Siemens sitrans tr200, Operating Instructions Manual

Page: 41 / 78

Functions
8.9 Calculation of differential value/mean value
SITRANS TR200/TR300
Operating Instructions, 04/2007, A5E01071992-01
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8.9 Calculation of differential value/mean value
The differential value and mean value connection interfaces have the following special
features compared to the standard interface:
Setting start of scale value and end of scale value:
●
Firstly enter the start of scale value and end of scale value for both individual sensors.
The start of scale value and end of scale value are thus the same for both sensors. You
cannot parameterize different measuring ranges for individual sensors. Tip: Use the
largest measuring range.
● Then assign the parameters for the start of scale value and end of scale value for the
differential value and mean value measurement.
Sensor calibration:
●
Trim the sensor to the respective measuring range limits for the two individual sensors.
The differential value and mean value set in the parameters cannot be trimmed.
8.10 Electrical damping
You can set the filter time constant of electrical damping to a point within a range from 0 to
30 s.
8.11 Current transmitter function (only for SITRANS TR300)
You can use this function to switch the transmitter into constant current mode for test
purposes. In that case, the output current no longer corresponds to the process variable.