RKI Instruments GX-2012 Quick Reference Manual

1. Turning the GX-2012 ON

Note: This start up sequence assumes the following maintenance mode items 

are turned on: LNCH BRK, ID DISP, CL RMNDR, and BP RMNDR  

Set to CONFIRM

a. Attach the rubber nozzle or sample hose to the GX-2012’s

quick connect inlet fitting.

b. If a hose is used, attach probe to hose.

c. To turn on the GX-2012, press and briefly hold the POWER

ENTER button until you hear a beep. The GX-2012 will begin

its warm up sequence. The following screens may appear

during the warm up sequence:

CAL TIME REMAINING (factory set to appear)

•  If the instrument if overdue for calibration, the GX-2012

displays CAL. Press the RESET SILENCE button to

continue.

•  Calibration should be performed as soon as possible.

BUMP TIME REMAINING (does not appear with

factory setting)

•  If the instrument is overdue for bump testing, the

GX-2012 displays “tESt B--Limit”. Press the RESET

SILENCE button to continue.

•  A bump test should be performed as soon as possible.

SENSOR FAILURE

•  If the GX-2012 experiences a sensor failure during start

up, the LCD will display FAIL and indicate which sensor(s)

failed. To continue operation press and release RESET

SILENCE to acknowledge the failure. Gas readings for

that sensor will be replaced by “- - -”.

•  It is necessary to replace the sensor and recalibrate

before the GX-2012 is used.

2. Measuring Mode Screen

a. After warm up the GX-2012 will display the following: CH4

0%LEL, OXY 20.9%, CO 0ppm, H2S 0.0ppm (some readings

may not appear if sensors are not installed).

b. If the readings are not displaying fresh air values as above,

you must perform a Fresh Air Adjustment.

Quick Reference Guide For Model GX-2012

Note:  Turn on and adjust the GX-2012 gas monitor in a known fresh air area.