84
Reference Manual
00809-0200-4840, Rev BA
Section 5: Service and Troubleshooting
December 2014
Section 5: Service and Troubleshooting
5.5.1
Process Value / Primary Variable (PV) (D900)
This indicates the live process value that drives the 4–20 mA Current Output. In HART
terminology, this parameter is the Primary Variable (PV).
The factory default is for the process value to be a level measurement in meters, feet, or inches.
It can be a volume or flow measurement if the transmitter has been configured to do those
calculations.
Note
Reported units for the HART Primary Variable is selectable (see
).
Field Communicator or AMS
To view the live PV:
1.
From the
Home
screen, select 1: Overview.
2.
Select 2: Primary Purpose Variables.
3.
Select 1: Primary Variable D900.
4.
When finished, press EXIT to exit to the previous menu.
Note
PV is available at other Fast Key sequences e.g. 3, 2, 1, 1
(see
Appendix D: Field Communicator
for a full menu map).
Rosemount 3490 Series Control Unit
To view the live PV:
1.
From the
Main Menu
screen, select MONITOR.
2.
Select the transmitter (e.g. “
Tx1: 3107
”).
3.
Select READINGS.
4.
Select VARIABLES.
5.
Select Xmtr PV.
6.
When finished, select “Quit” to exit to the previous menu.
Fast Keys
1, 2, 1
Primary Variable D900
36.540 ft
EXIT
HELP
(Field Communicator Screen)
Xmtr PV D900
9.3104ft
(Rosemount 3491 Screen)
Содержание 3107
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