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Gas Tracer Operator’s Manual, CSA Version
Calibration Mode • 63
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.
Preparing for Calibration or Bump Test
Whether you will calibrate the Gas Tracer using auto calibration or single
calibration or perform a bump test, you will need to set the fresh air readings first.
1. Find a fresh-air environment. This is an environment free of toxic or
combustible gases and of normal oxygen content (20.9%).
2. Turn on the unit as described in “Turning On the Gas Tracer, Normal Mode
Only” on page 25 or “Turning On the Gas Tracer in Normal Mode With All
Modes Active” on page 30. Use the sample hose and probe.
3. With the unit on, perform a fresh air adjust by pressing and holding the AIR
▲
button. The display prompts you to hold the AIR
▲
button.
4. Continue to hold the AIR
▲
button until the display prompts you to release it.
The Gas Tracer will set the fresh air reading for all channels as it counts down
from 8. If the combustible channel is set as %LEL only or vol% only, there is no
countdown period. The fresh air reading is set immediately.
5. Install the demand flow regulator onto the calibration cylinder.
6. Connect the sample tubing to the demand flow regulator.
AIr
CAL
MAINTENANCE
HOLD AIR