Emerson ROSEMOUNT OCX 8800 - Manual (Page 58)

Instruction Manual
IM-106-880, Rev 1.0
January 2007
OCX 8800
5-4
5. From the SELECT ACTION screen, select START/NEXT CALSTEP to
continue calibration, select ABORT CAL to abort calibration or EXIT
CAL to exit calibration. Select one item from the list and press ENTER.
OCX: TAG NAME
SELECT ACTION
1. START/NEXT CALSTEP
2. ABORT CAL
3. EXIT CAL
6. When the Calibration Status is at the AppO2Low step, switch on O
2
Low Gas. Verify the O
2
concentration measured matches the O2 LOW
GAS parameter in the Setup. Press OK when ready.
7. Select Start/Next Cal Step to start applying the O
2
Low Gas. The time
to apply the test gas is specified by the Gas Time.
8. The Calibration Status should be automatically changed to FlowO2Low
and then ReadO2Low for a period of time. During this period, if an
attempt is made to go to the next calibration step by pressing OK and
selecting Start/Next Cal Step, you will be prompted with Operator step
command is not accepted at this time. The Next Cal Step command
is not accepted at this time.
9. When ready, Calibration Status will stop at the AppO2Hi. Switch off the
O
2
Low Gas and switch on the O
2
High Gas. Verify the O
2
concentration
measured matches the O2 HIGH GAS parameter in the Setup. Press
OK when ready.
10. Select Start/Next Cal Step to start applying the O
2
High Gas. The time
to apply the test gas is specified by the Gas Time.
11. The Calibration Status should be automatically changed to FlowO2Hi
and then ReadO2Hi for a period of time. During this period, if an attempt
is made to go the next calibration step by pressing OK and selecting
Start/Next Cal Step, you will be prompted with Operator step
command is not accepted at this time. The Next Cal Step command
is not accepted at this time.
12. When ready, Calibration Status will stop at STOP GAS. Switch off the
O
2
High Gas. Press OK when ready. Select Start/Next Cal Step to start
purging gas. The time to purge gas is specified by the Purge Time.
13. When the Purge step is complete, the Calibration Status will be at IDLE
if the calibration is successful or CAL RECOMMENDED if the
calibration has failed. A Calibration Failed alarm will be set if the
calibration has failed.
14. When calibration is complete. Select Exit Cal to exit the calibration
method.