Bacharach H25-IR manual Auto Gain, Leak Rate, Leak Gas, Leak Temp

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Maintenance

H25-IR

 

 

5.2.1 Auto Gain

DIGIPOT=197

IR VOLT=4.2000

IMPORTANT! The instrument must be sampling fresh air (zero gas) when the Auto Gain function is selected.

Selecting the Auto Gain function automatically sets the IR Detector’s voltage to its baseline 0 ppm level by controlling the instrument’s digital potentiometer (DIGIPOT) circuit.

5.2.2 DIGIPOT

DIGIPOT=197

IR VOLT=4.2000

IMPORTANT! The instrument must be sampling fresh air (zero gas) when adjusting the DIGIPOT value.

The DIGIPOT function allows manual and a more precise adjustment of the digital potentiometer, which controls the voltage of the IR Detector. Use the Up and Down buttons to adjust DIGIPOT value until the IR VOLT reading is 4.200 ±0.0500 volts. Press ENT to save the new DIGIPOT value.

5.2.3 Leak Rate

LEAK RATE 25.5 g/yr

The Leak Rate value is set to match the leak rate of the internal leak source as indicated on the tag attached to the leak source. Use the Left and Right buttons to move the blinking cursor across the screen to highlight the digit to be modified, and then use the Up and Down buttons to modify that digit. Press ENT to save the new Leak Rate value.

IMPORTANT! Be sure to enter the leak rate using the same units of measure as displayed on the LEAK RATE screen. In this example, the units of measure is g/yr. If your leak source is marked in Oz/yr, then multiply that value by a factor of 28.35. For example: If the leak source is marked 0.9 Oz/yr, then enter a leak rate of (0.9 x 28.35=) 25.5 g/yr.

5.2.4 Leak Gas

LEAK GAS

<

R134A

R401A

R402A < R402B

The Leak Gas setting is set to match the gas contained in the internal leak source as indicated on the tag attached to the leak source. Use the Up and Down buttons to highlight the correct gas, and then press ENT to select that gas.

5.2.5 Leak Temp

LEAK TEMP 0 23.9degC

The Leak Temperature value is set to match the temperature of the internal leak source at its time of manufacture as indicated on the tag attached to the leak source. Use the Left and Right buttons to move the blinking cursor across the screen to highlight the digit to be modified, and then use the Up and Down buttons to modify that digit. Press ENT to save the new Leak Temp value.

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Instruction 3015-4342

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Contents H25-IR Infrared Refrigerant Gas Leak DetectorWarranty Register Your Warranty by VisitingTable of Contents Parts and Service Safety Precautions Hazard SymbolsAC Power and Grounding IntroductionCleaning Explosive AtmosphereWorking Inside the Instrument Misuse and Modifications to Instrument Case of MalfunctionOrdering Information Unpacking and Initial ChecksFeatures and Capabilities Functional Overview Leak Rate = Flow Rate x Gas ConcentrationNames and Functions of Components Front ViewRear View Interior Standard Probe Standard Probe with LED and Programmable PushbuttonSmart Probe Smart Probe Keylock Function Menu System System MenuConnecting the Probe Connecting the AC Power CordPreparing for Operation Turning on the InstrumentSystem Setup Main Menu System Setup MenuGas Type Leak UnitsRelays 4 4-20 mA LoopPchk Mode Reset DefaultsBrightness ClockRange Configuring the Setups FunctionSetup Name Feedback Mode SetpointCalibration Search Auto ZeroTypical Relay 1 Wiring External Relay ConnectionsMA Current Loop Connector 4-40 mA Current Loop ConnectionPreparing for Operation H25-IR Calibration Selecting Internal or External CalibrationInternal Calibration Selection Calibration Data MenuExternal Calibration Selection and Setup CAL Internal CalibrationExternal Calibration Material Required ProcedureCAL Factor Improving PPM Measurement Accuracy using the CAL Factor Adjusting the CAL Factor Restoring Factory CalibrationCalibration H25-IR Using the H25-IR PowerInitial Setup OperationSetup Selection Range SelectionVolume Adjustment Searching for a LeakMeasuring the Leak Rate Measuring the PPM LevelLog Menu Logging Measured ReadingsWorking with Logged Measurements Clearing the Log What to Do when a Fault Occurs What is PCHK?Diagnostics Menu RS-232 CommunicationOperation H25-IR Sensor Data MaintenanceDiagnostics Menu Last Fault Factory Menu IR EmitterPressure Factory Factory MenuAuto Gain Leak RateLeak Gas Leak TempLeak Tempco Sensor CalFirmware Model SelectProbe Type Flashing Memory Items RequiredSelect Setup Communications Select File Load Flash Image Part Replacement Removing the Top CoverFuse Replacement Probe Tip Filter & O-Ring ReplacementInternal Filter Replacement Parts and Service Replacement PartsService Centers United StatesSpecifications CFCs, HCFCs, HFCs and HalogensSpecifications H25-IR Appendix a Factory Defaults ContinuousAppendix a H25-IR H25-IR Appendix a Headquarters Hunt Valley Circle, New Kensington, PA
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