Bacharach H25-IR manual Measuring the Leak Rate, Measuring the PPM Level

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Operation	H25-IR

4.2.7 Measuring the Leak Rate

After finding a leak, a measurement can be made to determine its leak rate as follows:

1.Press the MODE button to display “MERS” at the bottom of the Data Display screen or “MEASR” on the Smart probe.

2.Allow the instrument to sample fresh air. The gas reading must be “0.00” before proceeding. If necessary, press the ZERO button to zero the reading while sampling fresh air.

3.While observing the gas reading, hold the probe tip over the leak source until the reading stabilizes. In the examples below, a leak rate of 2.80 Oz/yr of R134a is being measured.

Instrument Display

Oz/yr

R134A

SETUP

SM MERS

Smart Probe Display

2.80SM MEASR(1)

4.2.8 Measuring the PPM Level

The H25-IR can be used to measure a gas’s ppm level within a confined space, and display that level within the range of 0 to 1,000 ppm. Set up the instrument to measure ppm levels as follows:

NOTE: Although the H25-IR can display ppm levels above its rated range of 0 to 999 ppm, the accuracy of the reading above 999 ppm is unspecified. Refer to Section “7 Specifications.”

1.Set up the instrument’s Leak Units to ppm as described in Section 2.4.2 Leak Units.

2.Press the MODE button to display “MERS” at the bottom of the Data Display screen or “MEASR” on the Smart probe.

3.Allow the instrument to sample fresh air. The gas reading must be “00.0” before proceeding. Press the ZERO button to zero the gas reading while sampling fresh air.

4.Place probe in area to be measured. In the example below, 38.0 ppm of R134a is being measured. Note that the display is auto ranging, causing the decimal point to turn off above 99.9 ppm.

Instrument Display

ppm

R134A

SETUP

SM MERS

Smart Probe Display

38.0SM MEASR(1)

32	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 ClockConfiguring the Setups Function Setup NameRange 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 Procedure CAL FactorMaterial Required 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 LevelLogging Measured Readings Working with Logged MeasurementsLog Menu Clearing the Log What to Do when a Fault Occurs What is PCHK?Diagnostics Menu RS-232 CommunicationOperation H25-IR Maintenance Diagnostics MenuSensor Data Last Fault Factory Menu IR EmitterPressure Factory Factory MenuAuto Gain Leak RateLeak Gas Leak TempLeak Tempco Sensor CalModel Select Probe TypeFirmware 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