Wohler A 600 - Image Inspection Services...

Wohler A 600Wireless Combustion and Emissions Analyzer

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Contents

1. Introduction .................................22. Getting Started ..........................123. Operating the Wohler A 600

for a Combustion Efficiency Test 185. Setup Screen Controls ..............356. Maintenance ..............................41

7. Sensor Replacement .................448. Parts and Service .....................459. Sales / Service Centers .............4610. Warranty .................................... 47 Appendix A – Peltier Cooler -

Gas Sample Conditioner ...........48 Quickstart Guide .......................52

Wohler A 600

2 Technical Service Hotline: 978-750-9876

1. Introduction

1.1 Important information

Before using this instrument, carefully read and observe all notes contained in these operating instructions.

Only trained professionals should use the Wohler A 600 and only for the intended purpose and within the specified data range. No liability is accepted under any circumstances or guarantee given for results determined in conjunction with this instrument nor for any damage that may arise when using this device.

1.2 Applications

The Wohler A 600 is a full feature industrial grade analyzer, which is the ideal tool for the engineer and service technician who needs to determine combustion efficiency, carbon monoxide (CO) safety and compliance with emissions requi-rements. The Wohler A 600 utilizes a full color, touch-screen display to access all its functions and to view up to 12, easy to read, different measurements and calculations at one time.

The Wohler A 600 measures flue gas O2, CO, NO, NO2, SO2, H2 stack and am-bient temperature, pressure and draft. The Wohler A 600 also calculates and displays combustion efficiency, ETA , stack loss, excess air / Lambda, CO2, NOx, and dew point temperature. Additionally the Wohler A 600 also calculates COc, NOc, NO2c, NOxc and SO2c, to an O2 reference selected by the user.

Wireless Probe: The Wohler A 600 comes standard with an integrated wireless probe based on Bluetooth® technology. All measured and calculated readings are transmitted continuosly between the probe and the handheld unit up to a di-stance of 30 ft (10 m). The probe provides fully remote control for all its features. When the wireless probe is docked into the handheld unit measures can be taken with a traditional hose assembly which comes standard with the Wohler A 600. The probe will be charged in the handheld unit. A fully charged set of three AA batteries provides up to 11 hours continous operation time.

Attention: Switch off the handheld unit before docking the wireless probe in or out!

Automatic CO protection: The automatic CO-safety-valve is there to protect sen-sors from getting permanently damaged by too high CO concentrations is build in the wireless probe as a standard feature. The automatic CO-safety-valve is a fail-safe system which does not need any operator intervention. For long term measurements (more than 4 hours) an active gas cooler is available.

Smartsensors: The build-in diagnostic program checks all sensor conditions and unit parameters during warm up automatically. Sensors are all precalibrated and field replacable.

1. Introduction

Wohler A 600

3 e-mail: [email protected] http://www.wohlerusa.com

1. Introduction

Full Color Touch Screen Display: The full color 5.7“ display with Touch Screen operation builds the next generation of the proven Wohler user interface. Latest graphic chipsets provide more than 65.000 brilliant colors to easily read and un-derstand the measurements. A fully charged set of six AA batteries provides up to 11 hours continiuos operation.

Data management: The Wohler A 600 comes standard with a 16 MB SD memory card to provide data storage for 1000 complete combustion records. The USB port allows easy access to the stored information.

Information on all models of the Wohler A 600 is contained in this manual so please disregard information that does not relate to your model.

1.3 The Wohler A 600 Features

• Fullcolor5.7“TouchScreenDisplaywithapixleresolutionof320x240.

• WirelessprobewithBluetooth® technology, maximum distance of 30 ft (10 m). Probe and hose or probe only measuremments possible.

• Measuresanddisplays:O2 and CO content in the flue-gas, combustion-air temperature, stack temperature and pressure / draft.

• Calculatesanddisplays:COc, CO2 content in the flue gas, combustion effici-ency, excess air, stack loss and flue gas dew point.

Wohler A 600


• Measuresanddisplays:NO,NO2, SO2, H2, and COHIGH (depending on model)

• DisplaysemissionmeasurementsforNO,NO2 and/or SO2.

• Emissionconversionscanbedisplayedinpartspermillion(ppm),milligramsof pollutant per cubic meter of gas (mg/m3), pounds of pollutant per mega BTU (#/MBTU), or grams of pollutant per gigajoule (g/GJ).

• Allcombustioncalculationsandmeasurementsaredisplayedononescreenwith emission measurements and calculations on a second.

• Real-time,on-screen,graphicaldisplayofanymeasuredorcalculatedtestvalues.

• COsensorhasanautomaticCO-safety-valvetoprotectthesensorfromhighconcentrations of carbon monoxide.

• Displaystemperatureineither°Cor°Fandpressureineitherinchesofwatercolumn (in H2O), Pascal (Pa), 1/10 Pascal (.Pa) or millibars (mbar).

• Whenunitisturnedon,itautomaticallyzerosandpurgesallsensingchannelswith ambient air for 60 seconds. The automatic sampling valve offers to start the core temperature search directly after switching on.

• Thewatertrapandfiltersareconvenientlylocatedinthewirelessprobeforeasy viewing, draining or changing.

• TheWohlerA600canoperatefromeitheranACadapter,internalrechargea-ble batteries, or standard AA alcaline batteries.

• Batteryutilizationdisplay.

• Timeanddatedisplay.

• StandardSDmemorycard,16MBfor1000individualcombustiontestre-cords standard.

• RecordscanberecalledforprintingorfortransmissiontoaPC.

• Alloperatoranddatamanagementfunctionsareviathetouch-screeninter-face.

• Customerrecordscanincludethecustomername,ID,devicenumberandcomments. Information is entered using the touch-screen alphanumeric dis-play.

• Customerandoperatordataontheprintoutappearsuserselectable.

• Fieldreplaceableprecalibratedsensors.

• Fullyautomaticselftestandsensordiagnosis.

• Continuousfiltermonitoringwithstatusinformation.

• 9presetfuelsand1customeradjustablefuel.

1. Introduction

Wohler A 600


1. Introduction

1.4 Specifications

Each Wohler A 600 Model measures and displays:O2: Oxygen from 0.1 to 21.0%CO: Carbon monoxide, hydrogen compensated from 0 to 4000 ppmH2: Hydrogen from 0 to 1000 ppmTA: Combustionairtemperaturefrom0to212°F(–20to100°C)TS: Stackgastemperaturefrom32to1650°F(0to900°C)Pr: Pressure: Stack draft in the range of ±60.000 inch H2O (±150 mbar)

Optional sensors include:COHIGH: Carbon monoxide from 0 to 100,000 ppmNO: Nitric oxide from 0 to 2000 ppmNO2: Nitrogen dioxide from 0 to 150 ppmSO2: Sulfur dioxide from 0 to 4000 ppmH2: Hydrogen from 0 to 1000 ppm

Each Wohler A 600 Model calculates and displays:CO2: Carbon dioxide from 0 to a maximum, fuel dependent value in per-

centCOC: Carbon monoxide from 0 to 100,000 ppm when O2 referenced (user

defined)Effc: Combustion efficiency from 0 to 100%EA: Excess air from 0 to 250%Loss: Stack loss from 0 to 100%Dpnt: Dewpointtemperaturein°For°CLambda: Excess air from 1 to 9.99ETA: Efficiency from 0 to 120%v: Air speed from 0.4 to 130 m/s (1.3 to 425 ft/sec)V: Air flow depending on funnel from 0 to 2000 m3/h (0 to 1180 cfm)

Depending on additional optional sensors:NOC: Nitric oxide from 0 to 100,000 ppm when O2 referenced (user de-

fined)NO2C: Nitrogen dioxide from 0 to 100,000 ppm when O2 referenced (user

defined)

• Automaticmeasuringvalvetoswitchbetweenwarmupandsamplingmode.Allows you to start a measurement directly after unit is switched on.

• Differentialpressuremeasurementwithsecondportonthewirelessprobe

• Printpreviewfunction

• Quickchargemodeforbothprobeandhandheldunit

• Supplyairtemperatureprobecanbeconnectedtotheprobeortothehand-held unit

Wohler A 600


1. Introduction

SO2C: Sulfur dioxide from 0 to 100,000 ppm when O2 referenced (user defined)

NOx: Oxides of nitrogen (NO + NO2) from 0 to 2150 ppmNOxc: Oxides of nitrogen (NO + NO2) from 0 to 100,000 ppm when O2 refe-

renced (user defined)

Fuels (User Selectable):Natural Gas Wood Oil #2 Oil #6Liquified Gas Kerosene Coal Digester GasPellets 1 User defined fuel

Normal Operating Environment:Temperature +40to+104°F(+5to+40°C)Humidity 15 to 90% Relative Humidity, non-condensingAir Pressure Atmospheric

Power:6 ‘AA’ rechargeable Ni-MH batteries handheld unit3 ‘AA’ rechargeable Ni-MH batteries wireless probe

Operating Time:

Approximately 11 hours of continuous operation with fully charged batteries. No time limit if using the AC adapter.Accuracy:O2 ±0.3 %CO ±5 % of reading or ±20 ppm, whichever is grea-

terCOHIGH ±10 % of reading or ±100 ppm, whichever is

greaterNO ±5 % of reading or ±5 ppm, whichever is greaterNO2 ±5 % of reading or ±5 ppm, whichever is greaterSO2 ±5 % of reading or ±2 ppm, whichever is greaterH2 ±10 % of reading or ±40 ppm, whichever is grea-

terTS:StackTemp. ±4°Ffrom32to257°F(±2°Cfrom0to125°C) ±6°Ffrom258to481°F(±3°Cfrom126to249°C) ±8°Ffrom482to751°F(±4°Cfrom250to399°C) ±16°Ffrom752to1562°F(±9°Cfrom400to

850°C)TA:Combustion-AirTemp. ±2°F(±1°C)Pr: Pressure ±3% of reading or ±0.002 inH2O (±0.3 Pa)

whichever is greater

Wohler A 600


1. Introduction

Resolution:O2 0.1%CO 1 ppmCOHIGH 1 ppm; 10 ppmNO 1 ppmNO2 1 ppmSO2 1 ppmH2 1 ppmTS 0.1°F(0.1°C)TA 0.1°F(0.1°C)Pr 0.001 inH2O (0.1 Pa)Display:5.7“ color LCD, touch screen with alphanumeric, graphic displayDimensions:Height: 9.5 in. (240 mm)Width: 6.1 in. (155 mm)Depth: 2.6 in. (65 mm)Weight:Approximately 1.7 lb (760 g) handheld unit, 0.9 lb (420 g) wireless probe.

Wohler A 600


1. Touch Screen graphical display2. IrDA port (top)3. Combustion air socket (front)4. Charging/Power Jack (side)5. USB port6. Memory card slot for MMC / SD memory cards7. Combined gas and power hose8. Port for manifold pressure9. Power ON/OFF button10. Charging indicator for wireless probe11. Charging indicator for handheld unit and MMC / SD access mode12. Water trap and filter13. Power ON/OFF switch for wireless probe when undocked and status indicator14. Wireless probe, pull left to undock15. Battery compartment handheld unit16. Battery compartment wireless probe17. Heat exchanger18. Water stop filter (inside)19. Cotton filter20. Coarse filter21. Probe holder22. Handloop holder23. Plug24. Drain valve25. Belt clip for wireless probe only

1.5 Wohler A 600 Components and Controls

Figure 1-1: Wohler A 600 Components

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2

3

4

1

8

6

109 1112, 18, 19 13

14

15

5

16

17 21

20

23

24

22

25

1. Introduction

Wohler A 600


1. Introduction

1.6 Docking and Undocking the wireless probe

The Wohler A 600 is designed to work, both as a traditional probe and hose assembly and a wireless probe analyzer. To undock the wireless probe, simply press the release button and slide the probe out of the base unit. A probe and hose assembly could be used with the wireless probe see figure 1-9.

Figure 1-9: docked wireless probe (left), undocked wireless probe (right).

In some conditions, it is helpfull not to use the hose, see figure 1-10 for wireless operation without hose.

Release button

ON/OFF button of the wireless probe

UNDOCK THE PROBE

Figure 1-10: Wireless operation without hose

Wohler A 600


1. Introduction

Figure 1-2: Display Controls in Combustion Test Run Mode

1.7 System RUN-Mode

Touch to enter GRAPHIC mode to select individual sensor to graph

Touch to zero pressure sensor

Touch to freeze current displayed values

Touch to turn pump off for pressure measurements

PUM2 clean out pump running

Touch to toggle between combu-stion and emission screens

Select fuel and remaining battery life

Customer Information

Current date (mm-dd) and time

Wohler A 600


Figure 1-3: Display Controls in Combustion Test Hold Mode

1. Introduction

1.7 System HOLD-Mode

System Status - Hold mode

Touch to printout displayed test data from IRDA port

Touch to enter customer data input and setup screen

Touch to re-enter run mode and continue measuring

Touch to turn pump off for pressure measurements

PUM2 clean out pump running

Touch to toggle bet-ween combustion and emission screens

Wohler A 600


2. Getting Started

Important. Please ensure that the batteries of both handheld unit and wire-less probe are fully charged before use.

2.1 Turning on the Wohler A 600

1. To turn the analyzer on while the wireless probe is docked in simply press the OFF/ON button once (No. 1 Figure 1-1). This starts both the wireless probe and the handheld unit. The LCD should briefly display the Wohler A 600 logo.

2. To turn the analyzer on while the wireless probe is undocked, first ensure that the wireless probe flashing blue LED is indicating that the probe is switched on. Then follow step 1 to turn on the analyzer handheld unit. To switch the wireless probe on, simply press the OFF/ON button of the probe once. To turn off the probe, hold the OFF/ON button for three seconds.

3. A menu across the bottom of the screen allows the operator to access the functions shown in Figure 2-3.

2. Getting Started

Figure 2-1: Initial Turn-ON Screen and Menu Controls

Battery life remaining of the handheld unit

Touch to enter Setup screen menu

Touch to enter Data screen menu

Touch to enter Sensor Diagno-sis screen

Touch to enter data manage-ment screen

Signal strength indicator

Current date and time

Battery life remaining of the wireless probe

Firmware

Wohler A 600


2. Getting Started

2.2 SET UP

Before using your Wohler A 600 for a combustion test, the following parameters or settings must be entered or changed:· Printout features· CO protection limit· Time and Date· Oxygen Reference· User fuel parameters· Display configuration· Measurement Units

NOTE: The Wohler A 600 retains its last settings until reset by the user to either the factory default settings or to new user selections.

The main Setup Screen is accessed by touching the SETUP key (lower left) after the Wohler A 600 is first turned ON and while its initial Turn-ON Screen (see Fi-gure 2-1) is displayed. (screen shows for approximately 5 seconds).

Figure 2-2: Main Setup Screen

Wohler A 600


Figure 2-3: Main Setup Controls

Printer setup screen

CO protection limit input screen

Date and Time setup screen

Oxygen reference level input screen

Custom fuel paramters input screen

Probe setup and calibration screen

Display setup and unit selec-tion screen

2. Getting Started

Wohler A 600


2.3 Factory Defaults

The Wohler A 600 has been set up at the factory for the following defaults:

Time and Date Current time (EST) and dateTemperature °FPressure inch H2OEmissions Unit of Measure ppmO2 Reference 3 %Memory Formatted – test data

These settings can be changed as described below.

2.4 Display setup and unit selection screen

The Wohler A 600 provides a fully user adjustable display and measurement units selection. To change any related options, enter the Display Setup screen as shown in figure 2-2. The display setup controls are shown in figure 2-4.

Figure 2-4: Display Setup Controls

2. Getting Started

Touch to change dis-play bright-ness and contrast

Designator

Touch to set the unit to factory def-ault settings

Touch to save and exit

Touch to exit without saving

DesignatorDesignator

Unit Unit

Wohler A 600


2.5 Using a hose with the wireless probe

The Wohler A 600 can operate both with a probe connected directly to the wireless probe or with a hose in between. The probe and hose assembly can be useful in hard to reach spaces. With the probe and hose assembly connected and the wireless probe plugged in, the Wohler A 600 works as a traditional non-wireless analyzer. To connect the probe and hose assembly simply remove the retaining collar and pull the probe tube out of the wireless probe. Plug the probe and hose assembly into the wireless probe and push together snugly. Secure the connection by screwing on the retaining collar. Plug the probe tube into the probe and hose assembly handle by aligning the two prongs with the appropriate holes in the probe handle and push together snugly. Then secure by screwing on the retaining collar.

2.6 Connecting the Combustion-Air-Temperature Probe

Plug the Combustion-Air Temperature Probe (TA) into the plug on the Wohler A 600 located just behind the handloop (No. 16, Figure. 1-1). The Wohler A 600 is supplied with a 1¼ inch temperature probe. This short probe is used when the primary air source for the burner is room air. Longer length probes are available for situations where a burner’s combustion air is being drawn in from an outside source.

The Combustion-Air Temperature Probe can alternatively be connected to the wireless probe directly.

2.7 Battery Charging and replacement

The Wohler A 600 comes with six rechargeable AA batteries in the handheld unit and three rechargable AA batteries in the wireless probe. All of them can be charged while being in the analyzer. To charge both the handheld and the wire-less batteries at the same time, ensure that the wireless probe is docked into the handheld unit. Plug the supplied Wohler AC adapter into a 120 VAC outlet, then plug the adapter’s DC output plug into the Wohler A 600’s power jack (No. 2, Figure 1-1). The Wohler A 600 can be operated while its batteries are being char-

2. Getting Started

1. To change measurement units simply select the value you want to change. The units will toggle between all available units by each hit. Please note that all temperature units will change simultaneously.

2. To display or hide a selected value, simply hit the designator twice and it will toggle between greyed (hidden) or solid (displayed).

3. To move a value, hit the designator you want to move first and it will turn to green. Hit the space you want to move to and the designator will show up at its new position. To exchange values simply pick a designator you want to exchange the value with.

Wohler A 600


ged when using the regular power supply. When the mains supply is connected correctly the left battery symbol is showing a plug on the display. The Wohler AC adapter supplied with the Wohler A 600 is able to identify the charging status of the batteries. Completely discharged batteries can take up to three hours to fully recharge. A solid green LED will indicate the end of the charging cycle. The bat-teries can also be removed from the unit and charged using an external universal charger. When reinstalling batteries, it is important to ensure the correct polarity position for each battery as indicated on the inside of the battery housing.

If recharging of batteries is not possible, regular disposable batteries may be used. The battery cover located on the back of the unit can be removed by pushing the latch down and then lifting the cover up.

WARNING: FIRE HAZARD - DO NOT ATTEMPT TO RECHARGE DISPOSABLE BATTERIES

The remaining battery life is shown as a symbol in the top-right hand corner of the screen. The Wohler A 600 has an automatic, low power conservation feature that turns OFF the backlight and displays the warning message “** LOW BATTE-RY **” on the screen when remaining battery life get very low. While this reduces the screens visibility, it allows for all remaining battery power to be used to help complete whatever activity the user was engaged in.

2. Getting Started

Wohler A 600


3. Operating the Wohler A 600

3. Operating the Wohler A 600 for a Combustion Efficiency Test

NOTE: This chapter assumes that the user of the Wohler A 600 has the re-quired technical knowledge to properly identify the sampling point(s) for the type of equipment involved.

3.1 Operating the Touch screen

The Wohler Wohler A 600 provides an user friendly touch screen operation, simply hit the screen. Due to an optical readout, it is not necessary to press the screen with force. Active keys and buttons are highlited so the operator sees what he can do.

The information presented in the top line of the display, the status line, will all-ways be the same, e.g. fuel, customer data, notes, battery status, wireless signal strength, date and time.

The bottom line, the command line, usually contains keys to operate the analyzer e.g. stop mode, run mode, save, print or exit.

3.2 Turning the Analyzer ON

Please ensure the batteries are fully charged before use.

1. To turn the analyzer on while the wireless probe is docked in simply press the OFF/ON button once (No. 1 Figure 1-1). This starts both the wireless probe and the handheld unit. The LCD should briefly display the Wohler A 600 logo.

2. To turn the analyzer on while the wireless probe is undocked first ensure that the wireless probe flashing blue LED is indicating that the probe is switched on. Then follow step 1 to turn the analyzer handheld unit on. To switch the wireless probe on simply press the OFF/ON button of the probe once. To turn off the probe, hold the OFF/ON button for three seconds.

3. The Wohler A 600 automatically starts the 60 seconds self calibration cycle. It is not necessary to wait until this cycle is completed so you can use the analyzer immediately! See figure 3-1

Wohler A 600


Figure 3-1: Self calibration cycle controls

3.3 Select the Fuel type

The Wohler A 600 defaults to the most recently selected fuel as shown in the upper-left hand corner of the display (see Figure 1-2). To select a different fuel, touch the Fuel name to display the Fuel Selection Screen (see Figure 3-2). Touch the desired fuel name to select that fuel. The Wohler A 600 will automatically return to the Run Mode screen. Ten predefined fuels are selectable by simply touching the screen. The button ‘New MYFUEL’ will select the customer adjust-able fuel. Please ensure that the fuel parameters are set correctly, see figure 2-3. The ‘Testgas’ button is for Service purposes only.


Touch to enter air velocity measurement, see chapter 4

Touch to enter self diagnostic

Zero draft measurement

Stop self calibration and return to initial screen

Wohler A 600


3.4 The Combustion Test Screen

Figure 3-3: Combustion Test Screen

O2 = % OxygenCO2 = % Carbon DioxideEffc

c = % Combustion Efficiency, C indicates condensing conditionsCO = Carbon MonoxideCOc = Carbon Monoxide (air-free) referenced to a % of O2TA = Combustion-Air TemperatureTS = Stack temperature

Figure 3-2: Fuel Selection Screen


Wohler A 600



3.5 Navigation to the Emission screen FUEL SELECTION

The operator can easily toggle back and forth between the Combustion Results screen and the Emissions screen by simply pressing the DISP button on the bot-tom right of the screen.

Loss = % of stack losses (100% - Effc)Dpnt = Dew point temperaturePr = Pressure / DraftEA = % Excess AirH2 = Hydrogen

Please note that this screen is fully user changeable! Figure 3-3 is showing va-lues and units as defined in the default settings.

Figure 3-4: Display Toggle Screen Control

3.6 The Emission Test Screen

Figure 3-5: Emission Test Screen

NO = Nitric OxideNO2 = Nitrogen DioxideNOx = Oxides of NitrogenSO2 = Sulfur Dioxide

Touch ‘DISP’ to toggle between Combustion and Emission Results

Wohler A 600



O2rf = % Oxygen ReferenceNOc = Nitrogen Oxide referenced to a % of O2NO2c = Nitrogen Dioxide referenced to a % of O2NOxc = Oxides of Nitrogen referenced to a % of O2SO2c = Sulfur Dioxide referenced to a % of O2

HOLD Places the analyzer on hold and freezes the display at the current values.

RUN Restarts a combustion test that was placed on hold.

GRAPH After this key is pressed; touch the designator of the test value to be displayed as a graph. Refer to Section 3.6 Using the Graph Function.

DATA Enters the data management screen (see chapter 4).

PRINT Prints all currently displayed test data. When print preview feature is checked the printout preview will be shown. Refer to Section 4.9 Printing.

Pr=0 Zeros the pressure sensor to the currently applied pressure – DO NOT zero pressure sensor with probe in stack.

PUM1 Touch to switch off the sampling pump

PUM0 Touch to switch on the sampling pump

PUM2 Switch from automatic CO protection mode back to normal sampling mode

Notes: Units of measure (ppm; mg/m3; #/MBTU; g/GJ), % O2 reference, pressure units, and temperature units are all user selectable. Refer to Section 5.2 Select-ing Measurement Units.

Figure 3-7: Controls in HOLD Mode

Figure 3-6: Controls in RUN mode

3.7 Touch Screen Controls and their Function

Wohler A 600


3.8 Using the Graph Function

The GRAPH key is used to produce a graph of any measured or calculated value shown on the Combustion Test Screen, see figure 3-8. This function is useful for observing a trend of a measured value over a 120 seconds time period.

To start the graph function:

1. With the analyzer operating in its Run mode, touch the GRAPH key to turn all value designators into keys.

2. Touch the displayed designator key of the combustion or emission test value to start the graph function.

3. A graph of the selected combustion test value is now drawn from left to right on the screen. Along with the graph the display will also show the current numerical value. In the example below, a graph of the oxygen value shows that the oxygen level has dropped from a high of 20.9 % to its current value of 20.2 %.

Figure 3-8: Graphic Mode Screen

4. At the end of 120 seconds, a new graph is started. Touch the HOLD key to freeze the graph. Touch the RUN key to resume graphing.

5. Exit the graph mode by touching the TEXT key.


Wohler A 600


3.9 Automatic CO Sensor Protection

When the CO sensor is exposed to levels in excess of CO-limit (adjustable from 400-4000 ppm. see figure 2-2), a valve closes and diverts the flue gas from the CO sensor. When the current CO value drops below 80% of the CO-limit value the key PUM2 appears on the display to reset the valve and resume CO sam-pling. With a COhigh sensor installed (100,000 ppm) the valve will be reseted automatically.

3.8 Condensation Precautions

Removing condensation from the gas sample is critical for the proper operation and measurement accuracy of the unit. The Wohler A 600 has six condensate filters (Figure 3-11). The amount of condensation in the water trap / filter assem-bly should be checked before conducting a test and also observed during a test.


Filter description, refer to figure 3-10:

1 Coarse filter within the probe and hose assembly

2 and 3 Coarse filer within the heat exchanger

4 Cotton filter

5 heat exchanger

6 Water Stop filter

Figure 3-9: Draining the Water Trap, left picture closed, right picture opened drain valve

closed open

Wohler A 600



1. Coarse filter

cover plug

2. and 3. Coarse filter

main cover

6. Water Stop filter

5. Heat exchanger4. Cotton filter

drain valve

Figure 3-10: six condensate filters

Probe and hose as-

Wireless Probe

The analyzer should not be exposed to flue gas with high moisture content if the analyzer has been cooled to below freezing for a long period of time (e.g. over-night in a vehicle).

The waterstop filter (6 in Figure 3-10) blocks water from entering the analyzer. If this filter becomes saturated with water, the analyzers pump will slow down and nearly stall. The water stop filter should be replaced if this happens.

To access the water stop filter 1) remove the heat exchanger; 2) pull the the water stop filter, remove and replace; 3) reassemble heat exchanger.

Wohler A 600



Figure 3-11: Wohler A 600 gas channel and filter protection

3.11 Ending a Combustion Test

WARNING! HEAT HAZARD! Do Not Touch the probe after removing it from the stack. Allow the probe to cool before handling (about 5 minutes).

When testing is complete, remove the probe from the stack and allow the analy-zer pump to run to purge the hose and analyzer with room air until normal ambi-ent gas readings are observed on the display. Turn the analyzer OFF by pressing the OFF/ON button. When storing the analyzer, it is a good idea to empty the water trap and dry it out. It is also suggested that you remove the hose and allow it to dry when used.

3.12 Using the Gas Sample Conditioner when Measuring NO2 or SO2

When measuring NO2 or SO2 it is highly recommended that a Wohler Peltier Cooler gas sample conditioner will be attached to the probe assembly. The gas sample conditioner removes water vapor from the gas sample preventing the formation of water droplets inside the probe hose. If water droplets were to be formed inside the hose, a portion of the NO2 and SO2 gas molecules in the gas

Wattefilter

heat exchanger

2. cotton

cotton filter

4. water stop

1. sponge filter

exhaust gashose assembly

exhaust gas clean-out pump

duct

Wohler A 600


sample would be removed by the water resulting in inaccurate, lower-than-actual readings for these gases.

Refer to Appendix A for detailed information on how to install, operate, and maintain the Gas Sampler Conditioner.

3.13 Status and Error Messages

The following is a list of status and error messages that appear in the top line of the display while operating the analyzer.

Display Explanation

**LOW BATTERY**: Battery voltage dropped below 3.45V (wireless probe) or 6.8V (handheld unit)

FUEL SELECTION: Select the fuel being burned by touching the name of the appropriate fuel.

SYSTEM IN HOLD: The display is frozen at the values being displayed when the HOLD key was pressed.

COMBUSTION TEST: The display shows all readings related to a combustion test

EMISSION TEST: The display shows all readings related to an emission test

SENSOR DIAGNOSIS: Sensor error message will be displayed following initial startup periode. Check system diagnostic wich sensor needs to be replaced.

CHECK FILTERS: The sampling rate is to low, check filters and pump


Wohler A 600



4. Other Operations of the Wohler A 600

4.1 Measuring Pressure

In addition to draft measurements, the Wohler A 600 is also capable of measu-ring differential pressure using both the probe tip and the secondary pressure port (No. 14, Figure 1-1). Note: The probe’s secondary pressure port is attached to the pressure sensor’s negative port, causing a positive pressure to be dis-played as a negative value. CAUTION: APPLYING TO A PRESSURE SOURCE GREATER THAN 100.0 inch H2O (250.0 mbar) MAY DAMAGE THE PRESSURE SENSOR

Perform a pressure-measurement as follows:

1. With the analyzer turned ON, allow both the probe tip and the probe’s second pressure inlet to sample atmospheric pressure.

2. Zero the pressure sensor by touching the Pr=0 key at the bottom of the dis-play.

3. Connect 3/16“ ID tubing between the probe’s secondary pressure port and the pressure source being measured. Note: See high pressure caution above.

4. The applied pressure is displayed as “Pr” on the display.

4.2 Data Management

The Wohler A 600 contains a data management system that is capable of sto-ring up to 1000 individual test records. Each test record can be saved under a customer’s name and then be recalled for viewing or printing at a later time. If desired, customer names can be pre-entered either manually using the analyzer’s alphanumeric touch screen, or entered into a personal computer and then uploa-ded to the Wohler A 600. An operator can then recall a customer’s name at the job site and save test data under that name.

4.3 Using the Touch Screen Keyboard

Entering data into the data management system is accomplished by using the analyzer’s Touch Screen Keyboard. Numbers, letters and some punctuation can be entered by touching the displayed character.

Wohler A 600



4.4 Data Management Controls

To enter data management controls hit the HOLD button to place the analyzer on hold and than touch the DATA button. Figure 4-2 shows the data management screen.

Figure 4-2: Data Management screen

The data management screen shows a preview of the test report. To select a customer, hit the CUSTOMER button and the customer data management screen shows up, Figure 4-3. The data management screen allows to enter the setup at anytime by touching the SETUP button. The analyzer enters the setup mode screen as shown in Figure (2-2). To add a comment to the test report, hit the NOTE button and enter your comment with the alphanumeric touchscreen key-

Figure 4-1: Touch Screen Keyboard Functions

Wohler A 600


4. Other Operations

Figure 4-3: Customer data management screen controls

a)

b)

Customer data management screen controls figure 4-3 a) from left to right:

Page UP : Page up in the customer database

Step UP : Step up one customer in the customer database

Step DOWN : Step down one customer in the customer database

Page DOWN : Page down in the customer database

MENU 2 : Switch to second menu figure 4-3 b)

ENTER : Select highlited customer

ESC : ESC to exit without changes

Del : Switch to Delete Menu figure 4-3 c) to delete individual or

all records

Customer data management screen controls figure 4-3 b) from left to right:

Srch ID : Search customer database by customer ID number

Srch Name : Search customer database by customer Name

MENU 1 : Switch to first menu figure 4-3 a)

NEW : Create new customer record

Sort : Change sort order between fields displayed in the status

c)

Wohler A 600


4. Other Operations

4.5 Entering a New Customer Name

To enter a new customer name, along with a customer ID, and device number:

1. Follow 4.4 to enter the customer data management screen and hit MENU 2 to display figure 4-3 b).

2. Touch the NEW button to enter the new customer name, see figure 4-1 with the alphanumeric touch screen keyboard.

3. Touch ENTER to confirm the name and get to the customer ID entry screen.

4. Confirm customer name by touching the ENTER button and return to the Cu-stomer data management screen figure 4-3

5. Touch the ENTER button to select the new customer and to return to the data management screen figure 4-2

6. Touch SAVE to store the measurement with the new customer data

4.6 Selecting an Existing Customer Name

If a customer name has been pre-entered, or if data has already been saved under a customer name, then select the desired name as follows:

1. Follow 4.4 to enter the customer data management screen figure 4-3

2. Move the blue selection line with the arrows to the customer you want to pick and confirm your selection with the ENTER button.

3. Touch SAVE to store the measurement with the selected customer

Note: A date stamp in the cutsomer data management screen indicates that data has been stored previously. To review stored information simply touch the date stamp to enter the print preview screen figure 4-4.

Figure 4-4: Print preview and data recall screen

Wohler A 600


4. Other Operations

4.7 Displaying and Printing Saved Data

Stored data is retrieved from memory as follows:

1. Follow 4.4 to enter the customer data management screen figure 4-3.

2. Use the scroll buttons to find the customer record.

3. Touch the date stamp to enter the data recall and print preview screen (figure 4-5) to retrieve stored data.

4. Use the scroll buttons to review stored information or touch PRINT to reprint the test result.

4.8 Display and Search by Customer ID or NAME

An alternative method of displaying customer memory locations is to search by the customer’s ID or NAME, see figure 4-3 b). Touch search by ID or search by name to enter the touch screen keyboard function. Start entering customer infor-mation and the best matching result is shown in the top line of the display. Hit the ENTER button to return to the customer data management screen with the found preselected customer.

4.9 Printing

If using an IrDA printer, turn ON the printer. Refer to the printer’s instruction ma-nual for detailed operation and maintenance information.

Align the printer with the top of the analyzer. To print during a combustion test, first freeze the display readings by touching the HOLD key. To print saved data, follow Section 4.7 Displaying and Printing Saved Data.

Figure 4-5: Print preview and data recall screen

Scroll buttons

Touch to print report Touch ESC to exit

Wohler A 600


4. Other Operations

Begin printing by touching the PRINT key. The message “PRINTER OUTPUT” is displayed while data is being sent to the printer. It is recommended to use the Wohler IR Thermo printer P/N 9130. Former slower printing models are not suita-ble for the Wohler A 600 high speed printout capabilities.

4.10 Returning to Factory Default settings

To return the Wohler A 600 to its factory default settings and to clear memory of all customer names and test records.

1. Turn ON the analyzer.

2. Touch the DATA key to enter the Data Setup screen figure 4-6.

3. Touch DEFAULT key to enter the Default Setup screen figure 4-7.

4. Ensure either SI or US set of default values is displayed and touch ENTER to set default settings

Figure 4-6: Returning to factory default settings

Figure 4-7: Returning to factory default settings

Wohler A 600


4.11 Air velocity and flow measurment

The Wohler A 600 measures air velocity and flow with an optional Pitot or S-tube probe. To start air velocity or flow measurement (figure 4-8) touch the AIR key at anytime during self calibration cycle see figure 3-1.

Probe parame-ters

Velocity / Flow Temperature

Screen Setup controls

Toggle velocity/flow

Touch to freeze display

Zero pressure

Exit

4. Other Operations

Wohler A 600


5. Setup Screen Controls


The Setup Screen is displayed in two different ways. First by touching the SETUP key after the analyzer is turned ON and second during a combustion test in HOLD mode (see figure 1-3), by touching DATA and in the Data Management screen the SETUP key. Please note that the PROBE SETUP is not available when entering the SETUP during a combustion test.

5.1 Setting Time & Date

Figure 5-1: Set Time and Date screen

Functions are as follows:

DATE Set the Wohler A 600 internal clock date.

TIME Set the Wohler A 600 internal clock time

ESC Exit without changes

ENTER Save and Exit

Simply check the box in front of the date and time format in which you want the Wohler A 600 to operate.

Exit

Wohler A 600



5.2 Display Setup

The Measurement Units and Display Setup screen controls various functions. This screen is showing both the combustion test screen on the left side and the emission test screen on the right side. You can either show, hide or move any particular reading. To configure your own display setup follow the steps below.

5.2.1 Show or hide a reading

All readings in figure 5-2 are configured to be displayed but the GI index. To toggle the GI index from hide to show simply touch its designator once and the text color of the designator will change from white to green. Touch GI a second time and the reading will become visible. This can be done with every reading.

5.2.2 Move a reading

The position of every reading shown in figure 5-2 is user adjustable. If you want the EA to appear on the Emission screen simply touch the EA designator once to turn the text color from white to green. Now touch the space where you want to position the EA reading, e.g. the GI position. Both designators and their related units will swap.

5.2.3 Change brightness and contrast

Touch the brightness and contrast key to enter the contrast and brightness con-trol screen (see figure 5-3). Adjust the brightness and the contrast to a level you prefer. Please note, that a high brightness level will cause lower battery operating times. Confirm the new settings by touching the ENTER key or hit ESC to exit without any changes.

Wohler A 600


Figure 5-3: Contrast and Brightness setup screen

5.2.4 Change measurment units

To change a measurement unit simply touch the related unit key in the display setup, (see figure 5-2). Some readings like O2 and CO2 do not provide a unit key and can not be changed.

5.2.5 Change from Excess Air to Lambda calculation

To toggle between the EA (Excess Air) and the Lambda calculation simply touch the related unit key.

5.2.6 Change the Efficency calculation

To toggle between ASME and Siegert efficency calculation, touch the related unit


Wohler A 600


key. The calculation of the Loss reading will change automatically.

5.3 Printout Controls

Figure 5-4: Printout setup screen

The Wohler A 600 provides a print preview feature showing the report prior to printout. For activation check the box in front of the feature.

Sensor details can be printed on the report by checking the second box. Sensor details include date of installation and date of the last calibration.

5.5 O2 Reference and CO Limit

To change the O2 reference level or the CO limit value touch the desired key in the main Setup screen (see figure 1-3) and enter the new value by using the touch screen keyboard.

5.6 Logo Information on Printout

Do the following to enter up to six lines of text that will appear at the top of the printout (i.e., your company’s name, address and phone number):

1. Turn the analyzer ON.

2. Touch the DATA key as soon as the Initial Turn-ON Screen is displayed to show the Data Screen.

3. Touch the LOGO key to display the first of six logo entry screens.

4. Use the Touch Screen Keyboard (see figure 4-1) to enter the first line of text; after that, touch the Enter key to save the text just entered and display the next logo entry screen. Repeat this step to enter the remaining lines of text, or just touch the Enter key to enter blank lines.


Wohler A 600


5.7 Self Diagnostic Screen

Figure 5-5: Hardware Information Screen

Figure 5-6: Self Diagnostic Screen

To enter the Self Diagosis screen, turn the analyzer ON and touch the DIAG key. Confirm the window showing hardware information by touching the OK key (see figure 5-3). The Self Diagnostic Screen shows information about all sensors, manufacturing dates, measurement cycles and operation time, the pump and the backup batteries for the base unit and the NO sensor. This screen is for infor-mation purposes only and designed to help customers and our technicans to identify problems.

The flow of the sampling pump must be higher than 10 liters/hour. The base


Wohler A 600



unit backup battery voltage must be higher than 2.5 Volts. When a NO sensor is installed the backup battery must show higher than 2.5 Volts to work properly.

The cycles and operation time reset is possible at the manufacturer only!

Wohler A 600


6. Maintenance

6.1 Filter Maintenance

The Wohler A 600 has six filters which prevent soot particles and water from entering the analyzer. Two coarse filters and the water trap‘s cotton filter and the water stop filter (No. 6 and 7, figure 1-1) are located on the wireless probe, while a second coarse particulate filter (No. 13, figure 1-1) is located in the grip of the probe assembly. To ensure maximum gas flow through the analyzer, either clean or replace these filters as described in the following sections.

6.1.1 Probe & Hose Assembly Filter

A coarse filter located in the probe handle to prevent soot from entering the hose, see figure 6-1. To remove this filter, first pull off the probe’s end cap and then, using tweezers or a similar tool, remove the filter from its chamber. Clean the filter by rinsing it in warm water and dry it with a paper towel. After the filter is clean and dry, reinstall it inside the probe handle. If necessary, replace the filter (P/N 9632) if it gets lost or damaged. It does not significantly impair the coarse

6. Maintenance

Figure 6-1: Removing the Probe Filter

6.1.2 Wireless Probe Filters

During a combustion test the water trap should be periodically emptied to prevent condensation from collecting in the heat-exchanger chamber. Refer to Section 3.8 Condensation Precautions. If the water trap’s cotton filter becomes wet open the cover plug and replace the cotton filter (P/N 6052) and reinstall heat

Coarse filter

Wohler A 600


6. Maintenance

cover plug

2. and 3. Coarse filter

main cover

6. Water Stop filter

5. Heat exchanger4. Cotton filter

drain valve

Figure 6-2: Wireless Probe Filters

exchanger.

6.1.3 Water Stop Filter

The water stop filter blocks water from entering the analyzer. If this filter beco-mes saturated with water, the analyzer’s pump will slow down and nearly stall. To replace this filter, first remove the water trap from analyzer to expose the water stop filter. Pull the water stop filter from its chamber (needle-nose pliers or similar tool may be required to remove filter). Replace filter (P/N 9621) (lettering facing upwards) and reassemble water trap.

6.2 Cleaning the Probe Assembly

If the analyzer is used on either coal or oil fired burners, particulates can accu-mulate within the probe. These particulates may, in time, build up and restrict the flow of gas into the analyzer. Note that the probe’s internal filter should prevent soot from reaching the hose. While using the analyzer, the type of fuels that cause the most dirt and how often the probe needs to be cleaned will become evident.

Material Required:

Aerosol can be of automotive carburetor cleaner, Alcohol, Clean rags, Source of compressed air

Procedure:

Wohler A 600


6. Maintenance

1. Remove the probe tube by unscrewing its retaining collar, and then pulling the probe tube from its handle.

CAUTION: Carburetor cleaner attacks plastic and rubber components. Take precautions not to spray cleaner into the probe handle.

2. Clean the probe tube by generously spraying carburetor cleaner through each of the gas channels, while allowing the cleaner to flow out of the probe tip.

3. Then remove all residual cleaner by repeatedly flushing the probe tube with alcohol. Afterwards blow compressed air through the tube until it is dry. Use a clean rag to wipe the outside surface of the probe tube.

4. Remove the probe handle’s end cap and probe filter.

CAUTION: Never blow compressed air into the pressure measuring channel, otherwise permanent damage to the pressure sensor will result.

5. Blow compressed air only through the probe handle’s gas channel until it is clean. Then use a clean rag to wipe the inside surface of the handle’s filter chamber.

6. Reassemble the probe.

Wohler A 600


7. Sensor Replacement

7.1 Sensor Diagnostics

The sensor diagnostics allow the user to determine the status of the sensors.

Do the following to enter the sensor diagnostic:

1. Turn ON the analyzer

2. Touch the DIAG (diagnostic) key as the initial Turn-ON screen is displayed

3. Check status of sensors (see figure 5-4)

7.2 Sensor Replacement

Before changing a sensor ensure that the wireless probe is switched OFF. Use a screwdriver to unlock the last sensor by removing the two screws, see figure 7-1. Pull the sensor module to remove. To unlock the next sensor, proceed as described before. Exchange or add the sensor module you want. When reassem-bling ensure that the COv sensor module is last sensor module ALWAYS. The Wohler A 600 will automatically detect the new or changed sensor module. Note that before making the next combustion test the Wohler A 600 should run a self calibration cycle to check new sensors status.

Figure 7-1: Assembling the sensor modules

NO sensor

COV sensor (100.000 ppm)

COv sensor (4.000 ppm)

COv module always last

Screws to lock sensor modules

O2 sensor

optional combustion air temperature module

7. Sensor Replacement

Wohler A 600


8. Parts and Service

8.1 Wohler A 600 Kits

Complete kits including Wohler A 600 unit, sensors, and standard accessories:

Wohler A 600 (O2 / CO / H2) 6095

Wohler A 600 (O2 / CO / H2 / NO / NO2) 6103

Wohler A 600 (O2 / CO / H2 / NO / SO2) 6104

Complete PC kit including wireless probe unit, sensors, and standard accessori-es for use with PC:

Wohler A 600 (O2 / CO / H2 / NO / NO2 / SO2) 6105

8.2 Replacement Parts

Filters:

Cotton, located in Water Trap 25gr Pack: 4286

Water Stop Filter, pack of 3 9621

Coarse Probe, pack of 5 9632

Service Pack Wohler A 600 6053

Display protection film 58357

8.3 Accessories

Wohler TD 600 high speed printer 4130

heavy duty condensation adaptor 3635

Probe 39“ 9695

Probe 20“ 6056

Probe 12“ 6005

Probe 7“ 6016

Probe 5“ 6017

probe holder and hose assembly w/o Probe 6002

Combustion-Air probes:

2“ 6013

4“ with 5ft. cable 6020

11“ with 5ft. cable 6019


Wohler A 600



Peltier Cooler Sample Conditioner:

Sample Conditioner Unit and Power Supply 4637

Condensate Pump 4636

Printer Paper 4145

Soot Pump Smoke Test Set RP72 9152

9. Sales / Service Centers

United States, Massachusetts

Wohler USA Inc.

20 Locust Street, Suite 205

Danvers, MA 01923

Phone: 978-750-9876 Fax: 978-750-9799

Email: [email protected]

Canada, Ontario

E. S. Gallagher Sales Ltd.

920 Caledonia Rd. Unit 3b

Toronto, ON M6B3Y1 Canada

Phone: 1-800-430-6754

416-789-5385

Fax: 905-569-9712

Internet: www.esgallagher.com

Wohler A 600


10. Warranty

Wohler USA, Inc. (Wohler) warrants to Buyer that at the time of delivery this Product will be free from defects in material and manufacture and will conform substantially to Wohler USA Inc.’s applicable specifications. Wohler’s liability and Buyer’s remedy under this warranty are limited to the repair or replacement, at Wohler’s option, of this Product or parts therefore returned to Seller at the factory of manufacture and shown to Wohler Inc.’s reasonable satisfaction to have been defective; provided that written notice of the defect shall have been given by Buyer to Wohler Inc. within one (1) year after the date of delivery of this Product by Wohler USA Inc. Routine service, calibration and expendable items are excluded from this warranty. Wohler USA Inc. warrants to Buyer that it will convey good title to this Product. Wohler’s liability and Buyer’s remedy under this warranty of title are limited to the removal of any title defects or, at the election of Wohler, to the replacement of this Product or parts thereof that are defective in title.

THE FOREGOING WARRANTIES ARE EXCLUSIVE AND ARE GIVEN AND AC-CEPTED IN LIEU OF (I) ANY AND ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE: AND (II) ANY OBLIGATION, LIABILITY, RIGHT, CLAIM OR REMEDY IN CONTRACT OR TORT, WHETHER OR NOT ARISING FROM WOHLER ’S NEGLIGENCE, ACTUAL OR IMPLIED.

The remedies of the Buyer shall be limited to those provided herein to the ex-clusion of any and all other remedies including, without limitation incidental or consequential damages. No agreement varying or extending the foregoing war-ranties, remedies or this limitation will be binding upon Wohler USA Inc. unless in writing, signed by a duly authorized officer of Wohler USA .

Notice:

Product improvements and enhancements are continuous, therefore the specifi-cations and information contained in this document may change without notice. Wohler USA, Inc. shall not be liable for errors contained herein or for incidental or consequential damages in connection with the furnishing, performance, or use of this material.

No part of this document may be photocopied, reproduced, or translated to an-other language without the prior written consent of Wohler USA, Inc.

Copyright © 2006, Wohler USA, Inc., all rights reserved.

9. Sales / Service Centers

Wohler A 600


Appendix A – Peltier Cooler - Gas Sample Conditioner

A.1 Introduction

The Peltier Cooler—Gas Sample Conditioner consists of the Peltier Cooler and Power Supply (P/N 4637) and the optional Condensate Pump (P/N 4636) for long duration sampling.

The function of the Gas Sample Conditioner is to remove water vapor from the flue gas sample, thereby preventing the formation of water droplets inside the probe hose. If water droplets form inside the hose, a portion of the gas sample could be removed by the water, resulting in lower-than-actual readings of NO2 and SO2. Water vapor is removed from the flue-gas sample by passing the sam-ple through a Peltier cooler where the sample is chilled, causing the water vapor contained in the gas sample to be removed (condensed) from the sample. The water that was condensed from the gas sample is then pumped out of the Peltier cooler and into a water trap. The conditioned flue-gas sample is then delivered to the combustion analyzer for analysis.

For continuous sampling periods of up to 6 hours in duration or when sampling NO2 or SO2, the Peltier cooler is required. For extended sampling times beyond 6 hours, it is recommended that the Condensate pump also be used.

Figure A-1: Gas Sample Conditioner System

Appendix A

Peltier Cooler on Probe Condensate Pump

Probe Assembly

Peltier Cooler

DC Power cord to Pel-tier Cooler

Inlet hose (from pump)

Pump bowl

DC Power cord to power

Wohler A 600


A.2 Technical Data

Peltier Cooler:

InletSampleDewPoint 149°F(65°C)max.

OutletSampleDewPoint 18°F(10°C)min.belowambient

Cooling Power 10 W

EnvironmentTemperature 32to104°F(0to40°C)

Weight 8.5 oz (240 g)

Condensate Pump:

Sample Flow Rate 1.5 LPM @ STP

Length of Hose 6.6 ft (2 m)

Reservoir Storage 50 ml

EnvironmentTemperature 32to104°F(0to40°C)

Weight 12.7 oz (360 g)

Power Supply:

Input 100 to 240 VAC, 50/60 Hz

Output 9 VDC, max. @ 4 A, max.

A.3 Equipment Setup

To attach the Peltier cooler to the probe and hose assembly, remove the plastic end cap from the rear of the probe, then insert the cooler’s inlet connector. Make sure the coarse filter is placed between the cooler and probe. Connect the power supply to the cooler. Care should be taken to observe the amount of water in the coolers filter. Replace the filter as needed when wet.

If the Condensation pump is to be used, attach the pump’s inlet hose to the bot-tom of the Peltier cooler by removing the plug on the Peltier cooler, leaving the cotton filter in-place. Water that is condensed from the flue-gas sample will be pumped into the condensate pump’s water trap through this hose. Note that the condensate pump can be placed in an upright, horizontal, or hanging position. A magnet mounted in the base of the pump allows the pump to be attached to overhead ductwork or appliance jacket.

Connect the power supply’s DC output connector to the condensate pump and then connect the condensate pump’s DC output power connector to the Peltier cooler. The Peltier cooler and its associated condensate pump are started by plugging the power supply into a source of AC power that is between 100 and

Appendix A

Wohler A 600


At the conclusion of the combustion test, remove the probe from the stack; un-plug the power supply and empty the pump’s water trap.

A.5 Maintenance

A.5.1 Probe

The probe’s coarse filter needs to be inspected at regular intervals for dirt con-tamination. Replace filter as necessary by first pulling out the Peltier cooler from the probe and then exchanging the filter with a new one.

A.5.2 Peltier Cooler

The cooler’s wadding filter needs to be inspected at regular intervals for dirt con-tamination. Replace filter as necessary by first pulling off the filter chamber’s top cap and then exchanging the filter with a new one.

A.5.3 Condensate Pump

CAUTION! The condensed water will be warm and slightly acidic. Take all necessary precautions to prevent the water from splashing into your eyes or contacting your skin.

Empty the water trap by first holding the pump with its water trap facing down-wards, and then twisting the water trap 90 degrees (either clockwise or counter-clockwise) to free it from the pump base. Empty the water trap, and then reattach it to the pump. When reattaching the water trap, make sure that its O-ring is

240 VAC, 50/60 Hz. Connect the probe hose assembly between the probe and the analyzer.

A.4 Operation

When ready to conduct a combustion efficiency test, plug in the power supply of the Gas Sample Conditioner. The condensate pump should start running and the Peltier cooler’s red LED should begin to turn ON and OFF as the cooler is cycled. Note that the cooler’s operating time changes according to its temperature. Set up and configure the combustion analyzer as described in its instruction manual. Then insert the probe into the flue stack and begin testing.

During the combustion test, the condensed water vapor from the flue gas will ac-cumulate inside the pump’s water trap. If the water level begins to approach the ends of the tubes inside the water trap, stop the test and empty the water trap as described in Section A.5 Maintenance.

CAUTION! The probe tube is hot! In the following step, be sure to allow the probe tube sufficient time to cool before handling.

Appendix A

Wohler A 600


Appendix A

properly positioned inside the grove in the pump base.

The pump’s wadding filter needs to be inspected at regular intervals for moisture and dirt contamination. Replace filter as necessary by first unscrewing the filter chamber cap and then exchanging the filter with a new one.

A.6 Replacement Parts

Peltier Cooler & Power Supply:

Complete Assembly with Power Supply 4637

AC Power Supply with 3-Wire Cord 21564

Plastic End Cap 9647

Filter Wadding 21208

Condensate Pump:

Complete Assembly 4636

Water Trap 21089

Plastic Screw-On Cap 21096

Filter Wadding (Qty. 1) 30125

Plastic Cap with Drain Hose 21087

Wohler A 600


Quickstart Guide

Quickstart Guide

STEP 1 Switch ON the Wohler A 600 and the wireless probe

STEP 2 Position the probe into the stack by using a cone

STEP 3 Start searching for the core temperature during Wohler A 600 self calibration time

STEP 4 Observe readings on the Combustion or Emission screen and hit STOP when stable

STEP 5 Print or save the report

STEP 6 Switch OFF the Wohler A 600 and drain the condensate

Wohler A 600


Quick Start Guide

PRINT CURRENT DISPLAY

SAVE AND SETUP MENU

RESTART SAMPLING TOGGLE PUMPTOGGLE COMBUSTION / EMISSION SCREEN

FUEL SELECTION

FUEL SELECTION

GRAPH/MODE

ZERO PRESSURE FREEZE CURRENT DISPLAY

TOGGLE PUMP

TOGGLE COMU-STION/EMISSION SCREEN

Wohler A 600 - Image Inspection Services...

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