RKI Instruments GX-2012 Manual - Manual (Page 103)

GX-2012 Operator’s Manual Leak Testing • 95
Check Mode” on page 84. Select the desired display range. In the example
below, 500 ppm has been selected. Press and hold the (SHIFT)T button,
then press and hold the AIRS button and hold both until you hear a beep.
The Station ID Select Screen will display and the current station ID will
be flashing.
NOTE: If the gas levels reach a warning or alarm condition while in this
screen, the GX-2012 will go into alarm.
2. Use the (SHIFT)T and AIRS buttons to scroll to the desired station ID,
then press and release the POWER ENTER button to continue to the Base
Reading Screen. To return to the Station ID Select Screen without taking a
base reading, press and release the RESET SILENCE button.
3. In order to get a base, or background, reading, take the instrument a few
feet away from where you intend to test. To save the base reading, press
and release the POWER ENTER button.
NOTE: If the gas concentration exceeds the display range value without
exceeding 5000 ppm, the full scale display range value will be
displayed but the actual gas reading at that time will be recorded
when you press and release POWER ENTER. For example, if the
display range is 500 ppm but the gas level is 2300 ppm, the display
will read 500 ppm but the instrument will save a reading of 2300
ppm.
If the gas concentration exceeds 5000 ppm in the Base Reading
Screen, the instrument will go into an overscale alarm. The full scale
display range value will be displayed but OVER will be recorded
S Id
001
SEL
0
500
ppm
ppm
LEAK CK MODE
CH
4
BASE