Auto Gain; Factory Menu; Digipot; Leak Rate - Bacharach H25-IR Operation & Maintenance Manual

H25-IR

5.1.7 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 Factory Menu

The Factory menu is used to set up or troubleshoot the instrument. This menu appears only when activated by
factory personnel or service technicians who know the correct activation procedure.
When activated, display the Factory menu by first pressing both the ENT and ESC buttons on either the
instrument's front panel or Smart probe at the same time to display the Main menu. Next, use the Up and Down
buttons to highlight "FACTORY" and then press ENT to display the Factory menu.
Main Menu:
SYSTEM
LOG
SETUPS
CAL DATA
DIAGNOSTICS
FACTORY
5.2.1 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.

5.2.2 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.
Instruction 3015-5286
Factory Menu:
DIGIPOT
LEAK RATE
LEAK GAS
LEAK TEMP
LEAK TEMPCO
SENSOR CAL
MODEL SELECT
PROBE TYPE
FIRMWARE
Operation
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