Siemens sitrans tr300, Manual

Page: 53 / 96

Functions
9.14 Current sensor calibration (D/A trim)
SITRANS TR200/TR300
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Operating Instructions, 06/2010, A5E01071992-03
9.14.2 Application example: Current input calibration at 4 mA and 20 mA
NOTICE
The multimeter used must have a higher accuracy class than the transmitter.
Trim at 4 mA (offset correction)
1. Use the menu item D/A trim to assign 4 mA output to the transmitter.
2. Read the measured value at the ammeter.
3. Enter the measured current value using the operating software.
The transmitter uses this value for offset correction of the current.
Trim at 20 mA (gradient correction)
1. Use the menu item D/A trim to assign 20 mA output to the transmitter.
2. Read the measured value at the ammeter.
3. Enter the measured current value using the operating software.
The transmitter uses this value for gradient correction of the current.
The value for 4 mA is not affected by this.