RKI Instruments GX-94 - Manual (Page 39)

GX-94 Operator’s Manual Page 38
2. Press the ON/OFF/INPUT button to display the HC CAL. screen.
The gas reading is flashing
2. Screw the regulator onto the cylinder. The gas begins to flow.
Note
The combustible gas sensor is a general hydrocarbon sensor
that responds to most flammable gases; the response will
vary depending upon the substance. For best results, cali-
brate the GX-94 to the target gas.
3. Allow the gas to flow for one minute. After one minute, if the read-
ing does not correspond to the calibration gas concentration, press
the AIR/
▲ button to increase the reading, or the (SHIFT)/ ▼ button
to decrease the reading. The GX-94 will beep each time a switch is
pressed.
4. When the reading is correct, press the ON/OFF/INPUT button. The
display will read HC CAL. END , then automatically return to the
main menu.
5. Unscrew the regulator from the cylinder.
6
Repeat steps 1 through 5 for any other channels you want to cali-
brate. Make sure you use an appropriate calibration cylinder for
each channel.
CAUTION
When calibrating the oxygen channel, the menu item
HC CAL.
0 LEL
APPLY/GAS/
ADJ/INPUT