GX-3R Pro Operator’s Manual Appendix B: Maintenance Mode • 170
Appendix B: Maintenance Mode
Overview
This appendix describes the GX-3R Pro in Maintenance Mode. The GX-3R Pro is factory-set to
suit most applications. Update settings in Maintenance Mode only if required for your specific
application. Maintenance Mode items and their factory settings are listed in table below.
Maintenance Mode
Menu Item
Description
GAS CAL (page 174) Perform an air adjust, perform a span adjustment, change the calibration values,
set the cylinder group.
AIR CAL Perform a fresh air adjustment.
CO2 ZERO
CAL*
Perform a zero adjustment on the CO
2
channel using 100%
nitrogen.
AUTO CAL Perform a span adjustment, set the calibration gas concentration,
and set the cylinder for each gas.
AUTO
CAL CYL
X
Perform an automatic span adjustment on the
gases selected for Cylinder X.
START
MEA-
SURE
Begin the warmup sequence and enter Measuring
Mode.
SETTING
CAL-P
Set the calibration gas concentration for each gas.
CYL
SETTING
Assign a cylinder (A-E) to each gas. Multiple
gases can be assigned to the same cylinder.
ESCAPE Return to the AUTO CAL menu item.
ESCAPE Return to the GAS CAL menu item.
GAS TEST (page 174) Apply gas to test sensor response and observe alarm indications without an alarm
event being recorded.
SENSOR DATE (page 176) View the replacement date for each sensor and the battery and/or set the replace-
ment date for each sensor or the battery to the current date.
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