Emerson Rosemount OCX8800A Manual page 98

Calibration
December 2022
10. Switch off the O
11. Select START/NEXT CALSTEP to start applying the O
12. Switch off the O
13. When calibration is complete, select Exit Cal to exit the calibration method.
6.4.3 Calibrate COe manually using the Field
Communicator: HART
If necessary, refer to
Note
To select a menu item, either use Up and Down to scroll to the menu item and
press Right or use the number keypad to select the menu item number.
To return to a preceding menu, press Left.
Procedure
1. From the DIAG/SERVICE menu, select CALIBRATION.
2. From the CALIBRATION menu, select PERFORM CAL.
3. From the PERFORM CAL menu, select CAL METHODS.
4. From the CAL METHODS menu, select the type of calibration desired: COe
5. Remove the transmitter from any automatic control loops to avoid a
98
The Calibration Status should be automatically changed to FlowO2Low and
then ReadO2Low for a period of time. During this period, if you try to go to
the next calibration step by pressing OK and selecting START/NEXT
CALSTEP, you will be prompted with Operator step command is not
accepted at this time. The NEXT CALSTEP command is not accepted at this
time. When ready, Calibration Status will stop at the AppO2Hi.
low gas and switch on the O
2
concentration measured matches the O2 HIGH GAS parameter in the Setup
window. Press OK when ready.
The time to apply the test gas is specified by the Gas Time.
The Calibration Status should be automatically changed to FlowO2Hi and
then ReadO2Hi for a period of time. During this period, if you try to go the
next calibration step by pressing OK and selecting START/NEXT CALSTEP,
you will be prompted with Operator step command is not accepted at this
time. The NEXT CALSTEP command is not accepted at this time. When
ready, Calibration Status will stop at STOP GAS.
high gas. Press OK when ready. Select START/NEXT
2
CALSTEP to start purging gas.
The time to purge gas is specified by the Purge Time.
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.
Figure 5-3
Calibration.
In the first Calibration screen, a Loop should be removed from automatic
control warning appears.
potentially dangerous operating condition and press OK.
high gas. Verify the O
2
®
for the HART menu tree.
Manual
00809-0500-4880
2
high gas.
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