AIRANGER IV - Siemens · TABLE OF CONTENTS Title Page GENERAL INFORMATION About This Manual 1 – 1...

AIRANGER IV

PROGRAMMABLE LEVEL SYSTEM

Instruction Manual

PL-250

April 1992

33452500PRR 2.1

Thank you for purchasing Milltronics products. We endeavour to design

equipment that is simple to use and reliable in its operation, with the aim of

satisfying our customers needs.

Milltronics has been designing and manufacturing process equipment since 1954.

Our fields of expertise include ultrasonic level measurement, in-line weighing of

dry bulk solids and motion sensing.

Milltronics is established world wide through associate offices and repre-

sentatives. Our network is continually being refined to provide our customers

with first rate sales information, engineering assistance and after sales support.

For more details on our products and service, please contact us and we will provide

you with a listing of the offices or representatives nearest you.

P.O. Box 4225730 The KingswayPeterborough, ONCanada K9J 7B1

709 Stadium Drive Arlington, TexasU.S.A. 76011

Oak House Everoak EstateBromyard RoadWorcester, WR2-5HPEngland

Château de la SaurinePont de BayeuxB.P. 613590 MeyreuilAix en ProvenceFrance

Tel. (705) 745-2431Fax (705) 745-0414

Tel. (817) 277-3543Fax (817) 277-3894

Tel. (01905) 748404Fax (01905) 748430

Tel. 42.65.69.00Fax 42.58.63.95

TABLE OF CONTENTS

Title Page

GENERAL INFORMATION

About This Manual 1 – 1Conventions 1 – 1About The AiRanger IV 1 – 2

SPECIFICATIONS

AiRanger IV 2 – 1Transducer 2 – 3Temperature Sensor 2 – 4Cabling 2 – 4Peripherals 2 – 4

INSTALLATION

AiRanger IV 3 – 1Transducers 3 – 1Temperature Sensors 3 – 1Interconnection 3 – 2Internal Checks 3 – 2

START UP

Operating Modes 4 – 1Keypad 4 – 1Displays 4 – 3Programming 4 – 4Quick Start 4 – 5

Essential Calibration 4 – 6Enhanced Calibration 4 – 8

Operation 4 – 10

FUNCTIONAL

Scanning 5 – 1Transducer 5 – 2Damping 5 – 2Temperature 5 – 2Blanking 5 – 3Loss Of Echo 5 – 4Alarms 5 – 4Analog Output 5 – 5

APPLICATIONS

Application Example 6 – 1Stand Pipe Application 6 – 2

PL-250 i

PARAMETERS

Measurement Calibration Parameters 7 – 1Enhanced Calibration Parameters 7 – 3

TROUBLE SHOOTING

Trouble Shooting Tips 8 – 1Advanced Calibration 8 – 3

Hold Measurements 8 – 3Transducer Location and Aiming 8 – 3Echo Processing Displays 8 – 4Echo Profile Memory 8 – 6Echo Processing Parameters 8 – 6

APPENDICESGlossary 9 – 1Alphabetical Parameter Listing 9 – 2Maintenance and Spare Parts 9 – 3Error Messages 9 – 4

Program Log 9 – 5Communication 9 – 7

Protocol 9 – 7Data Field Descriptions 9 – 8Message Types 9 – 11

ASCII/Hexadecimal/Binary Chart 9 – 15

FIGURES

Fig. 1 Airanger IV Outline and Mounting 10 – 1Fig. 2 LR Series Transducer Outline and Wiring 10 – 2Fig. 3 ST 100 Series Transducer Outline and Wiring 10 – 3Fig. 4 ST 25/50 Series Transducer Outline and Wiring 10 – 4Fig. 5 Temperature Sensor Outline and Wiring 10 – 5Fig. 6A Transducer Mounting - Easy Aimer Kit 10 – 6Fig. 6B Easy Aimer Kit Installation 10 – 7

Fig. 7 Transducer Mounting - ST 100 10 – 8Fig. 8 Transducer Mounting - Liquid Applications 10 – 9Fig. 9A Typical Solids Applications 10 – 10Fig. 9B Typical Solids Applications 10 – 11Fig. 9C Typical Solids Applications 10 – 12Fig. 10 AiRanger IV Wiring Formats 10 – 13Fig. 11A AiRanger IV Computer Board Schematic 10 – 14Fig. 11B AiRanger IV Input/Output Board Schematic 10 – 15Fig. 11C AiRanger IV Transceiver Board Schematic 10 – 16Fig. 11D AiRanger IV Display Board Schematic 10 – 17Fig. 11E AiRanger IV Backplane Board Schematic 10 – 18Fig. 11F AiRanger IV Terminal Board Schematic 10 – 19Fig. 11G AiRanger IV Power Supply Schematic 10 – 20

PL-250 ii

GENERAL INFORMATION

ABOUT THIS MANUAL

It is essential that this instruction manual, PL-250, be referred to during the installation and start up of theAiRanger IV.

SPECIFICATIONS, lists the environmental, physical, and operational characteristics associated with thenormal operation of the AiRanger IV level measurement system.

INSTALLATION, describes the typical AiRanger IV mounting and interconnection procedure.

QUICK START, provides an overview of the procedure required to calibrate and operate the AiRanger IV.

FUNCTIONAL, describes some of the important design features of the AiRanger IV.

APPLICATIONS, provides an example of the calibration required for a typical multiple point levelmeasurement application.

PARAMETERS, provides a detailed explanation of the calibration and programming features available to theoperator.

TROUBLESHOOTING, provides the information required to diagnose and correct conditions which mayinterfere with AiRanger IV performance.

APPENDICES, includes additional information which may provide assistance in the cal ibration and/oroperation of the AiRanger IV level measurement system.

FIGURES, includes outline, installation, and interconnection drawings of the AiRanger IV system componentsas well as schematic diagrams of the individual AiRanger IV circuit boards.

CONVENTIONS

Throughout this instruction manual the following symbols and presentation practices have been utilized:

[-123.ABC] alpha numeric characters enclosed within these brackets represents information displayed by the AiRanger IV.

"ENTER" alpha numeric characters enclosed within quotation marks represents a button on the AiRanger IV keypad.

Italics are used to identify the defined word(s) or phrase within a definition statement.

Information of a higher order of importance, is in bold pr int and indented from both l eft and right margins.

PL-250 1 – 1

ABOUT THE AiRanger IV

The AiRanger IV level measurement system consists of the microprocessor based AiRanger IV electronicspackage and one or more Milltronics ultrasonic transducer(s).

The AiRanger IV may be utilized with Milltronics ST-25, ST-50, ST-100, LR-21, or LR-13 series transducers tooperate in ranges from 0.6 metres (2 feet) to 61 metres (200 feet).

System calibration is completed by entering information specific to the application into the AiRanger IV batteryprotected memory via the front panel keypad.

The AiRanger IV supplies a transmit pulse to the transducer which in turn emits a precisely defined burst of

ultrasonic energy. The energy reflected (echo) from the material surface, delayed in time relative to thedistance traveled, is received by the transducer. This time interval, being directly proportional to the distancebetween the transducer and the target, is processed to provide audible alarm, data, display, and analogoutputs as well as alarm/control relay operation.

The self cleaning nature of Milltronics transducers ensures rel iable, maintenance free operation is achieved industy, steamy, or corrosive environments. Special transducer facings provide additional protection fromextremely corrosive material.

An optional temperature sensor may be utilized in conjunction with the AiRanger IV temperaturecompensation circuitry to ensure system accuracy is maintained where the temperature of the transducerbeam path varies in temperature during normal operation.

PA

RA

ME

TER

(PA

R)

01 U

NIT

S: (F

EET

(1),

MET

ERS

(2),

%(3

)

02 P

T. IN

(1) O

R O

UT

(0) O

F SE

RVI

CE

03 E

MPT

Y D

ISTA

NC

E TO

TR

ANSD

UC

ER

04 S

PA

N

05 B

LAN

KIN

G

06 M

ATER

IAL

(1) O

R S

PAC

E (2

)

07 F

ULL

REA

DIN

G C

HEC

K

08 H

IGH

ALA

RM

SET

09 L

OW

ALA

RM

SET

10 F

AILS

AFE:

HIG

H(1

), LO

W(2

), SA

FE(3

)

11 F

AILS

AFE

TIM

ER: M

INU

TES

12 D

AMPI

NG

RAT

E: %

OF

SPAN

MIN

UTE

S

13 C

ON

VER

T D

ISPL

AY

14 D

ECIM

AL P

OIN

T LO

CAT

ION

(0 T

O 3

)

12 D

AMPI

NG

RAT

E: %

OF

SPAN

MIN

UTE

S

15 A

NALO

G O

UT: O

FF (0

). 0-

20(1

), 4-

20(2

)

16 A

LAR

M R

ELA

YS

AC

KN

SCAN

PR

OG

HO

LD

PS-10 power supply

transceiver board

I/O board

CPU board

display board

front panel

backplane board

terminal board

PL-250 1 – 2

The AiRanger IV may be expanded by adding an SM-15 scanner module, and a transducer of the samefrequency for each point. Where the transducer beam path atmosphere temperature is similar for all scanpoints a single temperature sensor may be used. Alternatively, a temperature sensor may be added for eachpoint if independent temperature compensation is to be utilized.

The optional AO-15 analog output module provides independent analog output, and the SAM-30 satellitealarm module will provide two dedicated alarm/control relays, for each of up to 15 points scanned.

The maximum expansion capability of one AiRanger IV is 60 points (4xSM-15), providing a cost effectivescanning level measurement system for multiple point applications.

The AiRanger IV data output may be connected directly to a Milltronics SPD single point display. The RSM-60remote scanning monitor may be utilized if remote display of up to 60 points is desired. The Buffered InterfaceConverter BIC-II will permit the AiRanger IV to communicate with a host computer or programmable logiccontroller equipped with an RS-232C or RS-422 communication port.

temperature sensor

SCINORTLLIM MILLTRONICS

BIC-II

MILLTRONICS

AiRANGER IV

TB2TB1 ALARM POINT

TB3

RC1

MILLTRONICS

LR - 21

S.P.D.

SAM - 30

AO - 15

SM - 15

AiRanger IV

BIC-II

customer’scomputer

RSM - 60

serial printer

PL-250 1 – 3

SPECIFICATIONS

AIRANGER IV

Power : » standard : » 115/230 VAC ± 15% jumper selectable, 50/60 Hz, 100 VA maximum

» special : » 100/200 VAC ± 15% jumper selectable, 50/60 Hz, 100 VA maximum

Fuses : » main power : » Buss MDL 2 amp or equivalent

» secondary : » Buss AGC 2 amp or equivalent

Range : » 60 m (200 ft) max, under average conditions and dependent upon transducer type

Accuracy : » within 1% of maximum range

Resolution : » 0.1% of maximum range or 50mm (2"),which ever is greater

Temperature : » standard : » -20 to 50°C (-5 to 122°C) ambient air temperature outside enclosure

» optional : » thermostatically controlled enclosure heater where ambienttemperatures below -20°C (-5°F) are expected.

Scan points : » standard : » single point of measure

» optional : » up to 60 points in increments of 15

Battery : » 3 volt lithium, PCB mount (memory backup) supplied» 1 year operating life» Duracell type DL-2025, Eveready, Sanyo or GE type CR-2025,

Ray-o-vac or Panasonic CR-2016

Keypad : » 21 key sealed membrane with tactile feedback

PL-250 2 – 1

Key switch : » 3 positions, program, scan, and hold» 2 keys (required for operation) supplied

Outputs : » transducer drive : » 125 V (peak) pulses of 1.8 msec duration every 100 msec

» display : » 2 LCD’s, 4 digits each, 19 mm (0.75") high5 status indicator LED’s

» analog : » isolated 0-20 or 4-20 mA DC into 750 max» single point, multi point average, or time-shared between

scanned points» 300 VAC input/output isolation

» relays : » 1 high material level operated relay» 1 low material level operated relay» one form "C" SPST contact per relay rated 5A/220VAC

non-inductive» programmable setpoints» 5% of span deadband» single point or time shared between scanned points

All relays are certified for use where the short circuit capacity of the circuits in which they are connected is limited by

fuse(s) having ratings not exceeding the rating of the relays.

» annunciator : » adjustable from 0 to 85 db @ 1 metre» functions; material level alarm, keypad operation, initial

power up and power down audible indication

Data link : » ± 20 mA digital current loop for communication with Milltronics AO-15, SAM-30, RSM-60, BIC-II, and/or SPD

» operator selectable baud rates; 300, 1200, 2400, and 9600

Enclosure : » standard : » Nema 4 painted steel with Plexiglas window» 406mm W x 508mm H x 203mm D (16" W x 20" H x 8" D)

» optional : » 762mm W x 610mm H x 203mm D (30" W x 24" H x 8" D)

Shipping weight : » 30 Kg (67 lb) standard enclosure with main electronics and no options

PL-250 2 – 2

TRANSDUCER

GENERAL : » all transducers are CSA, FM, and BASEEFA approved » 1 transducer per scanned point of measure» all scanned transducers must be of the same frequency» specified range applies to typical operating conditions

* maximum ambient temperature for polyethylene foam facing is 71°C (160°F)

** approximate shipping weight of transducer with standard cable length and unflanged

ST-50 : » standard : » CPVC body with polyurethane face» 1" NPT std. mounting/conduit connection

» optional : » CPVC facing for corrosive applications» Teflon facing (flange mounted transducers only) for highly

corrosive applications» Polyethylene foam facing for dry, dusty, applications» flange mounting, sizes: 6", 8" and 12"

(metric sizes also available)

ST-100 : » standard : » aluminum housing with polyurethane face» 1/2"NPT internal thread conduit connection

» optional : » CPVC facing for corrosive applications» Polyethylene foam facing for dry, dusty, applications

LR-21 and LR-13 : » aluminum housing with polyethylene and styrofoam face» 1" NPT std. mounting/conduit connection

MODEL AMBIENT FREQUENCY RANGE WEIGHT** TEMPERATURE (Beam Angle) std. cable

ST-50 -40 to 93°C* 41.5 KHz 0.6 to 15.2 M 3.9 Kg(-40 to 200°F) (5°) (2 to 50 ft) (8.5 lb)

ST-100 -40 to 71°C 21 KHz 0.9 to 30 M 15.8 Kg(-40 to 160°F) (7°) (3 to 100 ft) (35 lb)

LR21FM -40 to 71°C 21 KHz 0.9 to 30 M 3.9 Kg(-40 to 160°F) (5°) (3 to 100 ft) (8.5 lb)

LR13FM -40 to 71°C 13 KHz 1.2 to 61 M 7.7 Kg(-40 to 160°F) (5.5°) (4 to 200 ft) (17 lb)

PL-250 2 – 3

TEMPERATURE SENSOR (optional)

Resistance : » 9.6K (nominal) at 20°C ±5 K temperature variance

Separation : » 365 m (1200 ft) from AiRanger IV under specified conditions. Refer to Cabling.

TS-2 : » -40 to 70°C (-40 to 158°F)» PVC body » CSA, FM and BASEEFA approved

LTS-1 : » -40 to 93°C (-40 to 200°F)» 304 stainless steel» FM and BASEEFA

LTS-1C : » -40 to 93°C (-40 to 200°F)» 304 stainless steel» CSA

CABLING (optional)

Transducer : » RG-62U coax» must be run in grounded metal conduit,

separate from power cable

Temperature Sensor : » Belden 8760, 1 pair shielded/twisted, 18 AWG or equivalent

PERIPHERALS (optional, refer to instruction manual PL-274)

SM-15 : » scans 15 points/module max» 4 modules provides 60 points

AO-15 : » 15 analog outputs/module max» 4 modules provides 60 outputs

SAM-30 : » 2 relays/point scanned/module» 15 points/module max» 8 modules provides 4 relays/point for 60 points

PL-250 2 – 4

RSM-60 : » provides remote indication of point of measure status for allpoints scanned

» permits remote alarm acknowledgement

SPD : » provides single point of measure status indication

BIC-II : » converts the data link to RS-232 or RS-422 protocol for datacommunication between the AiRanger IV and the customerscomputer or PLC

PERIPHERAL BOOSTER : » required where the total load presented by the connected peripherals and interconnecting cables exceeds the powersupply and/or communication capabilities of the AiRanger IV.

PL-250 2 – 5

INSTALLATION

AIRANGER IV

The AiRanger IV should be mounted in an area that is within the ambient temperature range specified, and issuitable for the electronics and enclosure. The enclosure door should be accessible for programming and

viewing and have sufficient room to swing open.

Refer to FIGURES / Fig.1

Do not mount the AiRanger IV in direct sunlight without the use of a sun shield.

TRANSDUCERS

1. Mount the transducer above the highest anticipated material level by at least :

» 60 cm (2 ft) for ST-25 series transducers» 60 cm (2 ft) for ST-50 series transducers» 90 cm (3 ft) for ST-100 series and LR-21 transducers» 120 cm (4 ft) for LR-13 transducers

2. The sound path between the transducer and material must be free from obstruction.

3. Aim the transducer toward the draw point at the bottom of the bin in solids applications, and as

perpendicular as possible to the material surface in all cases.

4. Mount and/or aim transducers such that the sound beam is directed away from vessel fill spouts, rough vessel walls, ladders etc.

Refer to FIGURES.

TEMPERATURE SENSORS

1. Mount the temperature sensor in a location which will best represent the airtemperature between the transducer and material.

2. Temperature sensors must not be mounted in direct sunlight or near heat sources.

Refer to Fig.5.

PL-250 3 – 1

INTERCONNECTION

Connect power, transducer, temperature sensor (optional), and peripheral equipment (optional) to the AiRanger IV.

Refer to FIGURES. For multipoint systems refer to the Peripherals instruction manual PL-274.

All wiring must be done in conjunction with approved conduit, boxes and fittings and to procedures in accordance with all governing regulations.

INTERNAL CHECKS

1. If a temperature sensor is not used, a 9.53 K ohm, 1/4 W resistor must be installed across AiRanger IVTerminal Board TB1- 10 & 11.

2. The communication baud rate of the AiRanger IV and any peripherals utilized must all be identical.Refer to Communication \ Protocal \ Baud Rate.

3. A memory backup battery must be installed in one of the battery sockets located on the AiRanger IV Computer board.

4. All ribbon cables must be properly aligned and inserted before power is applied.

5. Transducer/transceiver board operating frequencies must match. The transceiver board frequency is printed at the bottom center of the board.

6. Check that the PS-10 power selection jumper(s) TB1-4,5,6,7 are appropriate for the power source connected.

» standard : » 115 or 230 VAC

» special : » 100 or 200 VAC

7. The main fuse (PS-10, FU1) and secondary fuse (PS-10, FU2) must be installed. For fuse ratings refer to SPECIFICATIONS / AiRanger IV.

8. Connect power. Ensure wires are securely fastened to the proper terminals.

Do not operate the AiRanger IV with the ground wire di sconnected.

9. Flip the AiRanger IV POWER switch (PS-10) to ON.

94/09/19PL-250 3 – 2

START UP

OPERATING MODES

As selected by the AiRanger IV front panel locking key switch, three modes of operation are available :

» program mode, the operator enters parameter values or option codes via the AiRanger IV front panel keypad for each point of measure placed in service.

» scan mode, (normal operating mode) the AiRanger IV scans the individual points of measureplaced in service, updating the measurement results displayed.

» hold mode, utilized for analysis and/or alteration of the AiRanger IV echo processing system.Refer to TROUBLESHOOTING.

Within a few seconds of selecting an alternate operating mode the AiRanger IV will display the operatingmode entered.

Removing the key from the locking key switch (in the scan mode only) secures all calibration programmingfrom inadvertent alteration during normal operation.

KEYPAD

The AiRanger IV is equipped with a front cover membrane keypad. The terminal board annunciator providesan audible indication each time a keypad button is pressed. The function of some keypad buttons aredependent upon the operating mode entered. For HOLD mode keypad button functions refer to the TROUBLE

SHOOTING section.

KEYPAD OPERATING FUNCTIONBUTTON MODE

0 - 9 PROG & SCAN Numerical entry

PROG & SCAN Prepare to receive a scan point identification number

PROG Advance the display to the next sequential scan point

SCAN Advance the display to the next sequential scanpoint in service

SCAN Resume displaying all scan point measurements

NEXTPOINT

AUTOADV.

SELECTPOINT

PL-250 4 – 1

SCAN Display only those scan points in a high or high-highalarm condition in numerical sequence

SCAN Display only those scan points in a low or low-lowalarm condition in numerical sequence

SCAN Alarm condition acknowledged, reset alarms as

determined by PAR 16 - Alarm Relays Ackn.

Assign/remove a point to/from the priority scan loop

PROG Prepare to receive a parameter identification number

PROG Advance the display to the next sequential parameternumber

PROG Store in memory the reading display value as theparameter value or option code for the parameter andscan point number displayed

PROG Clear the current reading display.

PROG Insert a decimal point to the right of the digit(s) in thereading display

In the PROG mode, pressing "CLEAR" and then "ENTER" will reset the parameter value to the factory settingfor the parameter and scan point number displayed. This value is automatically stored in memory.

ALARM POINTS

L

ACKN.ALARM

SELECTPAR

NEXTPAR

ENTER

CLEAR

ALARM POINTS

H

PL-250 4 – 2

DISPLAYS

The AiRanger IV display functions are dependent upon the operating mode:

The scan point and parameter identification are always identified by a two digit number. A decimal point afterthe scan point number indicates the point has been assigned to the priority scan loop. A temporary colonflashes in the reading display every time the measurement results are updated.

In the status display :

» F indicates a loss of echo condition has occurred and the failsafe time delay has expired

» H indicates a high material level alarm condition

» HH indicates a higher material level alarm has been reached

» L indicates a low material level alarm condition

» LL indicates a lower material level alarm has been reached

All displays flashing, indicates that the AiRanger IV has entered an alarm condition which has not beenacknowledged.

pointstatus

readingreadingupdated

priority

point#

Scan Mode

parameter valueor option code

point#

parameter#

Prog. Mode

PL-250 4 – 3

PROGRAMMING

All programming is completed in the Program mode and is stored in battery backed RAM memory to preventinadvertent programming loss in the event of a power interruption.

Specific application information is entered into the appropriate AiRanger IV memory locations. Theselocations are identified by a Parameter Number (P#) and a Scan Point Number (Point#). The informationentered is referred to as a Parameter Value (Value). To enter specific application information the operator accesses the desired parameter, selects the desiredscan point number, views the parameter value on the LCD display, and then accepts or alters the currentparameter value.

The AiRanger IV will display a message to the operator, should an invalid parameter programming attempt bemade. Refer to APPENDICES/Error Messages.

Direct Parameter A ccess

To set and or alter a parameter value,

press "SELECT PAR",

key in the desired parameter number,

press "SELECT POINT",

key in the desired scan point,

The present parameter value (if any) for the selected parameter number and scan point is automaticallydisplayed.

Parameter A dvance

Some parameter numbers a grouped together in a string or loop to permit convenient scrolling through all loopparameter values for the displayed scan point.

Directly access a parameter value as previously described. Each time "NEXT PAR" is pressed the value of

the next parameter in the loop is displayed. When the last parameter in the loop is accessed, pressing "NEXTPAR" will cause the first parameter in the loop to be displayed. Scan Point Advance

This feature permits convenient scrolling through the parameter values of all scan points in service for thedisplayed parameter number.

Directly access a parameter value as described. Each time "NEXT POINT" is pressed, the parameter valuefor the next sequential scan point is displayed. When the parameter value of the last scan point in service isaccessed pressing "NEXT POINT" will cause the first numerical scan point in service to be displayed.

PL-250 4 – 4

Altering Parameter Values

Access the parameter value of the desired scan point and key in the new value. Pressing "ENTER" will storethe new parameter value in memory for the parameter number and scan point displayed. If a new value or"ENTER" is not pressed the previous parameter value will be retained.

Global Parameters

In some cases the same parameter value must apply to all scan points, these are referred to as globalparameters. Scan point 00 must be selected prior to entering or altering the value of a global parameter.

Similarly, a parameter value for any parameter number may be entered for all scan points simultaneously byselecting scan point 00.

Parameter Reset

A parameter may be reset to the original factory (default) value by accessing the desired parameter value andpressing "CLEAR","ENTER".

Should an occasion arise where all parameters are to be reset to the original factory value, flip the AiRangerIV PS-10, POWER switch to the OFF position and remove the battery from the computer board battery socketfor 60 seconds.

Resetting all parameters to the factory setting will require complete AiRanger IV reprogramming before normal operation may be resumed.

Ensure the memory backup battery is reinstalled prior to beginning programming.

QUICK START

Flip the AiRanger IV power switch ON. Insert the key into the front panel locking key switch. Turn the key to the PROG. position.

[ : ] [ prog ] displayed

PL-250 4 – 5

ESSENTIAL CALIBRATION

PAR 01 - UNITS

a) Press "SELECT PAR","0","1" (UNITS)b) Press "SELECT POINT","0","0" (all points scanned)

c) Press "1" or "2" (1 = feet, 2 = metres)d) Press "ENTER" (store in memory, LED illuminates)

[00:01] [ 2] displayed (eg metres)e) Press "3" and then "ENTER" (display in percent)

For display in UNITS rather than percent omit step e).

Press "NEXT PAR" (advance to PAR-02)

PAR 02 - PT. OF SERVICE

a) Press "SELECT POINT","0","1" (scan point 1)b) Press "O" or "1" (0 = out, 1 = in) eg 1 c) Press "ENTER" (store in memory)

[01:02] [ 1] displayed, (scan point 1 in service)d) Press "NEXT POINT" (repeat b) and c) for each point)

When programming a single point, omit step d).


PAR 03 - EMPTY DISTANCE TO TRANSDUCER

a) Key in value (in UNITS selected)b) Press "ENTER" (store in memory)

[01:03] [ 35.0] displayed (eg 35.0 metres)c) Press "NEXT POINT" (repeat a) and b) for each point)

When programming a single poi nt, omit step c).


PL-250 4 – 6

PAR 04 - SPAN

a) Key in value (in UNITS selected)b) Press "ENTER" (store in memory)

[01:04] [ 33.8] displayed (eg 33.8 metres)c) Press "NEXT POINT" (repeat a) and b) for each point)

When programming a single point, omit step c).


PAR 05 - BLANKING

a) Key in value (in UNITS selected)

b) Press "ENTER" (store in memory)[01:05] [ 1.2] displayed (eg 1.2 metres)

c) Press "NEXT POINT" (repeat a) and b) for each point)



PAR 06 - MATERIAL OR SPACE:

a) Press "SELECT PAR","0","6" (type of measurement desired) b) Press "SELECT POINT","0","0" (all points scanned)c) Press "1" or "2" 1 = material or 2 = space, eg 1)d) Press "ENTER" (store in memory)

[00:06] [ 1] displayed, (material display selected)


TRANSDUCER METRES FEETSERIES (min) (min)ST-25 0.6 2ST-50 0.6 2ST-100 0.9 3LR-21 0.9 3LR-13 1.2 4

PL-250 4 – 7

PAR 07 - FULL READING CHECK:

a) Press "SELECT PAR","0","7" (display the full reading)b) Press "SELECT POINT","0","1" (scan point 1)

[01:07] [ 33.8] displayed (eg full level is 33.8 metres)c) Press "NEXT POINT" (repeat step b) for each scan point)


Turn the key switch to the SCAN position to begin monitoring material levels.

ENHANCED CALIBR ATION

The following optional programming may be utilized to tailor the AiRanger IV operation as desired to suit theparticular application. Program the parameters associated with a desired feature only, all other parametersmay be left at their factory settings.

With the key switch in the PROG. position,

PAR 08 - HIGH ALARM SET:

a) Press "SELECT PAR","8" (high level alarm setpoint)

b) Press "SELECT POINT","0","1" (for scan point 1)c) Key in value (from empty in UNITS selected)d) Press "ENTER" (store in memory)

[01:08] [ 30.0] displayed (eg high alarm level = 30.0 m)e) Press "NEXT POINT" (repeat c) and d) for each point)

When programming a single poi nt, omit step e).


PAR 09 - LOW ALARM

a) Key in value (low level alarm setpoint) b) Press "ENTER" (store in memory)

[01:09] [ 5.0] displayed (eg low alarm level = 5.0 m)c) Press "NEXT POINT" (repeat a) and b) for each point)



PL-250 4 – 8

PAR 10 - FAIL SAFE

a) Press "1"or"2"or"3" (1 = high, 2 = low, 3 = hold)b) Press "ENTER" (store in memory)

[01:10] [ 3 ] displayed (eg factory setting, hold)c) Press "NEXT POINT" (repeat a) and b) for each point)



PAR 11 - FAIL SAFE TIMER

a) Key in value (0.0 to 999 minutes)b) Press "ENTER" (store in memory)

[01:11] [ 0.0] displayed (eg factory setting, no time delay)c) Press "NEXT POINT" (repeat a) and b) for each point)

When programming a single point, omit step c)


PAR 12 - DAMPING RATE

a) Key in value (0.1 to 999 % of span/minute)b) Press "ENTER" (store in memory)

[01:12] [ 100.0] displayed (eg factory, 100% of span/min)c) Press "NEXT POINT" (repeat a) and b) for each point)



PAR 13 - CONVERT DISPLAY

a) Key in value (0.01 to 99.99)b) Press "ENTER" (store in memory)

[01:13] [ 1.00] displayed (eg factory setting, no conversion)c) Press "NEXT POINT" (repeat a) and b) for each point)



PL-250 4 – 9

PAR 14 - DECIMAL PT. LOCATION

a) Press "SELECT POINT","0","0" (all scan points)b) Press "0","1","2", or "3" (decimal places from right)c) Press "ENTER" (store in memory)

[01:14] [ 1] displayed (eg factory, 1 digit decimal)


PAR 15 - ANALOG OUTPUT

a) Press "SELECT POINT","0","1" (scan point 1)b) Press "0","1", or "2" (0=no output, 1=0-20mA, 2=4-20ma)c) Press "ENTER" (store in memory)

[01:15] [ 0] displayed (eg off, factory setting = 0)d) Press "NEXT POINT" (repeat b) and c) for each point)

When programming a single point, omit step d).


PAR 16 - ALARM RELAYS ACKN. ("ACKN. ALARM" function)

a) Press "SELECT POINT","0","0" (all scan points)b) Press "0","1","2", or "3" (0 = stop beeping and flashing)c) Press "ENTER" (1 = 0 + override relay status)

(2 = 0 or automatic in 30 seconds)(3 = 1 or automatic in 30 seconds)

[00:16] [ 1] displayed (eg factory setting, override)

Turn the key switch to the SCAN position to begin monitoring material level(s).

Enhanced calibration parameters which are not listed on the AiRanger IV front cover are included in thePARAMETERS section of this instruction manual.

OPERATION

During normal operation (with the front panel key switch in the SCAN position) the AiRanger IV scans allpoints in service.

Measurement results, alarm status, and priority scan point indication are displayed for each point scanned.The front panel LED’s indicate the units of measure and type of measurement selected.

PL-250 4 – 10

The measurement results may be utilized by the AiRanger IV to provide analog output(s) and/or multipurposerelay operation as determined by the calibration programming.

Pressing "ACKN ALARM" resets all alarms associated with the scan point currently displayed, as determined by PAR 16 - Alarm Relays ACKN. For alternate functions, refer to PARAMETERS/Enhanced Calibration Parameters/PAR-23 Scan Mode.

Pressing "ALARM POINTS H" causes all scan points currently in a high alarm condition to be displayed innumerical sequence.

Pressing "ALARM POINTS L" causes all scan points currently in a low alarm condition to be displayed innumerical sequence.

Pressing "AUTO ADV." causes the sequential scan point display to resume.

Pressing "SELECT POINT" (followed by a valid scan point number) initiates the display of the selected scan point measurement results.

Pressing "NEXT POINT" causes the measurement results of the next sequential scan point to be displayed.

PL-250 4 – 11

FUNCTIONAL

SCANNING

The AiRanger IV mulitpoint level measurement system utilizes one AiRanger IV to scan up to 60 different

points of measurement.

The Milltronics SM-15 scanner module makes the connection between each of up to 15 transducers and theAiRanger IV transceiver. Up to 4 SM-15 modules may be connected, for a total of 60 points maximum. Allpoints must utilize transducers of the same frequency.

The SM-15 provides an auxiliary relay contact for each scan point serviced. These contacts are rated for3A/30V DC max and therefore must not be used for making power connections. Following are somesuggestions for auxiliary contact usage :

» to connect individual scan point temperature sensors to the AiRanger IV time shared temperature sensor input to provide independent temperature compensation for each scan point.

» to connect individual scan point devices to the AiRanger IV timeshared analog output.

» to illuminate scan point indication lamps.

Seven scanning modes are available as follows :

» smart scan, the scan sequence is varied, 1 to 16 transmit pulses are generated for each point scanned, as required. This is the factory set scan mode.

» fast scan, all points are scanned sequentially, four transmit pulses are generated for each point scanned.

» fast priority scan, four transmit pulses are generated for each point scanned, points may be assigned to the priority scan loop, all priority points are scanned sequentially each time one non-priority point is scanned.

eg : priority points : 1, 3 non-priority points : 2, 4, 5scan point sequence : 1, 3, 2, 1, 3, 4, 1, 3, 5, 1, 3, 2 etc.

» mixed priority scan, priority point(s) are smart scanned, while the non-priority points are fast scanned.

» smart priority scan, priority points and non-priority points are all smart scanned.

» fast express, priority points are fast scanned, non-priority points are not scanned.

» smart express, priority points are smart scanned, non-priority points are not scanned.

PL-250 5 – 1

TRANSDUCER

The transducer converts the electrical energy of the transmit pulse from the transceiver into acoustical energyand converts the acoustical energy of the echo back into electrical energy for the transceiver receive period.

The acoustical energy radiated outward from the transducer face, decreases in amplitude at a rate inverselyproportional to the square of the distance traveled.

Maximum power is radiated axially (perpendicular) from the transducer face in a line referred to as the axis oftransmission. Where power is reduced by half (-3 dB), a conical boundary defining the sound beam, centeredabout the axis of transmission is established. The diametric measurement of the cone in degrees defines thebeam angle and varies according to the transducer model.

Beam angle, frequency, range and chemical compatability are the more prominent characteristics forconsideration, when choosing a transducer model for an application.

DAMPING

The AiRanger IV provides operator adjustable damping (P-12) to control the maximum rate of change of thedisplayed measurement reading and the analog mA output signal. As alarms respond to the dampenedmeasurement reading, they indirectly fall under the control of the damping function. Damping is set in % ofspan per minute.

eg : if P-01 (UNITS) = 2 (METRES)and P-04 (SPAN) = 20and P-12 (DAMPING) = 10 (% OF SPAN/MINUTE)then the damping rate is 2 m/min.

Damping may be utilized where the physical limitations affecting transducer location are such that, materialfalling into the sound path of the transducer cannot be avoided, or where liquid surfaces are in agitation.

When in the Hold mode, damping is automatically overridden in order that the fastest possible response to ameasurement is achieved.

If the transducer aiming is being adjusted while in the Run mode, it is suggested that damping be at thefactory setting (100% of span per minute). Damping can later be changed to suit measurement requirements.

TEMPERATURE

As temperature affects the speed of sound, the AiRanger IV temperature compensation feature may beutilized to maintain measurement accuracy over the range of temperatures encountered in the transducersound path.

With a 9.53 K resistor connected to the AiRanger IV Terminal Board TB1-10/11, the temperature inducederror is equal to 0.17% of transducer to material distance per degree Celsius of transducer sound pathtemperature deviation from 20°C.

PL-250 5 – 2

By replacing this resistor with a temperature sensor mounted in an area representative of the transducersound path temperature, this error is reduced to 0.09% of the measurement reading, for any temperaturewithin the specified range of the equipment.

A single temperature sensor may be utilized for a multipoint AiRanger IV application if all transducer soundpath temperatures are equal.

For multipoint systems where the temperature of the transducer sound paths are independently variable, atemperature sensor dedicated to each scan point is connected to the SM-15 scanning module auxiliarycontact. The SM-15 time shares the Terminal Board TB1-10,11 input between each temperature sensor.

Temperature sensors must not be mounted in direct sunlight or near any radiant heat source.

BLANKING

Blanking (P-05) is used to ignore the zone in front of the transducer where ringing or a false echo would be ata level that would otherwise interfere with the processing of the true echo. The minimum blanking is as follows.

Ringing is the inherent nature of the transducer mass to continue vibrating after the transmit pulse hasceased. The amount of ringing varies with the type of transducer utilized and decays to acceptable levels inthe order of milliseconds.

Excessive cold or over tightening the transducer mounting may increase the ring time such that it could be

detected during the receive cycle.

Appearing as an incorrect high level reading, this condition may be overcome by :» warming the transducer» loosening the transducer mounting» increasing blanking

The zone beyond the zero or empty level where false echoes may appear which could interfere with theprocessing of the true echo is ignored.

For applications where the zero level is above the bottom of the vessel and monitoring of the zone below zerois desired, Range Extension (PAR-27) may be used.

Range Extension is entered as a percentage of Empty (PAR-03). Increasing Range Extension reduces theprotection from false echo detection. If false echoes appear beyond the zero level, Range Extension shouldbe reduced.

Blanking and Range Extension are automatically corrected for sound velocity change, where temperaturecompensation is used.

TRANSDUCER METRES FEETST-25 0.6 2ST-50 0.6 2

ST-100 0.9 3LR-21 0.9 3LR-13 1.2 4

PL-250 5 – 3

LOSS OF ECHO

A loss of echo condition occurs when no echo is received which exceeds the receiver detection threshold.

If the condition persists for a time beyond the limit as set by the Fail-Safe Timer (P-11), then an [F] will appearin the Status display and a default measurement, Failsafe High/Low (P-10), will immediately appear in theReading display.

Upon receiving an echo above the threshold, the loss of echo condition will be aborted and the measurementreading will advance to the current level at the rate as set by Damping (P-12).

The AiRanger IV is factory programmed to provide reliable echo detection for a wide variety of applicationconditions.

Transducer aiming is the most significant factor contributing to strong reliable echo reception and processing.

Where optimum transducer aiming has been achieved and loss of echo conditions persist refer to TROUBLESHOOTING.

ALARMS

The AiRanger IV is equipped with two alarm relays, which may be dedicated to any number of scan points upto the maximum supported by the system. The relay contact connections are available on the Terminal Boardat TB1-1,2,3,4,5 & 6.

Relays are in the energized state during non-alarm conditions, and in the de-energized state during alarmconditions. The corresponding Terminal Board LED, LD1 or LD2 illuminates when alarm relays are energized.

The high, low, high high, and low low alarm setpoints may be independently programmed for each scan point.The setpoints are always entered in the units as selected in P-1, referenced from the empty or zero level.

true echo(level)

end of transmit

false echo

blanking(P-05)

0level

empty distance to transducer(P-03)

range extension (P-27)as % of P-03

range

typical processed signal

typical receiver signal

ringing

PL-250 5 – 4

Setpoints cannot be entered in percent. If P-1=3 the measurement display shall be in percent but the relaysetpoints must be entered in the units selected.

When a multiple alarm condition occurs, the contact and display will correspond to the first sequential scanpoint that is in alarm. Once this is acknowledged (P-16), the next alarm will be displayed. A beeper providesaudible alarm indication. The beeper volume may be adjusted with potentiometer P1.

The relay operation hysteresis (deadband) is 5% of span. A high or high high alarm relay will de-energize atthe setpoint level and energize when the material level returns to 5% of span less than the setpoint level. Alow or low low alarm relay will de-energize at the setpoint level and energize when the material level returnsto 5% of span more than the setpoint level.

The alarm relay status may be overridden dependent upon P-16 programming.

The AiRanger IV alarm functions may be expanded by the addition of SAM-30 module(s) to the system. TheAiRanger IV serves as the host for alarm programming, alarm status display, and communicationtransmission to the SAM-30.

The optional SAM-30 module provides two relays, dedicated to each scan point in service, up to a maximumof 15 points per module. A total of 8 SAM-30 modules may be connected to one AiRanger IV to provide amaximum of 4 relays per scan point for 60 scan points total. Each relay may be programmed independently tooperate at a high, low, high high, or low low set point. Refer to instruction manual PL-274,Peripherals\SAM-30.

ANALOG OUTPUT

The AiRanger IV provides an isolated analog mA DC output, proportional to material level or space (P-6) atTerminal Board TB1-8&9. The output range is operator selectable for either 0 - 20 mA, or 4 - 20 mA for allpoints.

This output may, be assigned to any single point, represent a multipoint average, or be time shared betweenany number of scan points supported by the system.

When assigned to one scan point, the output retains the last updated value to provide a continuous outputwhile other points are being scanned.

When assigned to a number of scan points the output will vary, corresponding to the measurement results ofeach point scanned.

When multipoint averaging is selected (P-25) for all scan points, the mA output level is continuous andcorresponds to the average measurement of the scan points assigned.

The optional AO-15 module provides a continuous isolated output for each point up to a maximum of 15. TheAiRanger IV will support a maximum of 4 A0-15 modules for a total of 60 analog outputs. Refer to instructionmanual PL-274, Peripherals.

PL-250 5 – 5

APPLICATIONS

The AiRanger IV is designed primarily (however not restricted) to monitor long range, dry bulk solid, materiallevels. For multipoint applications where the odd liquid level monitoring requirement exists, the AiRanger IVmay be applied.

The following example illustrates the calibration procedure which would be utilized for a relatively basicmultipoint level measurement AiRanger IV application. This example certainly does not cover all of theprogramming features available, therefore the capabilities of the AiRanger IV should be fully understood, priorto actual application programming.

APPLICATION EXAMPLE

The AiRanger IV is required to monitor the level of grain in 22 silos 50 metres in height. LR-13 transducers,mounted such that the transducer face is even with the top of each silo, are to be utilized. A display of thecapacity utilization of each silo is desired.

An alarm is required should a silo be within 2 metres of full or empty. The maximum fill/empty rate is 1 metreper minute. Should a LOE (loss of echo) condition occur for more than 1 minute, the AiRanger IV mustassume a full silo and provide a high alarm indication.

With power on, in the program mode:

1. a) "SELECT PAR","0","1" UNITS b) "SELECT POINT","0","0" all scan points

c) "2","ENTER","3","ENTER" program in metres, display in %

2. a) "NEXT PAR" (P-2) PT.IN (1) OR OUT (2) OF SERVICEb) "NEXT POINT" scan point 1c) "1","ENTER" put into service

Repeat steps 2 b) and c) for all 22 points.

3. a) "NEXT PAR" (P-3) EMPTY DISTANCE TO TRANSDUCERb) "SELECT POINT","0","0" all scan pointsc) "5","0","ENTER" 50.0 metres

4. a) "NEXT PAR" (P-4) SPANb) "4","8",".","7","ENTER" 48.7 metres (see step 3c and 5b)

5. a) "NEXT PAR" (P-5) BLANKINGb) "1",".","3","ENTER" 1.3 metres (LR - 13 minimum)

6. a) "NEXT PAR" (P-6) MATERIAL (1) OR SPACE (2)b) "1","ENTER" current capacity utilized

7. a) "NEXT PAR" (P-7) FULL READING CHECKb) Observe displayed value "100.0" (percent of span)

PL-250 6 – 1

8. a) "NEXT PAR" (P-8) HIGH ALARM SETb) "4","8","ENTER" 48.0 metres from empty

9. a) "NEXT PAR" (P-9) LOW ALARM SETb) "2","ENTER" 2.0 metres from empty

10. a) "NEXT PAR" (P-10) FAILSAFE: HIGH(1),LOW(2),HOLD(3)b) "1","ENTER" (high level assumed on LOE)

11. a) "NEXT PAR" (P-11) FAILSAFE TIMER: MINUTESb) "1","ENTER" 1.0 minute after loss of echo

12. a) "NEXT PAR" (P-12) DAMPING RATE: % OF SPAN/MINUTEb) "2","ENTER" 2% of span/minute = 1 m/minute

Typically, the factory set damping of "100" can be used.

13. a) "NEXT PAR" (P-13) CONVERT DISPLAY b) "ENTER" 1.00 (factory setting, no change)

14. a) "NEXT PAR" (P-14) DECIMAL POINT LOCATION (0 - 3)b) "ENTER" 1 decimal place (factory setting)

15. a) "NEXT PAR" (P-15) ANALOG OUT:OFF(0),0-20(1),4-20(2)b) "ENTER" 0 = OFF (factory setting)

16. a) "NEXT PAR" (P-16) ALARM RELAYS ACKN. : (0)-NO(1)-YES(2)-NO (AUTO)(3)-YES (AUTO)

b) "ENTER" 1 = YES (factory setting)

All other parameters may be left at factory settings.

Place the AiRanger IV into the SCAN mode and remove the key to secure programming from inadvertentalteration.

STANDPIPE APPLICATION

In some solids and liquid applications it may be desirable to mount the transducer on a standpipe to gainaccess to the vessel.

This practice requires consideration of a number of application variables, with which Milltronics has attained ahigh level of expertise.

In such cases, consult Milltronics or your distributor prior to selecting a transducer or establishing vessel

standpipe specifications.

PL-250 6 – 2

PARAMETERS

In the program mode, the following parameters may be accessed, viewed and/or altered as required to tailorthe AiRanger IV operation to suit the specific application.

In the following parameter descriptions:

(F) indicates a factory set parameter value. The value will be appropriate in most cases, however may bealtered as required.

(G) indicates a global parameter. Scan point 00 must be displayed prior to alteration of the parameter value.

(V) indicates the parameter value may be viewed only.

Where desirable, scan point 00 may be utilized to enter the same parameter value for all points in service.

MEASUREMENT CALIBRATION PARAMETERS

PAR-01 UNITS (G)

Defines the UNITS of linear measure to be associated with the parameter values entered during the calibration procedure.

Unless otherwise altered by subsequent programming, the UNITS selected will also apply to the measurement reading.

option : 1 = feet (ft)2 = metres (m)3 = percent (%)

If measurement readings displayed as a percent of span are desired, enter option 3 only after entering option 1 or 2.

PAR-02 POINT IN/OUT OF SERVICE

Places the displayed point in or out of active service. Only those points placed in service are scanned.

option : 0 = out of service 1 = in service

If more than 30 points are to be put into service, select scan point 00 and enter option 1 to put all 60 points in service, then remove those points from service which are not required.

PL-250 7 – 1

PAR-03 EMPTY DISTANCE TO TRANSDUCER

Defines the distance in linear UNITS from the transducer face to the farthest material level to be measured to establish EMPTY.

PAR-04 SPAN

Defines the distance in linear UNITS from EMPTY to the highest material level to be measured to establish FULL.

PAR-05 BLANKING

Defines the zone immediately in front of the transducer face for which echoes will not be processed. Refer to FUNCTIONAL\ Blanking.

The minimum value is dependent upon the transducer series utilized :

The default (factory) value is dependent upon the operating frequency of the transceiver board installed.

PAR-06 MATERIAL OR SPACE (G)

Defines the type of measurement reading desired.

option : 1 = material (F)(distance from EMPTY to material level)2 = space (distance from FULL to material level)

PAR-07 FULL READING CHECK (V)

Displays the FULL measurement reading regardless of the actual material level. Use this feature to verify PAR- 03,04,05,06 parameter value entries will produce the results desired.

Transducer Blanking (min)Series Metres Feet

ST-25 0.6 2.0ST-50 0.6 2.0ST-100 0.9 3.0LR-21 0.9 3.0LR-13 1.2 4.0

PL-250 7 – 2

ENHANCED CALIBRATION PARAMETERS

PAR-08 HIGH ALARM

Defines the material level which will cause a high alarm condition. Refer to FUNCTIONAL\Alarms.

PAR-09 LOW ALARM

Defines the material level which will cause a low alarm condition. Refer to FUNCTIONAL\Alarms.

PAR-10 FAILSAFE

Defines the material level to be assumed, should a loss of echo condition occur. Refer to FUNCTIONAL\Loss of Echo.

option : 1 = high (FULL)

2 = low (EMPTY)3 = hold (hold display until echo is received)(F)

PAR-11 FAILSAFE TIMER

Defines the time delay between the initial loss of echo condition and the failsafe condition. If an echo is processed during this period, the failsafe condition is avoided.

range : 0.0 to 999.9 minutes, (F) = 0.0

PAR-12 DAMPING RATE

This value (entered as percent of span per minute) establishes the measurement reading and analog output maximum rate of change. Refer to FUNCTIONAL\Damping. The value entered should be higher than the maximum material level rate of change.

range : 0.0 to 999.9 % of span/min, (F) = 100.0

PAR-13 CONVERT DISPLAY

Defines the constant by which the measurement will be multiplied to convert the measurement reading. May be used to convert a measurement reading in percent (PAR-01\option 3) to read

the desired value.

PL-250 7 – 3

eg. If the height to volume relationship of the material is linear, and FULL (100%) = 333volume units, a value of 3.33 may be entered. The measurement reading will now be in the volume units.

range : 0.00 to 99.99, (F) = 1.00

PAR-14 DECIMAL POINT LOCATION (G)

Establishes the number of digits in the measurement reading which will appear to the right of the decimal point.

This parameter is normally used in conjunction with PAR-13 to prevent a reading display overflow condition (more than 4 digits in the measurement reading).

eg. If FULL (100%) = 10000 units, the measurement display would overflow at the FULL level. To avoid this, enter a a value of 10 in PAR-13 and 3 in PAR-14. Now the display will be in thousands of units. ie. FULL (100%) = 10.00 thousand units.

option : 0 = no decimal1 = 1 decimal place (F)2 = 2 decimal places 3 = 3 decimal places

PAR-15 ANALOG OUTPUT

Defines the range of the analog mA output for all points in service. Refer to FUNCTIONAL\Analog Output.

option : 0 = no output (F)1 = 0 - 20 mA2 = 4 - 20 mA

PAR-16 ALARM RELAYS ACKN. (G)

Defines the function of the "ACKN. ALARM" button. Refer to FUNCTIONAL\Alarms.

option : 0 = cease alarm indication, display next scan point in alarm condition (if applicable)1 = same as 0 except return relay contacts to non-alarm status (F)2 = same as 0, perform function after 30 seconds automatically3 = same as 1, perform function after 30 seconds automatically

PL-250 7 – 4

PAR-17 TVT START POINT

Defines the starting point of the TVT curve. Refer to TROUBLE SHOOTING\Advanced Calibration.

range : 00 to 99 (F = 60)

PAR-18 SLOPE/HOVER

Controls : » the slope angle for LARGEST, SLOPE, and AREA algorithms (PAR-19 = 1,2, and 3).

» the TVT curve hover level used for the FIRST algorithm (PAR-19 = 4).

Refer to TROUBLE SHOOTING\Advanced Calibration

range : 00 to 99 (F = 00)

PAR-19 ALGORITHM

Defines the type of echo processing technique to be utilized. Refer to TROUBLE SHOOTING\Advanced Calibration.

option : 1 = Largest (F)2 = Slope3 = Area4 = First

PAR-20 HIGH/HIGH ALARM

Defines the material level which will cause a high high alarm condition.

Refer to FUNCTIONAL\Alarms.

PAR-21 LOW/LOW ALARM

Defines the material level which will cause a low low alarm condition. Refer to FUNCTIONAL\Alarms.

PAR-22 CONFIDENCE THRESHOLD

Defines the level of confidence required for a received echo to be processed as the true echo. Applies if PAR-23 = 1, 4, 5, or 7 only. Refer to TROUBLE SHOOTING\Advanced Calibration.

range : 1 to 16 (F = 14)

PL-250 7 – 5

PAR-23 SCAN MODE (G)

Defines the type of scanning mode to be utilized. Refer to FUNCTIONAL\Scanning.

option : 1 = Smart 2 = Fast 3 = Fast Priority

4 = Mixed Priority5 = Smart Priority6 = Fast Express7 = Smart Express

To assign/remove a scan point on the priority scan loop (PAR-23 = 3, 4, 5, 6, or 7) with the front panel key switch in the SCAN position:

» press "SELECT POINT"» key in value (desired point number)» press "ACKN. ALARM"

To cause a specific point to be scanned next (PAR-23 = 1 or 2) with the front panel key switch in the SCAN position:

» press "SELECT POINT"» key in value (desired point number)

PAR-24 ASCII NULLS (G)

Defines the number of spaces to be placed between each message transmitted from the AiRanger IV over the bipolar current loop. The value entered will be dependent upon the time required by the device receiving these messages to process the data.

range : 00 to 99 (F = 00)

PAR-25 MULTIPOINT AVERAGING

Assigns the point displayed to be included in the multipoint average. The AiRanger IV analog mA output (Terminal Board TB1-8,9) will represent the average of all points assigned. The AO-15 analog mA outputs and the ANALOG OUTPUT TEST (PAR- 52) display are not affected by this parameter.

option : 0 = point not included in multipoint average (F)1 = point included in multipoint average

PL-250 7 – 6

PAR-26 TVT DYNAMIC START

Establishes whether the TVT START POINT (PAR-17) will be static (always remain at the same level) or dynamic (change with variable operating conditions)

option : 0 = off 1 = on (F)

PAR-27 RANGE EXTENSION

Extends the measurement range into the far end blanking zone. The value selected must be entered as a percent of PAR-03. Refer to FUNCTIONAL\Blanking.

range : 00 to 99 (F=20)

PAR-50 LAMP TEST (V)

All front panel LED’s, and LCD,s will flash. The Terminal Board LED’s will flash as the corresponding alarm relays are energized and de-energized.

PAR-51 SCANNER TEST (V)

All SM-15 LED’s will flash in sequence as the corresponding relays are energized and de- energized.

PAR-52 ANALOG OUTPUT

Displays the mA value of the most recent measurement when selected. The Terminal Board output (TB1 8,9) and the optional AO-15 output (for the point specified) will equal the test value entered.

If point number 00 is selected when entering the test value all AO-15 outputs will equal the test value entered.

range : 0.000 to 20.00 (F=0.00)

PAR-53 AIR TEMPERATURE (V)

Displays the current air temperature in degrees Celsius as measured by the temperature

sensor connected to the Terminal Board (TB1-10,11) connection.

PL-250 7 – 7

PAR-54 NOISE (V)

Displays the current receiver input noise in dB. The noise level includes electrical interference and acoustic noise detected by the transducer. Echo confidence suffers when excessive noise is present.

Ideally, this value should be 0 or less. A value of 20 or greater may be caused by improper

wiring or excessive acoustic noise generated during the vessel emptying and/or filling process.

PAR-55 MAX AIR TEMPERATURE (V)

Displays the recorded value of the maximum air temperature encountered, as measured by the temperature sensor. Press CLEAR, ENTER to reset. (F=20, with 9.56 K ohm resistor)

PAR-57 RAM TEST (V)

Displays "PASS", otherwise the faulty RAM address is displayed.

PAR-58 EPROM TEST (V)

Displays "PASS", otherwise the faulty EPROM address is displayed.

PAR-59 COMMUNICATION TEST (V)

Displays "PASS", otherwise "FAIL" is displayed, typically indicating a fault in communication

cable wiring or a peripheral device is not powered.

PAR-60 SOFTWARE REVISION (V)

Displays the revision level of the operational software stored in the EPROM.

PAR-61 TRANSMITTER TEST (V)

The Terminal Board transmit pulse indicator TRANSMIT NE1 will flash at a regular rate, otherwise a transducer cable and/or connection fault may exist.

PL-250 7 – 8

PAR-70 DEMONSTRATION (V)

Simulates normal operation utilizing internally generated readings for points 1 to 10, when the AiRanger IV front panel key switch is returned to the SCAN position.

The following parameters must be set prior to performing a demonstration :

» set PAR-01 to desired units (e.g. 1, feet)» set PAR-02 to place points 1 to 10 into service» set PAR-03 to desired EMPTY value (e.g. 100)» set PAR-04 to desired SPAN value (e.g. 100)» select PAR-70 and press ENTER» switch to the scan mode

The scan points in service will be assigned the following values :

The values assigned to the scan points during the demonstration will be overwritten when actual measurements are processed.

POINT STATUS READING

01 10.002 100.003 LL 3.304 H 172.005 F 204.706 16.007 F 4.008 L 0.009 FH 172.010 F 60.0

PL-250 7 – 9

TROUBLESHOOTING

There are numerous adjustments for echo processing and they should be used judiciously.

Transducer location and aiming are the most important factors affecting the reliability of the AiRanger IV.

TROUBLESHOOTING TIPS

SYMPTOM CAUSE ACTION

Display blank, » loss of power » check power wiringTerminal Board NE1 jumpers and fusesnot flashing

Fail-safe, "F" » open circuit » check transducerdisplayed, Terminal transducer cable wiringBoard NE1 flashing,

transducer not pulsing » defective transducer » check PAR-55or AiRanger IV » try a substitute transducer

Fail-safe, "F" » short circuit » check transducer displayed,Terminal transducer cable wiringBoard NE1 not flashing, transducer » defective transducer » check PAR-55 not pulsing or AiRanger IV » try a substitute transducer

Fail-safe, "F" » level or target out » check transducerdisplayed, Terminal of range specificationBoard NE1 flashing, » check parameters transducer pulsing

» application too dusty » re-aim transducer,or steamy; under refer to Installationthese conditions » use foam facedrange may be transducer for dusty

adversely affected applications,

do not use foam face forwet applications

» if condition only » increase fail-safeoccurs during timer, PAR-11 filling

PL-250 8 – 1

» transducer face » inspect and clean, check that covered shipping cardboard is removed

» bad transducer location » move transducer to or aiming better location» poor installation» moved by material » re-locate and/or or vibration re-aim transducer» flanging not level

» wrong echo » re-locate and/or

processed; ie. re-aim transducerstructural member or vessel wall, stationary » refer to Troubleshootingagitator, material hang-up \ Advanced Calibrationor rat-tailing

Reading does not » transducer ringing, » transducer must not change, but level does reading high level contact metal

» transducer mountingtoo tight, hand tighten only

Reading error » lack of temperature » install temperature progressively worsens compensation sensor(s) with distance

Reading erratic » low echo confidence » check transducer aiming

» check noise, PAR-54 » refer to Troubleshooting\

Advanced Calibration

» material filling » re-locate and/or re-aimtransducer increase damping, PAR-12

» electrical noise » transducer cable must be in grounded metal conduit

» liquid surface » increase damping, agitated PAR-12

Reading "EEEE" » reading too large » reduce conversion, PAR-13

» reduce decimal point, PAR-14

Reading response slow » damping to high » reduce damping, PAR-12

» wrong scan mode » select alternate mode, PAR-23

PL-250 8 – 2

ADVANCED CALIBRATION

The AiRanger IV utilizes advanced echo processing techniques to ensure only the true echo is utilized toprovide the measurement reading. All echo processing parameters are factory set to ensure consistent,reliable measurement is achieved for a wide variety of operating conditions.

HOLD MEASUREMENTS

When assessing the current transducer location, aiming, and/or the echo processing parameter settings, it isoften desirable to have the AiRanger IV hold the reading after making a measurement.

With the AiRanger IV power on, set the front panel key switch to the HOLD position:

select the scan point desired

press "."

The AiRanger IV will take 1 to 16 measurements (shots) and then display the reading and status for the scanpoint selected.

TRANSDUCER LOCATION AND AIMING

Transducer location and aiming are the most significant factors contributing to reliable echo reception andprocessing.

The following parameters may be accessed when the AiRanger IV front panel key switch is in the HOLDposition to assess the current transducer location and aiming.

TEMPERATURE (V)

Displays the current air temperature in degrees Celsius as measured by the temperature sensor connected tothe Terminal Board (TB1-10,11) connection. (Same as PAR-53 in the PROG. mode.)


press "NEXT PAR" and then "8"

press "CLEAR" to return to the normal display.

PL-250 8 – 3

NOISE (V)

Displays the current receiver input noise in dB, referenced to 1 microVolt RMS at the transducer. (Same asPAR-54 in the PROG. mode.)



press "CLEAR" to return to the normal display.

CONFIDENCE (V)

Displays the confidence level associated with a hold measurement. This value indicates the likelihood theportion of the echo profile which was selected and processed, is indeed the true echo. A strong echo shouldhave a confidence level of 20 to 40.

Check the confidence level each time the transducer is moved or the aiming is adjusted and a new holdmeasurement is taken. Leave the transducer in the position which provided the highest confidence.


press "CLEAR" to return to the normal display

ECHO PROCESSING DISPLAYS

The AiRanger IV oscilloscope output produces a number of operator selectable displays which may beutilized to determine the advanced calibration parameter alteration required. Each display may be viewedalone, or in combination with other displays simultaneously.

To view these displays connect an oscilloscope to the AiRanger IV I/O board as follows :

Typical oscilloscope settings for viewing the echo processing signals are :

gain : 1V/div.

sweep : 2 msec/div.

All displays (except for the Time Scale display) are shown at 10 times the actual oscilloscope sweep setting. Ifthe sweep setting is 2 msec/div, one sweep division represents 20 msec in time.

SCOPE LOCATION DESCRIPTION

probe J4 echo processing signalsexternal trigger J1 scope synchronization

ground J2 ground

PL-250 8 – 4

The echo profile is automatically displayed each time a hold measurement is taken.

To view the other echo processing displays, while pressing the "ACKN. ALARM" button, press the buttonindicated in the following chart to turn the desired display on or off.

DISPLAY TIME SCALE ECHO MARKER TVT CURVE ECHO PEAKS ECHO SLOPES

ON "0" "1" "2" "3" "4"

OFF "5" "6" "7" "8" "9"

The Echo Profile display represents the acoustic energy received by the transducer. The amplitude of theecho profile is also affected by acoustic and/or electrical noise.

The Time Scale display is used to determine the time lapse between the transmit pulse and a specific pointon the Echo Profile.

The Echo Marker display indicates the point on the Echo Profile which has been selected as the true echo bythe AiRanger IV. The size of the Echo Marker is proportional to the echo confidence.

The TVT (Time Varying Threshold) Curve display represents the level in dB, below which all accoustic energyreceived will be ignored, if PAR-19 = 1,3, or 4. This display is not applicable if PAR-19 = 2.

The Echo Peaks display indicates the portion(s) of the Echo Profile which exceeded the TVT Curve. Thisdisplay is not applicable if PAR- 19 = 2.

The Echo Slopes display indicates all echo profile peaks intersected by the slope which originated from the tipof the previous peak, or the TVT start point. This display is not applicable if PAR-19 =4.

40

20

0

db

-20

transducerringing bin wall

reflections trueecho

echomarker

25 50 75 100 125 150 175m sec

60

PL-250 8 – 5

ECHO PROFILE MEMORY

Up to 3 echo profiles and corresponding echo processing displays can be stored in the AiRanger IV memory.The displays may be retrieved to compare the effects of transducer aiming adjustments or echo processingparameter alterations.

To store a set of echo processing displays, in the HOLD mode:

press "SELECT PAR" and then "1" (memory 1), or

press "SELECT PAR" and then "2" (memory 2), or

press "SELECT PAR" and then "3" (memory 3)

To recall a set of echo processing displays, in the HOLD mode:

press "NEXT PAR" and then "1" (memory 1), or

press "NEXT PAR" and then "2" (memory 2), or

press "NEXT PAR" and then "3" (memory 3),

When an new echo profile is stored in a memory, the previously stored profile (if any) is overwritten. Similarly,when a stored echo profile is recalled, the previously displayed profile is overwritten.

The profile memory is not affected by a power interruption, if the battery is installed in the CPU board.

ECHO PROCESSING PARAMETERS

Under severe operating conditions it may be necessary to alter one or more echo processing parametersettings to tailor the AiRanger IV echo processing techniques to suit the particular application.

Take a hold measurement. Observe the Echo Profile and applicable Echo Processing Displays. After eachecho processing parameter alteration is made, press "." once to reprocess the original hold measurement. Ifattempts to use the particular parameter are not successful, return the parameter to the factory setting prior to

altering another echo processing parameter.

TVT START POINT

Defines the starting point of the TVT Curve in dB above 1 microVolt. (Same as PAR-17 in the PROG. mode.)The TVT Start Point may be adjusted up or down as desired to cause the portion of the echo profile whichrepresents the true echo to exceed the TVT Curve.

If the TVT Dynamic Start parameter (PAR-26 in the PROG. mode) is set to 1, the TVT Start Point will start atthe set value and then vary up or down each time a measurement is taken, until a portion of the Echo Profileexceeds the TVT Curve. If PAR-26 is set to 0 the TVT Start Point will remain fixed at the set value.

PL-250 8 – 6

The following methods may be used to set the TVT Start Point value from the HOLD mode:

Manual : select the desired scan point

press "SELECT PAR" and then "7", the TVT Start Point value is displayed in theREADING field

key in the desired value and press "ENTER", the new TVT Start Point is now stored

Automatic : select the desired scan point

press "SELECT PAR" and then "7", the TVT Start Point value is displayed in the READING field

press "CLEAR" and then "." and then "ENTER", the AiRanger IV selects and stores the value

It is advisable to take a hold measurement to monitor the Echo Profile and TVT Curve displays as well as theEcho Confidence level before and after making a TVT Start Point adjustment.

Typical TVT Start Point values are :

» 40 dB for ST series transducers

» 60 dB for LR series transducers

range : 1 to 99 (F = 60)

SLOPE/HOVER

Defines the angle of declination of the slopes used (PAR-19 = 1, 2, or 3) or the hover level (amount the TVTCurve exceeds the averaged echo profile) to ensure the portion of the echo profile which represents the trueecho is processed. (Same as PAR-18 in the PROG. mode.)

To alter this value from the HOLD mode :

select the desired scan point

press "SELECT PAR" and then "8", the current value is displayed in the READING field

key in the desired value and press "ENTER", the new value is now stored

range : 00 to 99 (F = 00)

PL-250 8 – 7

ALGORITHM

Defines the type of echo processing technique utilized to ensure the portion of the echo profile whichrepresents the true echo is processed. (Same as PAR-19 in the PROG. mode)

To alter this value from the HOLD mode :

» select the desired scan point» press "SELECT PAR" and then "9", the current option is displayed in the READING field» key in the desired value and then press "ENTER", the selected option is now stored

options : 1 = Largest (F)2 = Slope3 = Area4 = First

Largest (Option 1)

This algorithm should be used when the vessel is narrow and deep. In this case, echoes return not only fromthe material level, but also from rough vessel walls or obstacles, such as ladders, near the vessel wall.

The portion of the Echo Profile which exceeds the TVT Curve by the greatest amplitude will be processed asthe true echo. If the slope level (P18) is greater than 00, the resultant peak with the greatest rise above theprevious slope intersection point is selected as the true echo.

slopes

true echo

TVT curve

echo marker

TVT Start Point(PAR - 17)

PL-250 8 – 8

Slope (Option 2)

This algorithm may be utilized if the result of using the Largest algorithm is unsatisfactory.

In this case the TVT Curve is not utilized. The Echo Profile peak with the greatest rise above the previousslope intersection point is selected as the true echo.

Area (Option 3)

This algorithm may be utilized if the material level has a large angle of repose. In this case, the portion or theecho profile exceeding the TVT Curve with the greatest area is processed as the true echo. If the slope level(P18) is greater than 00, the resultant area with the greatest rise above the previous slope intersection point isselected as the true echo.

true echo

start point( P-17 )

echo profile

echo marker

slopes

TVT curve

echo marker

slopes

TVT startpoint

( P-17 )echo profile

PL-250 8 – 9

First (Option 4)

This algorithm may be used if the AiRanger IV is utilized to monitor the level of a liquid. In this case, when thelevel is near the transducer, multiple echoes may be received. The first portion of the Echo Profile whichexceeds the TVT Curve is processed as the true echo regardless of amplitude or area. If the Hover (P-18)level is greater than 00, the first peak exceeding the TVT Curve + Hover Level is processed as the true echo.

CONFIDENCE THRESHOLD

This parameter (PAR-22) may only be accessed in the PROG. mode and is applicable only if PAR-23 = 1, 4,5, or 7.

The value entered determines the number of shots the AiRanger IV will take (dependent upon the EchoConfidence) prior to updating the measurement.

If the Echo Confidence required is not achieved after 1 shot, and the Echo Confidence required is notachieved after 4 shots, the AiRanger IV will take 16 shots. If after 16 shots, the Echo Confidence required isnot achieved the measurement is not updated.

range : 1 to 16 (F = 14)

TVTcurve

true echo

multipleechoes

echo marker

hover(P 18)

TVT startpoint (P 17)

PL-250 8 – 10

CONFIDENCE ECHO CONFIDENCE REQUIRED AFTERTHRESHOLD 1 SHOT 4 SHOTS 16 SHOTS

1 30 20 62 24 24 83 24 16 64 24 12 85 40 24 126 40 24 87 30 18 108 30 18 89 20 12 8

10 16 10 611 12 8 612 9 6 513 24 12 414 18 9 415 16 8 316 16 8 2

PL-250 8 – 11

GLOSSARY

beam angle : » the angle between the opposing one-half power limits (-3dB) of the sound beam.

blanking : » the zone in which received echoes are ignored.

EPROM : » erasable programmable read only memory.

LCD : » liquid crystal display.

measurement : » each time a transmit pulse or set number of transmit pulses are sent to the transducer.

ringing : » the inherent nature of the transducer to continue vibrating after the transmit pulse has ceased.

ullage : » the remaining spatial volume of a vessel, or the volume of material required to fill a vessel.

PL-250 9 – 1

ALPHABETICAL PARAMETER LISTING

PARAMETER #

Air Temperature PAR-53Alarm Relays Ackn. PAR-16Algorithm PAR-19Analog Output PAR-15Analog Output Test PAR-52ASCII Nulls PAR-24Blanking PAR-05Communication Test PAR-59Confidence Threshold PAR-22Convert Display PAR-13Damping Rate PAR-12Decimal Point Location PAR-14Demonstration PAR-70

Empty Distance to Transducer PAR-03EPROM Test PAR-58Fail-Safe High/Low PAR-10Fail-Safe Timer PAR-11Full Reading Check PAR-07High Alarm PAR-08High/High Alarm PAR-20Lamp Test PAR-50Low Alarm PAR-09Low/Low Alarm PAR-21Material or Space PAR-06Max Air Temperature PAR-55Multipoint Averaging PAR-25Noise PAR-54Point In/Out of Service PAR-02Ram Test PAR-57Range Extension PAR-27Scan Mode PAR-23Scanner Test PAR-51

Slope/Hover PAR-18Software Revision PAR-60Span PAR-04Transmitter Test PAR-61TVT Dynamic Start PAR-26TVT Start Point PAR-17Units PAR-01

PL-250 9 – 2

MAINTENANCE AND SPARE PARTS

MAINTENANCE

The AiRanger IV requires very little maintenance. However, a program of periodic preventative maintenanceshould be initiated. This should include regular inspection, general cleaning and good house keepingpractices.

Enclosures and circuit boards should be cleaned only when the power is disconnected at the main breaker,using a vacuum cleaner and a clean dry paint brush. Check all electrical contacts for signs of corrosion and orarcing.

The memory back-up battery (CPU board) must be replaced every year to prevent memory loss in the eventof a power interruption.

» ensure POWER is OFF

» open the AiRanger IV front cover

» remove the Transceiver and I/O boards

» flip the PS-10 POWER switch ON

» replace the CPU board battery

» flip the PS-10 POWER switch OFF

» re-install the Transceiver and I/O boards

Circuit boards should never be removed or re-installed in an AiRanger IV w ith the power ON.

SPARE PARTS

ITEM DESCRIPTION ORDER NUMBER

Battery 20200020Fuse, 2A, Fast-Act 22550030Fuse, 1A, Slo-Blo 22550085Relay, PS-10 25000135

PS-10, Power Supply Board 51012521Terminal Board 51012421Back Plane Board 51012431Transceiver Board, 13 KHz 51012501Transceiver Board, 22 KHz 51012502Transceiver Board, 41 KHz 51012503I/O Board 51012441CPU Board 51012511Display Board 51012411

PL-250 9 – 3

ERROR MESSAGES

DISPLAY MESSAGE

Er 1 Invalid scan point number

Er 2 Invalid parameter number

Er 3 Global parameter (scan point number must be 00)

Er 4 PAR-01 (Units) not entered

Er 5 PAR-05 (Blanking) too low

Er 6 PAR-07 (Full Reading Check) entry not permitted

Er 7 Essential parameter value missing

Er 8 Not Applicable

Er 9 PAR-17 (TVT Start Point) point 00 not permitted

Er10 PAR-17 (TVT Start Point) automatic setting failed:

» Vessel is full, reduce material level

» Strong close-in echo, reduce material level

» No transducer connected, check wiring

» Blanking (PAR-05) too high

» Transceiver not working

Er11 PAR-02 (Point In/Out of Service) must be 0 or 1

Er12 PAR-01 (Units) must be 1, 2, or 3

Er13 PAR-06 (Material or Space) must be 1 or 2

Er14 PAR-10 (Fail-Safe High/Low) must be 1, 2, or 3

Er15 PAR-14 (Decimal Point Location) must be 0, 1, 2, or 3

Er16 PAR-15 (Analog Output) must be 0, 1, or 2

Er17 PAR-16 (Alarm Relays Ackn.) must be 0, 1, 2, or 3

Er18 PAR-17 (TVT Start Point) must be 0 to 99

Er19 PAR-18 (Slope/Hover) must be 0 to 99

Er20 PAR-08 (High Alarm) too high

Er21 PAR-08 (High Alarm) too low

Er22 PAR-09 (Low Alarm) too high

Er23 PAR-05 (Blanking) too high

Er24 PAR-19 (Algorithm) must be 1, 2, 3, or 4

Er25 PAR-20 (High/High Alarm) too high

Er26 PAR-20 (High/High Alarm) too low

Er27 PAR-21 (Low/Low Alarm) too high

Er28 PAR-22 (Confidence Threshold) must be 1 to 16

Er29 PAR-23 (Scan Mode) must be 1 to 7

EEEE Display Overrange (Convert Display, PAR-13, too high)

PL-250 9 – 4

PROGRAM LOG

PL-250 9 – 5

PL-250

Program Log not included in 'Soft Manual'

PROGRAM LOG

PL-250 9 – 6

PL-250

Program Log not included in 'Soft Manual'.

COMMUNICATION

The AiRanger IV is capable of communicating data over a +/- 20 mA current loop. The maximum data looplength is 3000 m (10000 ft).

Utilizing Simplex communication convention, messages are transmitted on a regular basis. The AiRanger IVis also capable of receiving certain request messages, however these messages will not invoke a responsemessage.

The AiRanger IV data loop (Terminal Board TB1-3,4,5,and 6) may be connected directly to AiRanger IVperipherals also designed for serial communication. Refer to instruction manual PL-274, Peripherals forinterconnection diagrams for the following devices:

» AO-15 Analog Output Module» SAM-30 Satellite Alarm Module» RSM-60 Remote Scanning Monitor» SPD Single Point Display

For connection to a host computer or programmable logic controller, a BIC-II buffered interface convertermust be utilized to convert the data to the RS-232 or RS-422 format required by the host device. Refer toinstruction manual PL-371, BIC-II.

PROTOCOL

Communication Protocol refers to the format, sequence, and value of the data fields utilized in serialcommunication messages.

AiRanger IV messages consist of a number of data fields containing byte(s) in ASCII binary code format:

Idle = Mark = Logic 1 = +20 mA

Space = Logic 0 = -20 mA

» 7 data bits

» even parity

» 1 stop bit

s 1 2 3 4 5 6 7 p st s n r t t t t a ta t d d h h h h r or i pt t

y

0

- 20 mA

+ 20 mA

PL-250 9 – 7

BAUD RATE

The baud rate of all communicating devices must be the same. The baud rate of the AiRanger IV is set viaswitch SW-1 on the I/O board. The desired baud is selected by " closing " the corresponding switch segment,all others open.

sw-1 baud4 3003 12002 24001 9600

e.g. 9600 baud

The following baud rates are also available by installing a jumper in the appropriate I/O board location, allswitch segments are set in the "OPEN" position.

jumper baudJ5 75

J6 150 J7 600J8 4800

Each byte represents an ASCII hexadecimal value which is equivalent to an ASCII character.

The ASCII character transmitted will be equal to the true hexadecimal value the AiRanger IV derived from atrue binary processing result.

e.g. if the AiRanger IV true binary processing result = 0100the true hexadecimal value = 4

then the ASCII binary byte transmitted = 011 0100whose ASCII hexadecimal value = 34 whose ASCII character equivalent = 4

DATA FIELD DESCRIPTIONS

The following data fields are utilized in AiRanger IV messages.

SOM

AiRanger IV start-of-message, ASCII character = STX.

MT (Message Type)

Identifies the type of message, ASCII values :

00 = Measurement01 = Not In Scan Mode03 = Point Not in Service10 = Scan Specific Point11 = Acknowledge Alarm 12 = Priority Loop Assignment13 = Priority Loop Removal

99 = Process Identical Message

94/09/19PL-250 9 – 8

POINT

Identifies which AiRanger IV scan point the message pertains to, ASCII values : 001 to 060.

READING

Contains the measurement value in the engineering units of measure selected during AiRanger IVprogramming. ASCII characters: 0000 to 9999, DDDD if point is out of service, or EEEE for overflow.

STATUS A

The ASCII character (0 to F) represents the true hexadecimal value derived from the true binary code.

MSB LSBFor the true binary code ####

On Priority LoopNew Reading (Not due to MT10)Scanned Once

In Service

STATUS B



Fail-safe Timer ExpiredLost Echo FillingDamping

STATUS C



Low/Low AlarmLow AlarmHigh AlarmHigh/High Alarm

PL-250 9 – 9

STATUS D



Low/Low Acknowledged

Low AcknowledgedHigh AcknowledgedHigh/High Acknowledged

STATUS E

Identifies the current condition of the AiRanger IV RAM back-up battery status.

ASCII value : 0 = Battery Good8 = Battery Low

STATUS F

Identifies the decimal point location associated with the Reading field value.

ASCII value : 0 = No Decimal1 = 1 Decimal Place2 = 2 Decimal Places3 = 3 Decimal Places

CONFIDENCE

Identifies the confidence level associated with the Reading field value.

ASCII value : 00 to 99

ANALOG

Contains ASCII characters corresponding to the true hexadecimal value representative of the analog outputlevel. The decimal equivalent of this hexadecimal value is equal to the number of analog output counts.204.75 counts = 1 ma

eg ASCII characters = 7FFdecimal equivalent = 2048analog output = 2048 counts x 1mA/204.75 counts = 10.0 mA

ASCII value : 000 to FFF

PL-250 9 – 10

EOM

AiRanger IV end-of-message, ASCII character = CR

MESSAGE TYPES

The following messages are utilized for AiRanger IV communication. The examples include ASCII characters

for presentation purposes only. The actual characters will be dependent upon the specific application.

MT00 - MEASUREMENT

This message, consisting of 22 bytes, is transmitted from the AiRanger IV after a point is scanned.

Data ASCII Example Field Character Description

SOM STX start of message

MT 00 measurement reading

POINT 037 from scan point 37

READING 1278 1278

STATUS A E in service,scanned once,new reading,not priority

STATUS B 4 vessel is filling

STATUS C 8 point is in high/high alarm

STATUS D 8 alarm was acknowledged

STATUS E 0 battery is good

STATUS F 1 decimal point is one digit from right

CONFIDENCE 27 confidence is 27

ANALOG 7FF analog output is 10.0 mA

EOM CR end of message

MT01 - NOT IN SCAN MODE

This message, consisting of 4 bytes, is transmitted from the AiRanger IV when the front panel key switch isswitched away from SCAN.

Data ASCII ExampleField Character Description


MT 01 not in scan mode


PL-250 9 – 11

MT03 - POINT NOT IN SERVICE

This message, consisting of 7 bytes, is transmitted from the AiRanger IV for each point which is not in service,when the front panel key switch is switched to SCAN.



MT 03 point not in service

POINT 060 scan point 60


MT10 - SCAN SPECIFIC POINT

This message, consisting of 7 bytes, may be transmitted to the AiRanger IV from an RSM-60 or host device,to cause the point specified to be scanned next. After the specified point is scanned, the normal scanningsequence will resume.

This message is only applicable when PAR-23 = 1 or 2.



MT 10 scan the point specified next



MT11 - ACKNOWLEDGE ALARM

This message, consisting of 7 bytes, may be transmitted to the AiRanger IV from an RSM-60 or host device,to acknowledge an alarm. Upon receiving this message the AiRanger IV will scan the point specified next.



MT 11 acknowledge alarm



PL-250 9 – 12

MT12 - PRIORITY LOOP ASSIGNMENT

This message, consisting of 7 bytes, may be transmitted to the AiRanger IV from the RSM-60 or host device,to cause the point specified to be assigned to the priority scan loop. Refer to FUNCTIONAL\Scanning.

This message is only applicable if PAR-23 = 3, 4, 5, 6, or 7. Upon receiving this message the AiRanger IV willscan the point specified next.



MT 12 assign point to priority scan loop



MT13 - PRIORITY LOOP REMOVAL

This message, consisting of 7 bytes, may be transmitted to the AiRanger IV from the RSM-60 or host device,to cause the point specified to be removed from the priority scan loop. Refer to FUNCTIONAL/Scanning.

This message is only applicable if PAR-23 = 3, 4, 5, 6, or 7.



MT 13 remove point from the priority scan loop



MT99 - PROCESS IDENTICAL MESSAGE

This message, consisting of 4 bytes, may be transmitted to the AiRanger IV from a host device, to cause theAiRanger IV to process a message identical to the previously received message.

If this message is not transmitted to the AiRanger IV between successive identical messages, all subsequentidentical messages received are ignored.

e.g. 1 MESSAGE OPERATION

MT10 (point 1) point 1 scanned nextMT10 (point 1) message ignored

PL-250 9 – 13

e.g. 2 MESSAGE OPERATION

MT10 (point 1) point 1 scanned nextMT99 process the following identical messageMT10 (point 1) point 1 scanned again



MT 99 process next message, identical to last message


PL-250 9 – 14

ASCII/HEXADECIMAL/BINARY CONVERSION CHART

ASCII ASCII ASCII TRUE TRUECHARACTER HEXADECIMAL BINARY HEXADECIMAL BINARY

. 27 0101110 - - - - - - - -0 30 0110000 - - - - - - - -1 31 0110001 0 00002 32 0110010 1 00013 33 0110011 2 00104 34 0110100 3 00115 35 0110101 4 01006 36 0110110 5 01017 37 0110111 6 01108 38 0111000 7 01119 39 0111001 8 1000A 41 1000001 9 1001B 42 1000010 A 1010C 43 1000011 B 1011D 44 1000100 C 1100E 45 1000101 D 1101F 46 0000110 E 1110

STX 02 0000010 F 1111CR 0D 0001101 - - - - - - - -LF 0A 0001010 - - - - - - - -

. = decimal point

STX = start of text

CR = carriage return

LF = line feed

- - - - = not applicable

PL-250 9 – 15

AIR

AN

GE

R IV

AIR

AN

GE

R IV

19.1

mm

(.75

")

508

mm

(20"

)

254

mm

(10"

)

406

mm

(16"

)

(4) m

ou

ntin

g sl

ot, 7

x12

mm

(0.2

6x0.

5 ")

203

mm

(8")

SM

-15

(opt

iona

l)

364

mm

(14.

75")

178

mm

(7")

457

mm

(18"

)

610

mm

(24"

)

(4) m

ount

ing

hole

s 1

1 m

m (

0.44

") d

ia

76

2 m

m(3

0")

686

mm

(27"

)

(4) m

ou

ntin

g ho

les

11 m

m (0

.44"

) di

a.

533

mm

(21"

)

SM

-15

(opt

iona

l)61

0 m

m(2

4")

(4)

mo

unt

ing

hole

s9

mm

(.3

75")

dia

.

20

3 m

m(8

")

19.

1 m

m(.

75")

PL-250

AiRanger-4 Outline & Mounting Fig. 1, p.10-1

LR SERIES TRANSDUCER OUTLINE AND WIRING

1" NPT

A

B

NOTES :- Do not route cable in open raceways.

- Cable length : - standard: 4.5 m ( 15’ ) - optional: consult Milltronics

- Radiating surface is polyethylene and styrofoam.

- Cable must be run in a grounded metal conduit with no other cabling (except temperature sensor cable). Ground shield only at AiRanger IV. Insulate shield at junctions to prevent inadvertent grounding.

- Transducer wiring must be done in conjunction with approved conduit, boxes and fittings and to procedures in accordance with all governing regulations.

- For a single point interconnection, refer to FIG. 10. For multipoint interconnection, refer to instruction manual PL-274 Peripherals \ SM15.

FIG. 2

SHLD

HOT

terminal blockin junction box

red (hot)

black

to approved ground ofjunction box and conduit

green

transducercable

TB1

RG62U cable

AiRanger IV

Transducer interconnection with local junction box

shield

hot

shield

A B

LR - 21 267 mm ( 10.5" ) 178 mm ( 7.0" )

LR - 13 356 mm ( 14" ) 230 mm ( 9.0" )

PL-250 10 – 2

152 mm( 6.0" )nominal

23 mm( 0.9" )

mounting holes 13 mm ( 0.5" ) dia.( 3 places )

51 mm( 2.0" )

radiating face

284 mm( 11.2" )

102 mm( 4.0" )

1/2 " NPT internal thread

229 mm( 9.0" )

SHLD

HOT

terminal block injunction boxred (hot)

black

to approved ground of junctionbox and conduit

green

transducercable

RG62U cable

AiRanger IV

Transducer interconnect ion with lo-cal junction box

shield

hot

shield

TB1

NOTES :- Do not route cable in open raceways

- Cable length: - standard: 4.5 m ( 15’ ) - optional: consult Milltronics

- Radiating surface : standard : - polyurethaneoptional : - CPVC for corrosive applications

- Teflon ( flanged ) for highly corrosive applications- polyethylene foam for dusty, noncondensing applications

- Cable must be run in a grounded metal conduit with no other cabling (except temperature sensor cable). Ground shield at AiRanger IV only. Insulate shield at junctions to prevent inadvertent grounding.

- Transducer wiring must be done in conjunction with approved conduit, boxes and fittings and to procedures in accordance with all governing regulations.

- For a single point interconnection, refer to FIG. 10 . For multipoint interconnection, refer to instruction manual PL-274, Peripherals \ SM-15.

- Refer to FIG. 7 for mounting details.FIG. 3

ST-100 SERIES TRANSDUCER OUTLINE AND WIRING

PL-250 10 – 3

radiatingsurface

120 mm(4.7")

84 mm(3.3") dia.

STANDARD ST-25 TRANSDUCER

1" NPT

cable

ST-25/50 SERIES TRANSDUCER - OUTLINE AND WIRING

cable

radiatingsurface

STANDARD ST-50 TRANSDUCER

140 mm(5.5")

125 mm(4.9")

1" NPT

1" NPT

ST-25 120 mm (4.7")or

ST-50 125 mm (4.9")

Dia. A radiatingsurface

cable

bolt hole

25 mm(1")

factory bondedassembly

Dia. B

FLANGED MOUNTED ST-25 or ST-50 TRANSDUCER

SHIELD

HOT

CONNECTION VIA CUSTOMERJUNCTION BOX

transducercable

RG-62Ucoaxial cable

blackwhite

shield hot

AiRanger IV(note 6)

Notes: 1. Do not route cable openly in raceways.

2. Cable length: › standard: › 1m ( 3’ )› optional: › consult Milltronics

3. Radiating surface: › standard: › polyurethane› optional: › polyethylene, for dusty, non-corrosive, non-condensing applications

› CPVC, for corrosive applications› telfon (flanged), for highly corrosive applications

4. Cable must be run in a grounded metal conduit with no other cabling (except temp. sensor cable). Ground shield only at AiRanger IV. Insulate shield at junctions to prevent inadvertent grounding.

5. Transducer wiring must be done in conjuction with approved conduit, boxes and fittings and to procedures in accordance with all governing regulations.

6. For single point interconnection, refer to FIG. 10. For multipoint interconnection, refer to manual PL-274, Peripherals\SM-15.

Dimensions are to North American standards.Optional dimensions to European and Asians standardsare also available.* Minimum flange size for ST-50 transducer.

Flange Size Dia. A Dia. B Holes Holes (dia.)

mm inch mm inch mm inch mm inch

102 4 191 7.5 229 9 8 19 3/4

*152 6 241 9.5 279 11 8 22 7/8

203 8 299 11.75 343 13.5 8 22 7/8

305 12 432 17 483 19 12 22 7/8

FIG. 4PL-250 10 – 4

TEMPERATURE SENSOR OUTLINE AND WIRING

305 mm( 12 " )

3/4 " NPT

21 mm( 0.8 " )

dia.

227 mm( 9 " )

13 mm( 0.5 " )

dia.

3/4 " NPT

1/4 " NPT60 mm( 2.3 " )

41 mm( 1.7 " )

dia.

1" NPT

TS-2CPVC plastic

LTS-1 LTS-1C304 Stainless Steel

1/2 " NPT

CSAFM, BASEEFA

NOTES :

1. The temperature sensor should be mounted in a location which represents the temperature fluctuationslikely to occur between the transducer and the target. To avoid false readings, mount the sensor out of direct sunlight. Radiant heating can cause a significant differential between air and sensor temperatures.

2. Remove the 9.53 K Ω resistor from terminal board TB1-10, 11 prior to making the temperature sensor connection.

3. Temperature sensor cable can be run with transducer cable in a grounded metal conduit. Ground shield only at AiRanger IV. Insulate shield at junctions to prevent inadvertent grounding.

4. Temperature sensor wiring must be done in conjunction with approved conduit, boxes and fittings and to procedures in accordance with all governing regulations.

5. Cable lengths : - standard : 1 m ( 3’)- optional : consult Milltronics

6. For single point interconnection refer to FIG. 10. For multipoint interconnection, refer to instruction manual, PL-274, Peripherials \ SM-15. FIG. 5

SHLD

WHT

BLK BLK

WHT

SHLD

BLK

SHLD

6 7 8

TB1

WHT

sensor cable

toAiRanger IV

(Beldon 8760)

customer’s junction boxAiRanger IV

board BTB1

Temperature Sensor Wiring

PL-250 10 – 5

FIG. 6A

TRANSDUCER MOUNTING

EASY AIMER KIT

0

0 330

300

27

024

0

210

180150

120

90

60

30

conduit clamping screws ( 1/4" - 20 x 1/2" ),use 1/8" allen key to adjust

transducer direction 0° to 360°

sighting block binding screws

angle block binding screws

transducer angle 0° to 20°

mounting holes - 3 places 11 mm ( 7/16 " ) dia. on 157 mm( 6.2 " ) bolt centre dia.

angle block

sighting block

mounting block

3/4 " x 1 "reducing coupling

transducer (sold seperately)

76 mm( 3 " )

178 mm( 7 " )

3/4 " NPT aluminum conduitx 300 mm ( 12 " ) long

cast aluminum

customer mounting plate. Refer totransducer outline for dimension details

minimum 90 mm ( 3.5" ) dia. clearance for transducer aiming

3/4 " locknut

Hand Tighten Only!

In solids applications, the transducer should be mounted so that it is aimed toward the low level draw point.To facilitate this mounting, it is suggested that the optional Milltronics Easy Aimer Kit be used. See Fig. 7for ST 100 transducer mounting details.

PL-250 10 – 6

EASY AIMER KIT INSTALLATION

1. Assemble transducer to conduit via reducing coupling supplied and feedconduit through center hole of aiming fitting, secure assembly with the conduit clamping screws.

2. Install locknut onto top end of threaded conduit

3. Bolt down mounting block ( i.e. to access plate of bin ) in a location away fromfill points or structural members that may intersect the sound’s path toward the low level draw point.

4. Leaving the sighting block binding screws fastened, loosen the angle blockbinding screws. Rotate angle block until transducer is pointing at the desiredangle. Angle reference graduations on the sighting block are 3.3° apart; e.g. ifline at 0° on angle block is 2 graduations past the 0° on the sightingblock, then transducer is angled at 6.6° from vertical.

Re-fasten angle block binding screws.

5. Lossen the sighting block binding screws and rotate sighting block untiltransducer is pointing in the desired direction. Direction reference graduationson the mounting block are 30° apart.

Re-fasten sighting block binding screws.

NOTE : It may take several attemps at various angles/directions to obtainoptimum results. Refer to sections Installation\Transducers andTroubleshooting\Advanced Calibration for guidelines in aiming the transducer.

FIG. 6B

PL-250 10 – 7

FIG. 7

TRANSDUCER MOUNTING - ST-100

Typical Solids Appl ication

mounting plateor blind flange

transducer

rubber washersor grommet

to junction box,Refer to Fig. 3

mounting plate

refer to Mounting Detail

Mounting Detail

threaded studs provideadjustment for sightingtransducer

bolt

washer

nut

washer

NOTES :

1. In solids applications, mounting should allow transducer to be aimed at the draw point at the bottomof the bin.

2. Transducer installation, whether in non-hazardous ( as shown ) or hazardous areas, must be done in in conjunction with approved conduit, boxes and fittings and to procedures in accordance with all governing regulations.

3. Refer to FIG. 3 for wiring details.

4. All mounting hardware supplied by customer.

PL-250 10 – 8

TRANSDUCER MOUNTING - LIQUID APPLICATIONSST - 50 SERIES TRANSDUCERS

Flange, gasket and hardware supplied bycustomer. Refer to standpipe application, section

** nylon bolt5/8 " - 11

** nylon nut

*** flat face flange only

* 1" NPT PVCcoupling

Customer flanged standpipe.

* 1" NPT PVCnipple

** neoprene gasket( min. 1/4 " thk. )

Blind Flange Flanged Transducer

* Items supplied with all ST-50 transducers.** Items supplied with flanged transducers.

GUIDELINES :

1. Do not mount transducer directly to metal. Use PVC coupling and nipple as provided.

2. Do not overtighten mounting. Hand tightening of nylon bolts and nuts or PVC coupling and nipple is sufficient.

3. In liquid applications, transducer mount ( flange, bracket, conduit or plywood ) must keep transducer perpendicular to liquid surface.

4. Transducer installation, whether in non-hazardous ( as shown ) or hazardous areas, must be done in conjunction with approved conduit, boxes and fittings and to procedures in accordance with all governing regulations.

5. Flanges must be flat face only. ***Do not use raised face or lap joint flanges.*** Inner standpipe surface and ends must be smooth and free of burrs, ridges or seams.

FIG. 8

Bracketflexible conduit

steel channel

* 1 " NPT PVCcoupling

transducerST-50 series

Plywood

* 1 " NPT PVCcoupling

Plywood mounting provides excellentisolation, but must be rigid enough toavoid flexing if subjected to loading.

PL-250 10 – 9

FIG. 9A

"Preferred" "Alternate"

TYPICAL SOLIDS APPLICATIONS

1

2

1

1

23

emptying profile

bin wall seams

optional aiming fitting

1. Transducer too close to materialinlet. Falling material will intersectsound beam and cause erroneousreadings or loss of echo.

1. Transducer angled to avoid seams in bin wall and aimed at discharge in order to read bin when empty.

2. Avoid intersecting bin wall seams,structural members and wall irregularities. Otherwise, refer toadvanced calibation.

1. On fluid like solids, aim transducerperpendicular to material surface.

2. Transducer mounted over discharge.

3. If physical limitations restrict transducermounting as in 2.

On dual discharge bins, aim eachtransducer at the discharge point belowand select average analog output.

transducer

minimal angle of repose

discharge

filling profile

PL-250 10 – 10

FIG. 9 B

TYPICAL SOLIDS APPLICATIONS ( cont’d )

LC

mounting plate or junction box

transducerconveyor belt

height adjustment

do not install transducer on tangent areaof belt as loading affects zero

install transducer over idler to minimize beltsagging between idlers caused by material loading

install transducer perpendicular to belt so thatecho is not reflected away from transducer

CONVEYORS

centering adjustment

mount transducer on conveyor centerline

PL-250 10 – 11

FIG. 9 C

TYPICAL SOLIDS APPLICATIONS (cont’d)

1

typical high leveltypical low level

drag conveyor

infeed

DRYER - WOOD CHIPS

1. Transducer should be mounted prependicular to slope of wood chips

PL-250 10 – 12

AIRANGER IV WIRING FORMATBASIC WIRING

NOTES :1. All wiring must be done in conjunction with approved conduit, boxes and fittings and

to procedures in accordance with all governing regulations.

2. Transducer cable must be run in grounded metal conduit, separate from all other cabling except the temperature sensor.

3. The maximum run between transducer and AiRanger IV is 365 m (1200’) using specifiedRG62U coaxial cable or equivalent.

4. For AiRanger IV 115 V AC, 50/60 Hz operation, wire jumpers across PS-10 TB-7, 8 and across TB1-9,10. For 230 V AC, 50/60 Hz operation, wire a jumper across PS-10 TB-8, 9 only.

5. Refer to instruction manual PL-274 Peripherals for interconnection between the AiRanger IVand SM-15, AO-15, SAM-30, RSM-60, SPD booster, and BIC.

6. For futher connection detail refer to : ST 25/50 FIG. 4, ST-100 FIG. 3, LR Series FIG. 2,temp. sensor FIG. 5. FIG. 10

to AiRanger IV backplane board

transducer

if temp. sensor is not used,terminate TB1-10/11 with a

9.53 K Ω resistor

to customers externaldevice 0-20 or 4-20 mA

DC into 750 Ω max.

temp.sensor

note 4main powerconnection

customerjunction

boxto AiRanger IV backplane board

to AiRanger IV backplane board

SENSOR

TEMP.

OUTPUT

RECEIVE

POWER

GRD.WHT.BLK.

+-

+-

+-

GRD.

-+

(ALA

RM

)H

IGH

LOW

12

123456789

1011 11

10987654321

12

TB1TB3

TB2

TRANSMIT

RC1

TB1

L1 L2/N GR

1 2 3 4 5 6 7 8 9 10

IN T

UO

NI

OUT T

UO

IN C

A

V

511 2

30

V

AC

115

V

AC

RC1

SHLD HOT

PL-250 10 – 13

PL-250

Schematics (pp. 10-14 to -20) are not included in 'Soft Manual'.

AIRANGER IV - Siemens · TABLE OF CONTENTS Title Page GENERAL INFORMATION About This Manual 1 – 1...

Documents

Transcript of AIRANGER IV - Siemens · TABLE OF CONTENTS Title Page GENERAL INFORMATION About This Manual 1 – 1...