RKI Instruments GX-2009 Manual - Manual (Page 24)

19 • Operation GX-2009 Operator’s Manual
and TWA values are cleared when the unit is turned off.
To enter Display Mode and view items or reset the peak readings, do the
following:
1. Make sure the GX-2009 is in the Measuring Mode Normal Operation
screen. The GX-2009 must be in the Normal Operation Screen for you
to access Display Mode.
2. Press and release the POWER MODE button to enter Display Mode.
The backlight will turn on and the PEAK Screen will appear.
The peak readings since the GX-2009 was turned on are displayed for
combustible gas, CO, and H2S. The minimum reading is displayed for
oxygen.
3. If you do not want to clear the peak readings, continue to the next step.
If you want to clear the peak readings, press and hold the AIR button.
After a couple of seconds, the LCD will prompt you to hold the AIR
button with the following screen.
Hold the AIR button until the following screen appears, then release it.
The peak readings will be cleared and the unit will return to the PEAK
Screen.
4. Press and release the POWER MODE button again to proceed to the
STEL Screen. The STEL values for CO and H
2
S are displayed.
5. Press and release the POWER MODE button again to proceed to the
TWA Screen. The TWA values for CO and H
2
S are displayed.
6. Press and release the POWER MODE button again to proceed to the
Full Scale Screen. The detection range full scale value for each channel
is displayed.
0 20.9
PEAK
CO ppm H2S ppm
CH4 %LEL OXY vol%
0 0.0
C L E A r
HOLD AIR
C L E A r
RELEASE