Bacharach H25-IR Operation & Maintenance Manual

Also see for H25-IR: Product catalog Specifications Instruction

Contents

Bacharach H25-IR Operation & Maintenance Manual Manual pdf 35 page image

H25-IR OperationInstruction 3015-5286 29Gas MeasurementLeak UnitsGas Type ModeSetup Name (first 8 characters)Range & ModeGraphical Display of Gas Level4 Operation4.1 Instrument LocationThe H25-IR Refrigerant Gas Leak Detector should be placed on a flat, horizontal surface such as a bench ortable top when in use.When searching for leaks, the instrument does not need to be in a gas-free area as the instrument has theability to automatically zero-out background gases and still be able to locate gas leaks.When making leak-rate measurements, the instrument needs a location where the air is clean and free of thegas being monitored  this is necessary for zeroing purposes. If the area is contaminated, then a fresh-airsource (e.g., fresh air piped in from the outside) must be made available so the operator can manually zero theinstrument before making a measurement.4.2 Using the H25-IR4.2.1 PowerPlug the instrument into the nearest AC outlet (100 to 240 VAC, 50/60 Hz) or use the battery pack (dependingon your model number), and then set the rear panel power switch to its ON position. After power up, theinstrument requires 120 seconds to warm-up. A detailed description of the front panel display screens that areshown during turn-on and warm-up begins in Section 2.3 Turning ON the Instrument (page 12).4.2.2 Initial SetupAt this time the H25-IR should already be set up as described in Section 2 Preparing for Operation.After warming up, the instrument’s Data Display screen will show the current Gas Measurement, Leak Units,Gas Type, Setup Name, Range, and Mode of Operation. In addition, a graphical display of the relative gas levelis provided by a bar graph at the bottom of the screen whose length increases up the screen as the gas levelincreases. An audible tone may also be heard whose pitch increases in frequency as the gas level increases.Note that the sensitivity of the bar graph and audible tone for any given gas level is dependent on the Rangesetting.When using the Smart probe, its LCD will show the current Gas Measurement, Range, Mode of Operation, andSetup Number in parentheses. If the probe contains a red LED, the blink rate of the LED will increase as thegas level increases. Note that the sensitivity of the LED’s blink rate for any given gas level is dependent on theRange setting.Instrument Display Smart Probe DisplayThe Leak Units can be changed per Section 2.4.2 Leak Unit; the Gas Type changed per Section 2.4.1 GasType; the Setup changed by pressing the SETUP button; the Range changed by pressing the RANGE button;and the Mode changed by pressing the MODE button. Note that if the Gas Type is changed during operation,the Setup Name and Number changes to a dash (), indicating that the previously selected Setup is no longervalid.0.00 SMSRCH (1)Range(Setup No.)Oz/yrR134ASETUPSM SRCH