GX-3R Pro Operator’s Manual Chapter 5: User Mode and Calibration • 76
2. Install the calibration cup onto the GX-3R Pro. Use the label and imprinting to make sure that
the calibration cup gets installed in the correct orientation relative to the GX-3R Pro. Be sure
the calibration cup is pushed on all the way.
3. Use the tubing to connect the regulator to the inlet of the calibration cup.
Performing a CO2 ZERO CAL
1. While in User Mode, use AIR to place the cursor next to GAS CAL.
2. Press and release POWER MODE. The Gas Cal menu appears.
3. Use AIR to place the cursor next to CO2 ZERO CAL.
4. Make sure the GX-3R Pro has been turned on for at least 45 seconds before continuing.
5. Press and release POWER MODE.
CO/H
2
S LEL O
2
TOXIC
GX-3R Pro
AIR
POWER
MODE
Inlet
FRONT
Figure 9: Calibration Cup Installation
MAINTE 7:49
BUMP TEST
GAS CAL
CAL SETTING
USER MODE
MAINTE 7:49
AIR CAL
CO2 ZERO CAL
AUTO CAL
GAS CAL
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