82
Reference Manual
00809-0100-4140, Rev AA
January 2017
To change the compensation (AMS Device Manager)
1.
Right click on the device and select
Service Tools
.
2.
Select
Maintenance
, and then select the
Calibrate Sensor
tab.
3.
Process Temperature
is displayed in the Sensor Calibration box.
4.
Enter the known process temperature, and select
Send
.
To change the compensation (LOI)
This function is not available on the Local Operator Interface.
5.5.5
Sensor state
Sensor State
indicates the present state of the vibrating fork sensor.
As the vibrating fork sensor becomes immersed in a process liquid, the vibration frequency
decreases and the sensor state changes to a ‘
wet state’
at a switching point.
When a process liquid falls away from the fork, the vibration frequency increases and the
sensor state changes to a ‘
dry state’ at a switching point
.
If the fork sensor becomes damaged or develops a fault, the vibrating frequency moves
outside normal operating limits and the sensor state changes to ‘too dry’, ‘too wet’, or
‘zero’. (See
“Dry fork frequency and switching points” on page 85
for band limits).
To view the sensor state (Field Communicator)
1.
From the Home screen, select
3: Service Tools
.
2.
Select
4: Maintenance
>
1: Diagnostics
>
1: Sensor
.
3.
Select
4: Sensor State
.
To view the sensor state (AMS Device Manager)
1.
Right click on the device and select
Overview
.
2.
Sensor State
is indicated in the Primary Process Variables
box.
To view the sensor state (LOI)
See
“Local Operator Interface (LOI) display” on page 29
for how to configure the LOI to
display this device variable.
Fast Keys
3, 4, 1, 1, 4
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