Technical Specifications

ValVue Digital Communications Software Ver. 2.80
636
GE Oil & Gas
 Manual- In this mode the valve does not respond to the input
signal Instead it remains stable in one position which is the
position that the valve was when manual mode was entered
or a new position is selected (see Setpoint) (indicator yellow).
 Setup- In this mode you can set calibration and configuration
parameters. Additionally you can run response time tests,
step response tests, and positioner signatures. (indicator
yellow).
Calibration
Value
This value is used when recalibrating the signal or pressure measurement.
1. Set the source current or pressure to a known value.
2. Enter that value in the Calibration Value edit box.
3. Select Set Low Signal Cal, Set High Signal Cal, Set Low Pressure Cal, or Set High
Pressure Cal appropriately.
Signal Calibration Procedure
The Calibrate tab allows you to recalibrate the signal sensor in the SVI. The sensor is calibrated
at the factory and does not usually require recalibration, but if needed, this dialog provides a
convenient method. The Reset to Factory button returns the calibrations to those that were set
before delivery of the SVI.
The currently measured value of the primary input is displayed and can be compared to
reference signals to see if recalibration is necessary. Calibrating the primary signal can be
done most easily with a variable current source.
The procedure for recalibration is:
Low Calibration
1. Click the Calib. Signal button. A dialog appears.
2. Enter 4 in the signal value field.
3. Set the current to 4.00 mA and click Set Low Signal.
High Calibration
1. Click the Calib. Signal button. A dialog appears.
2. Enter 20 in the signal value field.
3. Set the current to 20.00 mA and click Set High Signal.