42 • Calibration Mode
GX-2009 Operator’s Manual
5. Push the adapter plate onto the GX-2009’s sensor face. Make sure the adapter plate is
oriented as shown in Figure 12 below with the sensor names on the adapter plate matching
up with the sensor names on the instrument.
Figure 12: Installing the Adapter Plate, One Cal
6. Press and release the POWER MODE button, the current gas reading for the selected
channel is displayed.
7. For toxic gas cylinders (like cylinders containing H
2
S), it is important to vent the regulator
while installing it onto the cylinder. Venting the regulator during installation helps prevent
air from getting into the cylinder and degrading the gas. Open the regulator by turning the
knob counterclockwise and install it onto the cylinder.
8. Allow the gas to flow for two minutes.
9. Adjust the display gas reading using the AIR button to match the calibration cylinder’s
target gas concentration. See Step 5 on page 33 for instructions to adjust a parameter using
the AIR button.
10. Press and release the POWER MODE button.
Flow
%L
E
L
H
2
S
O
2
To Fixed Flow
Regulator
CO
AIR
POWER
MODE
RKI GX-2009
H
2
S CO %LEL O
2
Adapter Plate
0
ONE CAL
CH4 %LEL
www.calcert.com
1.800.544.2843
0
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