RKI Instruments GX-94 - Manual (Page 36)

Page 35 GX-94 Operator’s Manual
The GX-94’s calibration menu includes two methods of calibration: auto
calibration or single calibration.
• Auto Calibration: This method allows you to calibrate all four sensors
simultaneously. It is designed for use with the RKI Four gas
Calibration Cylinder and is the quickest and easiest method to
calibrate the GX-94.
• Single Calibration: This method allows you to calibrate one sensor at
a time. Use this method if you are only calibrating one or two
sensors or if you are using multiple single gas cylinders to calibrate.
Calibrating with the Auto Calibration Method
This section describes calibration using the auto calibration method. To
calibrate using the single calibration method, see Calibrating with the
Single Calibration Method later in this section.
1. Use the AIR/ ▲ and SHIFT/ ▼ buttons to select the AUTO CAL
menu option. The “1” will be flashing.
2. Press the ON/OFF/INPUT button to continue in the auto calibra-
tion menu. The display will ask you if you want to continue with
Auto Calibration. Press AIR/
▲ to continue or DISPLAY/(ADJ.) to
return to the main menu.
3. If you press AIR/ ▲ , the Calibration Values screen appears.
.
The gas concentrations displayed in the Calibration Values screen
must match the gas concentrations listed on the Four Gas
Calibration Cylinder. If all concentrations match, go to step 8. If
C 50LEL
A 12.
0 %
L 25. 0 PPM
. 50PPM