Siemens sitrans tr200, Operating Instructions Manual

Page: 46 / 78

Functions
8.14 Current sensor calibration (digital-to-analog trim)
SITRANS TR200/TR300
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Operating Instructions, 04/2007, A5E01071992-01
Scaled trim for the digital-to-analog converter (only for SITRANS TR300 and SIMATIC PDM):
This transmitter offers the additional possibility of scaled trimming of the analog output.
Use the menu item scaled D/A trim (only for SITRANS TR300 and SIMATIC PDM) after
inputting the customer-specific scaling (for the above example: the lower scaled trim point =
1 V, the upper scaled trim point = 5 V) the value read off from the measurement device can
be input directly into the SIMATIC PDM.
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Figure 8-3 Current sensor calibration: Example 4 to 20 mA output
O Output characteristic
B Characteristic curve after lower sensor trim
C Characteristic curve after upper sensor trim