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184 • Calibrating the Gas Tracer
Gas Tracer Operator’s Manual, CSA Version
5. Press and release the POWER ENTER button. The single calibration screen
displays for the sensor you selected. The gas reading flashes.
6. Connect the tubing from the filled gas bag to the rigid tube on the probe.
Allow the calibration gas to flow for one minute.
7. If necessary, use the AIR
▲
and (SHIFT)
▼
buttons to adjust the reading to
match the concentration listed on the calibration cylinder.
If the reading already matches the concentration listed on the calibration
cylinder, press and release the AIR
▲
button then press and release the
(SHIFT)
▼
button so that the instrument sees a change and resets the
calibration date.
8. Press and release the POWER ENTER button to save the span value. The LCD
will indicate that the calibration has ended, then the single calibration menu
displays.
9. Disconnect the tubing from the probe.
10. Repeat steps 4 through 9 for any other sensors you want to calibrate. Make
sure you use an appropriate calibration cylinder for each sensor.
CAUTION:
When calibrating the oxygen channel, verify the concentration of oxygen
listed on the cylinder’s label. For oxygen-free samples (100% nitrogen for
example), set the oxygen zero setting to 0.0%.
11. After the last channel is calibrated, disconnect the calibration tubing from the
probe.
12. Use the AIR
▲
and (SHIFT)
▼
buttons to scroll to ESCAPE in the ONE CAL
menu.
13. Press and release the POWER ENTER button to exit ONE CAL.
14. With the ONE CAL menu option displayed, press the (SHIFT)
▼
button until
the NORMAL
menu option is displayed.
15. Press and release the POWER ENTER button to return to Measuring Mode.
0
%LEL
MAINTENANCE
CH
4
ONE CAL
- - -
%LEL
MAINTENANCE
CH
4
ONE CAL