GX-2012 Operator’s Manual
Calibrating the GX-2012 • 151
NOTE:
The following screens illustrate a four-gas GX-2012 with both a % LEL and a
% volume combustible sensor as examples only. Your GX-2012 may display
slightly different screens.
The GX-2012’s calibration menu includes two methods of calibration:
auto calibration and single calibration.
•
Auto Calibration:
This method allows you to calibrate the combustible gas (%LEL
sensor only), OXY, H
2
S, and CO sensors simultaneously. It is designed for use with
the RKI 4-gas calibration cylinder and is the quickest and easiest method to calibrate
the GX-2012. If installed, you may also calibrate the %volume sensor separately from
the standard four.
•
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, if you are calibrating only the
%volume combustible sensor, or if you are not using the RKI 4-gas calibration
cylinder.
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” on page 154. These instructions assume you are using a 4-gas
cylinder and a % volume methane cylinder.
NOTE:
If the combustible gas channel(s) are calibrated to a gas other than methane, use
an appropriate multigas cylinder or use single calibration to calibrate the
combustible channel(s).
1. You may only calibrate either the standard 4 sensors or the % volume combustible gas
sensor at a time. Once you are finished, you are returned to the initial AUTO CAL
screen and must begin the auto calibration process again.
2. Use the AIR
and (SHIFT)
buttons to scroll to the
AUTO CAL
menu item. Press
and release the POWER ENTER button to display the calibration values screen. If
you want to exit back to the main menu without completing a calibration, press and
release the DISPLAY (ADJ) button.
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