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Sensor trim at the upper trim point
1. Apply the pressure for the upper sensor trim at the device.
The upper trim point needs to be greater than the lower trim point.
2. Use the "Apply values" menu to enter the pressure value that you have created and assign
the pressure value to the device.
The device calibrates to your value.
The slope of the characteristic curve is corrected.
The lower sensor trim point is not affected by this.
Result
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A
Original characteristic
B
Characteristic curve after lower sensor trim
C
Characteristic curve after upper sensor trim
See also
Apply lower range value [08]/Apply upper range value [09] (Page 118)
9.3.7
Diagnostics functions
9.3.7.1
Limit monitoring and event counter
Used to monitor selected process values, count associated events based on configured limits
and triggers, acknowledge and reset alarms and warnings.
Parameter assignment
9.3 Parameter assignment over remote operation
SITRANS P320/P420 (mA/HART)
Operating Instructions, 06/2018, A5E44852162-AA
149