Gas Tracer Operator’s Manual, CSA Version
Using Maintenance Mode • 115
5. When the unit tells you to release the AIR
▲
button, release it. The unit will
count down from 8 as it performs the fresh air adjust.
Once it has finished, it will return to the AIR CAL menu screen.
Calibrating Using Auto Calibration
If CL EXPRD is set to NOT USE and calibration becomes due, then the standard 3
gases and the %volume combustible sensor must be calibrated using this menu
item and/or the next menu item, ONE CAL, because it will not be possible to
enter normal operation. The ppm combustible sensor must be calibrated using
PPM CAL
. See “Calibration/Bump Test Supplies and Equipment” on page 62 for
the items you will need to perform a calibration. These instructions assume you
are using a 3-gas cylinder and a 50% volume methane cylinder.
NOTE:
If the combustible gas channels are calibrated to a gas other than
methane, use an appropriate multigas cylinder or use single calibration
to calibrate the combustible channels.
1. Perform a fresh air adjust. See previous section for instructions.
2. Install the demand flow regulator onto the calibration cylinder.
3. Connect the sample tubing to the demand flow regulator.
4. Install the hose and probe to the Gas Tracer.
5. 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.
6. Use the AIR
▲
or (SHIFT)
▼
buttons to display 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.
AdJ
8
MAINTENANCE
sec
RELEASE
