Emerson Rosemount OCX8800A - Page 103

ready, Calibration Step will stop at the Apply O
2
High Gas/ Apply Comb High
Gas.
11. Switch off the O
2
low gas/sample reference air and switch on the O
2
high
gas/combustibles test gas. Verify the O
2
/COe concentration measured
matches the O
2
High Gas/COe Test Gas parameter in the setup. Press OK
when ready.
12. Select Next Calibration Step to start applying the test gas.
The time to apply the test gas is specified by the Gas Time.
The calibration step will change to Flow O
2
High Gas/ Flow Comb High Gas
and then Read O
2
High Gas/ Read Comb High Gas for a period of time.
13. Skip over to Step 16 if executing Calibrate O
2
Sensor or Calibrate
Combustibles Sensor.
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.
14. Switch off the O
2
high gas and switch on the COe test gas. Verify the COe
concentration measured matches the COe Test Gas parameter in the setup.
15. Select Next Calibration Step to start applying the test gas.
The time to apply the test gas is specified by the Gas Time.
The calibration step will change to Flow Comb High Gas and then Read
Comb High Gas for a period of time. When ready, Calibration Step will stop
at Stop Gas.
16. Switch off the O
2
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.
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.
17. When calibration is complete, select Exit to exit the calibration method.
Manual Calibration
00809-0500-4880 December 2022
Rosemount OCX8800A 103