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Contents H25-IR
ii Instruction 3015-4342
3.4 CAL Factor.........................................................................................................................................25
3.4.1 Simulating Other Internal Leak Source Gas Types Using the CAL Factor..................25
3.4.2 Improving PPM Measurement Accuracy using the CAL Factor .....................................26
3.4.3 Adjusting the CAL Factor ..................................................................................................27
3.5 Restoring Factory Calibration..........................................................................................................27
4 Operation....................................................................................................................................29
4.1 Instrument Location .........................................................................................................................29
4.2 Using the H25-IR ..............................................................................................................................29
4.2.1 Power ...................................................................................................................................29
4.2.2 Initial Setup ........................................................................................................................29
4.2.3 Range Selection...................................................................................................................30
4.2.4 Setup Selection ...................................................................................................................30
4.2.5 Volume Adjustment............................................................................................................31
4.2.6 Searching for a Leak...........................................................................................................31
4.2.7 Measuring the Leak Rate...................................................................................................32
4.2.8 Measuring the PPM Level..................................................................................................32
4.2.9 Logging Measured Readings..............................................................................................33
4.2.10 Working with Logged Measurements................................................................................33
4.2.10.1 Viewing Logged Measurements .....................................................................33
4.2.10.2 Clearing the Log..............................................................................................34
4.2.10.3 Viewing the Total of all Logged Measurements............................................34
4.2.10.4 Setting the Log Limit......................................................................................34
4.3 What to Do when a Fault Occurs .....................................................................................................35
4.4 What is PCHK?..................................................................................................................................35
4.5 RS-232 Communication ....................................................................................................................35
5 Maintenance...............................................................................................................................37
5.1 Diagnostics Menu ..............................................................................................................................37
5.1.1 Sensor Data.........................................................................................................................37
5.1.2 Last Fault............................................................................................................................38
5.1.3 IR Emitter ...........................................................................................................................39
5.1.4 Pressure...............................................................................................................................39
5.2 Factory Menu.....................................................................................................................................39
5.2.1 Auto Gain ............................................................................................................................40
5.2.2 DIGIPOT .............................................................................................................................40
5.2.3 Leak Rate ............................................................................................................................40
5.2.4 Leak Gas..............................................................................................................................40
5.2.5 Leak Temp...........................................................................................................................40
5.2.6 Leak TEMPCO....................................................................................................................41
5.2.7 Sensor Cal ...........................................................................................................................41
5.2.7.1 Pressure Sensor Calibration Screen ..............................................................41
5.2.7.2 Flow Rate Sensor Calibration Screen (Factory Calibration)........................41
5.2.7.3 Box Temperature Calibration Screen ............................................................42
5.2.8 Model Select ........................................................................................................................42
5.2.9 Probe Type...........................................................................................................................42
5.2.10 Firmware.............................................................................................................................42
5.3 Flashing Memory...............................................................................................................................43
5.4 Part Replacement..............................................................................................................................46
5.4.1 Removing the Top Cover ....................................................................................................46
5.4.2 Fuse Replacement...............................................................................................................47
5.4.3 Probe Tip Filter & O-Ring Replacement...........................................................................47
5.4.4 Internal Filter Replacement ..............................................................................................48
6 Parts and Service......................................................................................................................49
6.1 Replacement Parts ............................................................................................................................49
6.2 Service Centers..................................................................................................................................50
7 Specifications ............................................................................................................................51