors the display andthe main circuit board. Gently pull out the display, andthen the main board (5). To remove the input board (7),first unscrew the two screws (6) that anchors it to thehousing (8), gently pull out the board.

REASSEMBLY PROCEDURE

C Put input board (7) into housing (8).C Anchor input board with its screws (6).C Put main board (5) into the housing, ensuring all inter

connecting pins are connected.C Put display (4) into the housing, observing the four

mounting positions (see Fig. 5.2) "SMAR" shouldpoint in the direction desired as UP.C Anchor main board and display with their screws (3).C Fit the cover (1) and lock it using the locking screw

(13).

INTERCHANGEABILITY

Calibration data is stored in the EEPROM of the mainboard, hence READING TRIM must be done if main-board or input board has been changed.

RETURNING MATERIALS

Should it become necessary to return the transmitterand/or Hand-Held Terminal to SMAR, simply contactyour local agent or SMAR office, informing the defectiveinstrument's serial number, and return it to our factory.

In order to expedite analysis and solution of theproblem, the defective item should be returned with adescription of the failure observed, with as much detailsas possible. Other information concerning to theinstrument operation, such as service and processconditions, is also helpful.

Fig. 5.1 – Exploded View


SPARE PARTS LIST FOR TRANSMITTER

DESCRIPTION OF PARTS POSITION CODE

HOUSING, Aluminum (NOTE 1)

. 1/2 - 14 NPT

. M20 x 1.5

. PG 13.5 DIN

HOUSING, 316 SS (NOTE 1)

. 1/2 - 14 NPT

. M20 x 1.5

. PG 13.5 DIN

COVER

. Aluminum

. 316 SS

COVER WITH WINDOW FOR INDICATION

. Aluminum

. 316 SS

COVER LOCKING SCREW

EXTERNAL GROUND SCREW

IDENTIFICATION PLATE FIXING SCREW

8

8

8

8

8

8

1 and 13

1 and 13

1

1

14

11

15

214-0200

214-0201

214-0202

214-0203

214-0204

214-0205

204-0102

204-0105

204-0103

204-0106

204-0120

204-0124

204-0116

DIGITAL INDICATOR 4 214-0108

TERMINAL HOLDER INSULATOR 10 214-0220

MAIN AND INPUT CIRCUIT BOARD ASSEMBLY 5 & 7 214-0221

0-RINGS (NOTE 2) Cover, BUNA-N 2 204-0122

TERMINAL HOLDING SCREW

MAIN BOARD SCREW

. For units with indicator

. For units without indicator

INPUT BOARD SCREW

12

3

3

6

204-0119

204-0118

204-0117

214-0125

MOUNTING BRACKET FOR 2" PIPE MOUNTING (NOTE 3)

. Carbon Steel

. Stainless Steel 316

. Carbon Steel bolts, nuts, washers and U-clamp in Stainless Steel

18

18

18

214-0801

214-0802

214-0803

LOCAL ADJUSTMENT PROTECTION CAP 9 204-0114

NOTE: 1) It includes terminal holder insulator, bolts (cover lock, grounding and terminal holder insulator) andidentification plate without certification.

2) 0-Rings are packaged in packs of 12 units.3) Including U-clamp, nuts, bolts and washers.


ACESSORIES

ORDERING CODE DESCRIPTION

SD_1

HT2

IF3

DP03

DP12

BE1

Magnetic tool for local adjustment

Hand-Held Terminal - 80 characters

HART Protocol Interface

General Purpose 32K RAM PACK

TT301 - Version 1.xx, English Language Datapack

Battery eliminator - 9V (110/220 VAC)

Fig. 5.2 – Four Possible Positions of the Display

Technical Data 6.1

6 TECHNICAL DATA

Functional Specifications

InputsOptions see table.

Output SignalTwo-wire,4-20 mA with superimposed digital communi-cation (HART Protocol Version 5.1/Transmitter/Poll-Response mode/Common 4-20 mA).

Power Supply12 to 45 Vdc

Load Limitation

IndicationOptional 42 digit LCD indicator.

Hazardous Location CertificationExplosion proof, weather proof and intrinsically safeCENELEC and FM standards (Pending).

Zero and Span AdjustmentNoninteractive, by Hand-Held Terminal or local adjust-ment.

Temperature LimitsOperation: -40 to 85 ºC (-40 to 185 ºF)Storage: -40 to 120 ºC (-40 to 250 ºF)Digital Display: -10 to 60 ºC (-14 to 140 ºF) operation

-40 to 85 ºC (-40 to 185 ºF)without damage

Loss of Input (Burnout)/Failure AlarmIn case of sensor burnout or circuit failure, the selfdiagnostics drives the output to 3.9 or to 21.0 mA,according to the user's choice.

Humidity Limits10 to 100% RH

Turn-on TimeApproximately 10 seconds.

Update TimeApproximately 0.5 second.

DampingAdjustable 0-32 seconds.

ConfigurationThis is done by an external Hand-Held Terminal, thatcommunicates with the transmitter remote or locallyusing Hart Protocol. Locally the magnetic tool can beused as well. The magnetic tool can configure themajority of the items provided the transmitter is fittedwith a display.

HHT Main FeaturesRAM memory: 64 KbytesEPROM memory: 128 Kbytes, DatapackDisplay: 80 characters, 4 linesPower Supply: 9 VdcDimensions: Length 142 mm (5.59"), Width 78 mm

(3,07"), Depth 29.3 mm (1.15")

Performance Specifications

AccuracySee the following tables.

Ambient Temperature EffectFor a 10E C variation:

mV (-6...22 mV), TC (NBS: B, R, S, T): "0.03% of theinput milivoltage or 0.002 mV whichever is greater.

mV (-10...100 mV), TC (NBS: E, J, K, N; DIN: (L, U): "0.03% of the input milivoltage or 0.01 mV whicheveris greater.

mV (-50...500 mV): "0.03% of the input milivoltage or0.05 mV whichever is greater.

Ohms (0...100 Ω), RTD (GE: Cu10) : "0.03% of the input resistence or 0.01 Ω whichever is greater.

Ohms (0...400 Ω), RTD (DIN: Ni: 120; IEC: Pt50, Pt100;JIS: Pt50, Pt100): "0.03% of the input resistence or0.04 Ω whichever is greater.

Ohms (0...2000 Ω), RTD (IEC: Pt500): "0.03% of the input resistence or 0.2 Ω whichever is greater

TC: Cold-junction compensation rejection 60:1Reference: 25,0 " 0,3E C

Power Supply Effect"0.005% of calibrated span per volt.

Vibration EffectMeets SAMA PMC 31.1

Electro-Magnetic Interference EffectDesigned to comply with IEC 801


Physical Specifications

Electrical Connection1/2-14 NPT, Pg 13.5 or M20 x 1.5.

Material of ConstructionInjected low copper aluminum with polyester painting or316 Stainless Steel housing, with Buna N 0-rings oncover (NEMA 4X, IP67).

MountingCan be attached directly to the sensor. With an op-tional bracket can be installed on a 2" pipe or fixed ona wall or panel.

WeightWithout display and mounting bracket: 0.80 kgAdd for digital display: 0.13 kgAdd for mounting bracket: 0.60 kg

Control Characteristics (Optional)

PIDProportional Gain: 0 to 100Integral Time: 0.01 to 999 min/repDerivative Time: 0 to 999 sDirect/Reverse ActionLower and Upper output limits: -0.6 to +106.25%Output rate-of-change limit: 0.02 to 600 %/sPower-on safety output: -0.6 to +106.25%Antireset windupBumpless Auto/Manual transferSetpoint Generator up to 16 points, up to 19999minutes

AlarmDual, trip levels adjustable over entire range.High or Low action.Acknowledge, messaging

2, 3 OR 4 WIRES DIFERENTIAL

SENSOR TYPE RANGE ºC RANGE ºFMINIMUN

SPAN ºC

ºC DIGITAL

ACCURACY*RANGE ºC RANGE ºF

MINIMUN

SPAN ºC

ºC DIGITAL

ACCURACY*

Cu10 GE -20 to 250 -4 to 482 50 ±1.0 -270 to 270 -486 to 486 50 ±2.0

Ni 120 DIN -50 to 270 -58 to 518 5 ±0.1 -320 to 320 -576 to 576 5 ±0.5

Pt50 IEC -200 to 850 -328 to 1562 10 ±0.2 -1050 to 1050 -1890 to 1890 10 ±1.0

Pt100 IEC -200 to 850 -328 to 1562 10 ±0.2 -1050 to 1050 -1890 to 1890 10 ±1.0

Pt500 IEC -200 to 450 -328 to 842 10 ±0.2 NA NA NA NA

Pt50 JIS -200 to 600 -328 to 1112 10 ±0.25 -800 to 800 -1440 to 1440 10 ±1.0

RTD

Pt100 JIS -200 to 600 -328 to 1112 10 ±0.25 -800 to 800 -1440 to 1440 10 ±1.5

B NBS +100 to 1800 212 to 3272 50 ±0.5** -1700 to 1700 -3060 to 3060 60 ±1.0**

E NBS -100 to 1000 -148 to 1832 20 ±0.2 -1100 to 1100 -1980 to 1980 20 ±1.0

J NBS -150 to 750 -238 to 1382 30 ±0.3 -900 to 900 -1620 to 1620 30 ±0.6

K NBS -200 to 1350 -328 to 2462 60 ±0.6 -1550 to 1550 -2790 to 2790 60 ±1.2

N NBS -100 to 1300 -148 to 2372 50 ±0.5 -1400 to 1400 -2520 to 2520 50 ±1.0

R NBS 0 to 1750 32 to 3182 40 ±0.4 -1750 to 1750 -3150 to 3150 40 ±2.0

S NBS 0 to 1750 32 to 3182 40 ±0.4 -1750 to 1750 -3150 to 3150 40 ±2.0

T NBS -200 to 400 -328 to 752 15 ±0.15 -600 to 600 -1080 to 1080 15 ±0.8

L DIN -200 to 900 -328 to 1652 35 ±0.35 -1100 to 1100 -1980 to 1980 35 ±0.7

THERMO-COUPLE

U DIN -200 to 600 -328 to 1112 50 ±0.5 -800 to 800 -1440 to 1440 50 ±2.5

* Accuracy of value read on display and accessed by communication using HHT. The 4-20 mA accuracy is thedigital accuracy ±0.03%.

** Not applicable for the first 20% of the range (up to 440 ºC).NA Not applicable.

Technical Data 6.3

SENSORRANGE

mVMINIMUNSPAN mV

DIGITAL *ACCURACY %

-6 to 22 0.40 ±0.02% or ±2 µV

-10 to 100 2.00 ±0.02% or ±10 µVmV

-50 to 500 10.00 ±0.02% or ±50 µV

-28 to 28 0.40 ±0.1% or ±10 µVmV DIF.

-110 to 110 2.0 ±0.1% or ±50 µV

SENSORRANGE

OHMMINIMUNSPAN mV

DIGITAL *ACCURACY %

0 to 100 1 ±0.02% or ±0.01 Ohm

0 to 400 4 ±0.02% or ±0.04 OhmOHM

0 to 2000 20 ±0.02% or ±0.20 Ohm

-100 to 100 1 ±0.08% or ±0.04 OhmOHM DIF.

-400 to 400 4 ±0.1% or ±0.2 Ohm

ORDERING CODE

MODELTT301 TEMPERATURE TRANSMITTER

CODE Local Indicator01

Without IndicatorWith Digital Indicator

CODE Mounting Bracket0127

Without BracketCarbon Steel Bracket316 SS BracketCarbon Steel Bracket With 316 SST Fasteners

CODE Zero and Span Adjustment1 With Local Adjustment

CODE Electrical Connections0ABZ

½ - 14 NPTM20 x 1.5Pg 13.5 DINOuters – Specify

CODE Optional Items*H1Z

316 SST HousingWith Special Features – Specify

TT301 - 0 2 - 1 B / *

* LEAVE IT BLANK FOR NO OPTIONAL ITEMS.

Manual Smar Tt301

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Transcript of Manual Smar Tt301