Badger Meter SRD/SRI Valve Positioners - Manual (Page 63)

Analog – Input Current Calibration
If the positioner is being used in the analog mode, then calibration by the Analog Setpoint feature is available in the Calibrate
menu . Analog Setpoint is also available manually from the local push buttons of the positioner .
This function calibrates lower and upper limits of the input current (4 mA and 20 mA) . A calibrated current source is needed .
Analog – Zero Calibration
This function performs calibration of the Lower Input Current . It defines the 4 mA value to the positioner .
To perform this procedure, proceed as follows:
1 . Take positioner off the process loop and connect a current source .
2 . Set input current to 4 mA .
3 . Acknowledge by entering this value (4 mA) in the edit box .
4 . Set input current to 20 mA .
5 . Acknowledge by entering this value (20 mA) in the edit box .
The system will respond with the "Analog Setpoint Calibration finished" message .
Analog – Span Calibration
This function performs calibration of the Upper Input Current . It defines the 20 mA value to the positioner . To perform this
procedure proceed as follows:
To perform this procedure, proceed as follows:
1 . Take positioner off the process loop and connect a current source .
2 . Set input current to 4 mA .
3 . Acknowledge by entering this value (4 mA) in the edit box .
4 . Set input current to 20 mA .
5 . Acknowledge by entering this value (20 mA) in the edit box .
The system will respond with the "Analog Setpoint Calibration finished" message .
Calibration Menu
Page 63 August 2014 POS-UM-00011-EN-02