Table of Contents
Advertisement
Manual
00809-0500-4880
The COe zero feature is only valid if the transmitter is supplied with calibration
solenoids and the solenoids have been activated.
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:
Rosemount OCX8800A
®
•
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.
Configuration and start-up
December 2022
.
2
65
Advertisement
Table of Contents
