RKI Instruments Gas Tracer - Manual (Page 131)

Gas Tracer Operator’s Manual Using Maintenance Mode • 123
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.
7. Use the AIR▲ or (SHIFT)▼ buttons to alternate between the 3-gas
AdJ
8
MAINTENANCE
sec
RELEASE