180 • Calibrating the Gas Tracer
Gas Tracer Operator’s Manual, CSA Version
NOTE:
These methods only apply to the standard 3 sensors and the vol% sensor
(if installed). The PPM sensor must be calibrated independently using
PPM CAL. See “Calibrating and Bump Testing the PPM Combustible
Sensor” on page 191 for instructions.
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 182.
NOTE:
If the combustible gas channels are calibrated to a gas other than
methane, use an appropriate multigas cylinder to fill the gas bag or use
single calibration to calibrate the combustible channels.
1. You may only calibrate either the standard 3 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. Fill the gas bag with calibration gas as described in “Filling the Gas Bag” on
3. 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.
4. Use the AIR
▲
or (SHIFT)
▼
buttons to scroll between the 3-gas and the
%volume combustible gas calibration values screens.
5. The gas concentrations displayed in the calibration values screens must match
the gas concentrations listed on the calibration cylinders. If all concentrations
match, go to step 13. If one or more concentrations do not match, continue with
step 6.
50
12.0
50
%LEL
%
ppm
MAINTENANCE
CH
4
O
2
AUTO CAL
CO
100
vol%
MAINTENANCE
CH
4
AUTO CAL
