VEGA FIBERTRAC 31 4 … 20 mA_HART - four-wire - Manual (Page 50)

50
6 Set up with the display and adjustment module
FIBERTRAC 31 • 4 … 20 mA/HART - four-wire
40446-EN-131119
The peak value function holds the max. and min. values during opera-
tion.
This parameter is described in the operating instructions manual
"Display and adjustment module".
Here, you can retrieve the adjustment value of the sensor. This is the
percentage value of the max. pulse rate at which the sensor switches
over.
If you have carried out a single point adjustment, this is the entered
value. With a two-point adjustment, this is the calculated value.
The value is an indication for the reliability and reproducibility of the
switching point.
The greater the difference in the pulse rate between covered and
uncovered status, the greater the differential value (Delta I) and the
more reliable the measurement. The automatically calculated damp-
ing is also oriented around the Delta I value. The higher the value, the
lower the damping.
A Delta I value below 10 % is an indication for a critical measurement.
In this menu item you can simulate measured values via the current
output. This allows the signal path to be tested, e.g. through down-
stream indicating instruments or the input card of the control system.
You can simulate different values:
Pulse rate of the sensor
Current output
Switching function of the relay
Diagnosis - Peak value
Diagnosis - Adjustment
data
Diagnosis/Simulation