187 • Appendix C: Gas Select Mode GX-3R Pro Operator’s Manual
Appendix C: Gas Select Mode
Overview
This appendix describes the GX-3R Pro in Gas Select Mode. The GX-3R Pro is factory-set to suit
most applications. Update settings in Gas Select Mode only if required for your specific
application. A description of the Gas Select Mode items is shown in table below.
Entering Gas Select Mode
WARNING: The GX-3R Pro is not in operation as a gas detector while in Gas Select Mode.
1. Take the GX-3R Pro to a non-hazardous location and turn it off if it is on.
2. Press and hold AIR, then press and hold POWER MODE. You will hear a beep after one
second. Continue to hold the buttons down.
3. You will hear a second beep. Continue to hold the buttons down.
4. When you hear a third beep, release the buttons.
Menu Item (Page # of
Description)
Description
GAS COMBO (page 189) Turn channels on or off and change target gas for each channel.
SAVE ALARM-P (page 192) Set the current alarm points as the default alarm points.
DISP MAX SPAN (page 193) ON
: Maximum span screen appears after a successful calibration.
OFF
(factory setting): No maximum span screen appears.
STEALTH (page 193) STEALTH ON
: No backlight, LED, or buzzer operation.
STEALTH OFF (factory setting)
: Backlight, LED, and buzzer operate
normally.
This setting has no effect unless STEALTH is set to ON.
VIBRATION ON
: Vibrator activates for alarm conditions.
VIBRATION OFF (factory setting)
: Vibrator does not activate in any situ-
ation.
CHANGE LEL (page 194) STANDARD
(factory setting): Apply standard settings for lower explo-
sive limit’s ppm level.
IEC
: Apply IEC settings for lower explosive limit’s ppm level.
ISO
: Apply ISO settings for lower explosive limit’s ppm level.
START MEASURE (page 196) Enter Measuring Mode
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