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Manual
00809-0500-4881
A Rosemount OCX8800 shipped from the factory must be configured before the COe
zero feature can be implemented. This same process must be performed any time a
replacement card stack is installed.
WARNING
During the COe Zero Function, the analog output signals may track the oxygen and
combustibles readings if configured to do so.
To avoid a potentially dangerous operating condition, remove the transmitter from the
automatic combustion control loop before performing the COe Zero Function procedure.
Note
At the completion of the COe Zero Function, the COe analog output signal will change if the
Zero Update parameter is set to Yes.
3.9.1
Configure COe zero with the Field Communicator - HART
Procedure
1. Use the Field Communicator or AMS software to access the HART menu.
2. From the DETAILED SETUP menu, select INPUT/OUTPUT.
3. From the INPUT/OUTPUT menu, select COE ZERO.
4. From the COE ZERO menu, select the functions as follows:
3.9.2
Configure COe zero with the Field Communicator -
F
OUNDATION
Procedure
1. Use the Field Communicator or AMS software to access the Fieldbus menu.
2. From the TRANSDUCER block menu, select COe ZERO.
3. From the COe ZERO menu, select the functions as follows:
Rosemount OCX8800C
•
Zero Enabled: Select Yes or No to enable or disable this feature.
•
Zero Intrvl: Length of time between COe zero events. Range is 60 to 480 minutes.
Default is 60 minutes.
•
Zero Flow: Length of time COe zero gas flows. Range is 120 to 600 seconds.
Default is 120 seconds.
•
Zero Purge: Length of time after COe zero is complete before oxygen/
combustibles readings are considered valid. Range is 60 to 180 seconds. Default
is 60 seconds. Total duration of this function is flow time plus purge time.
•
Zero Tracks: Determines if the analog output signals track or hold during the
function. Valid choices are None, Both, COe, and O
•
Zero Update: Determines if the COe calibration constant is updated at the end
of the function. Valid choices are Yes and No. A Yes choice will cause the COe
calibration constant to update.
Note
At the completion of the COe Zero Function, the COe analog output signal will
change if the Zero Update parameter is set to Yes.
Fieldbus
™
Configuration and start-up
April 2023
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