Configuring The Calibration Solenoids With The Field Communicator - Fieldbus; Configuring The Calibration Solenoids With The Loi; Blowback Feature; Configuring Blowback With The Field Communicator - Hart - Emerson Rosemount OCX 8800 Reference Manual

Configuration and startup
4.
3.4.2 Configuring the calibration solenoids with the Field
Communicator - Fieldbus
Complete the following steps to configure the calibration solenoids with the Field
Communicator using the Foundation Fieldbus communication protocol.
1.
2.
3.
4.
3.4.3

Configuring the calibration solenoids with the LOI

Complete the following steps to configure the calibration solenoids with the LOI.
1.
2.
3.
3.5

Blowback feature

The blowback feature blows instrument air back through the center of the internal filter
and out the sample tube of the probe. This removes built-up dirt and particulate from the
internal filter sample line and any optional in-situ filter on the end of the sample tube. The
blowback feature is normally used in systems that have heavy particulate in the process
stream.
The blowback feature requires the optional blowback hardware to be properly installed
external to the transmitter. See
A transmitter shipped from the factory must be configured before blowback can be
implemented. The same process must be performed any time a replacement card stack is
installed.
3.5.1 Configuring blowback with the Field Communicator -
HART
Complete the following steps to configure blowback with the Field Communicator using
the HART communication protocol.
1.
2.
48
From the O2 CAL PARAMS/COe CAL PARAMS menu, select Solenoids. Select Yes to
enable the solenoids.
Use the 375 Field Communicator to access the Fieldbus menu.
From the TRANSDUCER block menu, select O2 CAL/COe CAL.
From the O2 CAL/COE CAL menu, select O2 CAL SETUP/COe CAL SETUP.
From the O2 CAL PARAM/COe CAL SETUP menu, select Solenoids. Select Present to
enable the solenoids.
Use the Z pattern to enter the LOI menu tree.
From the SYSTEM menu, select Calib Setup.
From the Calib Setup menu, select Use Solenoids. Select Yes to enable the solenoids.
Use the 375 Field Communicator or AMS software to access the HART menu.
From the DETAILED SETUP menu, select INPUT/OUTPUT.
Section for details.
OCX 8800