Badger Meter SRD/SRI Valve Positioners - Manual (Page 62)

CALIBRATION MENU
The Calibrate page is actually a menu of possible calibration operations that you can perform . Most of these require special
tools or equipment . Since many of these operations will move the valve, they should only be used when it is safe to do so .
The following calibration functions are only available in the workshop security level:
• Analog
• Angle
• Temperature
• Output
• Air Supply Pressure
• Output Pressure
NOTE: N The SRD991 has to be in Online or Offline Mode to do any calibration function . If you call a calibration function
when the SRD991 is in Local Mode by using the local keys, the SRD991 will return an error and the calibration
function will be cancelled .
Angle Calibration
Angle calibration (Calibrate menu) is needed whenever the "Printed Circuit Board" or the potentiometer is replaced . This
operation is typically done on the bench and may require removal of positioner from the valve as well as special tools . Refer to
the positioner users manual for more information .
Angle – Zero Calibration
1 . Rotate the feedback lever to the lower angle value (typically 45 degree down from horizontal .
2 . Enter the lower angle value in the edit box .
3 . Rotate the feedback lever to the upper angle value (typically 45 degree up from horizontal) .
4 . Enter the upper angle value in the edit box .
The system informs you that the angle calibration finished .
Angle – Span Calibration
1 . Rotate the feedback lever to the lower span value (typically 45 degree down from horizontal .
2 . Enter the lower span value in the edit box .
3 . Rotate the feedback lever to the upper span value (typically 45 degree up from horizontal) .
4 . Enter the upper span value in the edit box .
The system informs you that the span calibration finished .
Calibration Menu
Page 62 August 2014 POS-UM-00011-EN-02