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Instruction Manual
IM-106-880C, OI
September 2009
5-11
Hazardous Area OCX 8800
9. When the calibration status is at the Apply O2 Low Gas/ Apply Comb
Low Gas step, switch on O2 Low Gas/COe Low Gas. Verify the O2
concentration measured matches the O2 Low Gas parameter in the
setup. The unit samples reference air as the COe Low Gas. Press OK
when ready.
10. Select Next Calibration Step and press OK to start applying the test
gas. The time to apply the test gas is specified by the Gas Time.
11. The calibration step will change to Flow O2 Low Gas/ Flow Comb Low
Gas and then Read O2 Low Gas/ Read Comb Low Gas for a period of
time.
12. When ready, Calibration Step will stop at the Apply O2 High Gas/
Apply Comb High Gas. Switch off the O2 Low Gas/Sample Reference
Air and switch on the O2 High Gas/Comb Test Gas. Verify the O2/COe
concentration measured matches the O2 High Gas/COe Test Gas
parameter in the setup. Press OK when ready.
13. Select Next Calibration Step to start applying the test gas. The time to
apply the test gas is specified by the Gas Time.
14. The calibration step will change to Flow O2 High Gas/ Flow Comb
High Gas and then Read O2 High Gas/ Read Comb High Gas for a
period of time.
15. Skip over to Step 19, Stop Gas, if executing Calibrate O2 Sensor or
Calibrate Combustibles Sensor.
16. The calibration step will change to Read Comb Low Gas for a period of
time. When ready, Calibration Step will stop at Apply Comb High Gas.
Switch off the O2 High Gas and switch on the COe Test Gas. Verify the
COe concentration measured matches the COe Test Gas parameter in
the setup.
17. Select Next Calibration Step to start applying the test gas. The time to
apply the test gas is specified by the Gas Time.
18. The calibration step will change to Flow Comb High Gas and then
Read Comb High Gas for a period of time.
19. When ready, Calibration step will stop at Stop Gas. Switch off the O2
High Gas/COe Test Gas, Press OK when ready. Select Next Calibration
Step to start purging gas. The time to purge gas is specified by the
Purge Time.
20. When the Purge step is complete, the Calibration Step will be at Idle.
The Calibration Failed alarm will be set if the calibration has failed.
21. When calibration is complete. Select Exit to exit the calibration method.