RKI Instruments GX-2001 Manual - Manual (Page 27)

Model GX-2001 Operator’s Manual Displaying and Setting the Alarm Points • 22
Display and Adjust the Alarm Points
1. Make sure the Model GX-2001 is turned off. The LCD should be blank.
2. Press and hold the AIR button, then press and hold the MODE/POWER
button.
3. As soon as segments appear on the display (approximately one
second), release the AIR button. When the unit “beeps,” release the
MODE/POWER button to put the Model GX-2001 into Alarm Point
Adjustment Mode. The LCD should show the Alarm 1 setting for O
2
and
the battery level.
NOTE: If the LCD should show “CAL,” the Model GX-2001 is in
Calibration Mode. You will need to press and hold the MODE/
POWER button to turn off the unit. Begin again with step 2 above.
4. Use the MODE/POWER button to cycle through the alarm points of the
target gasses. Oxygen is displayed first followed by H
2
S, CO, then HC.
Use the AIR button to increase the alarm point and the DISP button to
decrease the alarm point. When using the MODE/POWER button,
press it once to display the next reading. If you press and hold the
MODE/POWER button, you may turn off the unit.
NOTE: You can only cycle through the target gasses once before the
Model GX-2001 goes into Start-up Mode followed by Measuring
Mode. If you want to cycle through the gasses again, press and
hold the MODE/POWER button to turn off the Model GX-2001.
Then begin with step 2 above to put the unit back into Alarm Point
Adjustment Mode.
5. When you are finished viewing or adjusting the alarm point settings,
press the MODE/POWER button repeatedly until the ROM number for
your unit appears on the LCD. (the ROM is the component that contains
the software that runs the Model GX-2001.) The Model GX-2001 will
then go into Start-up Mode followed by Measuring Mode.
O2
1 9 . 5
L O
%
Target gas Battery
charge
Gas concentration
Figure 4: LCD in Alarm Adjustment Mode
Alarm point
.