Emerson Rosemount OCX 8800 - Performing a Calibration Verify with the Field Communicator - Fieldbus; Performing a Calibration Verify with the LOI

3.6.2 Performing a calibration verify with the Field
Communicator - Fieldbus
Complete the following steps to perform a calibration verify with the Field Communicator
using the Foundation Fieldbus communication protocol.
1. Use the 375 Communicator or AMS software to access the Fieldbus menu.
2. From the TRANSDUCER block menu, select METHODS.
3. Set the Mode to OOS (out of service) before starting the calibration verify process.
4. From the METHODS menu, select OCX Cal Verify. From this menu, select the functions
as follows:
• Flow High O2 Gas: Flows the high O
2
test gas for the time specified in the
calibration setup.
• Flow Low O2 Gas: Flows the low O
2
test gas for the time specified in the
calibration setup.
• Flow High COe Gas: Flows the COe test gas for the time specified in the
calibration setup.
• Purge gas: Intiates a delay for the specified purge time before oxygen/
combustibles readings are considered valid.
Note
A purge automatically follows a gas flow.
3.6.3
Performing a calibration verify with the LOI
Complete the following steps to perform a calibration verify with the LOI.
1. Use the Z pattern to enter the LOI menu tree.
2. From the CALIBRATION menu, select Cal Verify.
3. From the Cal Verify menu, select the functions as follows:
• Flow High Gas: Flows the high O
2
test gas for the time specified in the calibration
setup.
• Flow Low Gas: Flows the low O
2
test gas for the time specified in the calibration
setup.
• Flow COe Gas: Flows the COe gas for the time specified in the calibration setup.
• Purge: Intitiates a delay for the specified purge time before oxygen/combustibles
readings are considered valid.
Note
A purge automatically follows a gas flow.
Configuration and startup
Reference Manual 51