Gas Tracer Operator’s Manual, CSA Version Preparing for Calibration or Bump Testing •
To calibrate or bump test the Gas Tracer, you will need:
• Known calibrating samples of the gases being detected. The combustible and
toxic gas samples should have concentrations in approximately the middle of
the range of detection. An oxygen-free source, such as 100% nitrogen is
recommended for setting the oxygen zero when using single calibration.
WARNING:
When using auto calibration, the multi-gas cylinder must have an
oxygen concentration in the range of 10% - 18% oxygen.
• A gas collection bag with hose clamp
• A 0.5 LPM fixed-flow regulator or dispensing valve
• Non-absorbent tubing
• 6 inch humidifier tube (for ppm calibration)
To calibrate the %LEL, Oxygen, and CO sensors at the same time, automatically,
with no need for a zero-oxygen source, you can use the auto calibration feature
with a 3-gas cylinder. This appendix includes instructions for auto calibration
with a fixed flow regulator or dispensing valve, a 3-gas cylinder, and a %volume
methane cylinder. This document also includes instructions for calibrating one
channel at a time using single calibration.
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 Testing
Perform the following tasks prior to performing a calibration or a bump test.
Normal Operation Fresh Air Adjustment
Whether you will perform an auto calibration, a single calibration, or a bump test
on the Gas Tracer, you will need to set the fresh air readings first before setting the
span readings for each gas.
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 adjustment by pressing and holding the
AIR
▲
button. The display prompts you to hold the AIR
▲
button.
AIr
CAL
MAINTENANCE
HOLD AIR
