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81
Reference Manual
00809-0100-4140, Rev AA
January 2017
Sensor Frequency is mapped to the HART dynamic variable SV (Secondary Variable). It is
indicated on the LOI (see
“Local Operator Interface (LOI) display” on page 29
To view the fork frequency (Field Communicator)
1.
From the Home screen, select
3: Service Tools
.
2.
Select
4: Maintenance
>
1: Diagnostics
>
1: Sensor
.
3.
Select
1: Sensor Frequency
.
Note
Fast Key sequence 3, 2, 3, 3 also indicates the compensated fork frequency.
The uncompensated fork frequency, i.e. before sensor compensation is applied,
is available at fast key sequence 3, 4, 1, 1, 3.
To view the fork frequency (AMS Device Manager)
1.
Right click on the device and select
Service Tools
.
2.
Select
Maintenance
, and then select the
Diagnostics
tab.
3.
Sensor Frequency
is displayed in the Sensor
box.
To view the fork frequency (LOI)
See
“Local Operator Interface (LOI) display” on page 29
.
5.5.4
Sensor compensation
The frequency of the vibrating fork sensor may be affected by a process temperature being
different to the calibrated temperature. Entering a known process temperature can
compensate accordingly and provide an improved frequency switching point (
).
To change the compensation (Field Communicator)
1.
From the Home screen, select
3: Service Tools
.
2.
Select
4: Maintenance
>
3: Calibrate Sensor
>
3: Sensor Compensation
.
3.
Select
3: Process Temperature.
4.
Enter the known process temperature.
Fast Keys
3, 4, 3, 3, 3
Содержание Rosemount 2140
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