Flowserve ValveSight Diagnostics - Manual (Page 35)

ValveSight Diagnostics for HART User Manual FCD VSENSF0001-02-AQ 03/15
35 flowserve.com
Stroke Calibration Console
The “Stroke Calibration Console” box has fields for the Date Last Calibrated and Last Calibrated By. The Today’s Date field
is updated automatically. Enter the initials of the user in the New Calibration By field.
Stroke Calibration Flags
The “Stroke Calibration Flags” box indicates alarms that can become active if errors occur during calibration. 0% Position
Out of Range and 100% Out of Range errors indicate that the feedback arm has moved too far in one direction. Feedback
Range Small indicates the feedback arm should be shortened. ILO Unstable indicates trouble with the inner loop system. No
Motion Timeout indicates little or no feedback movement was detected. Non-settle Timeout indicates unstable feedback.
Estimated Position
The “Estimated Position” box shows the current position of the valve. This may not be accurate if there is a lot of latency
in the communication with the positioner.
Stroke Calibration State
The “Stroke Calibration State” box shows the Calibration State and the Calibration Progress. Depending on the latency of
the communication connection to the positioner not all steps may be shown during a calibration.
Data Management
The Start Calibration button initiates the calibration process and the Abort button ends the calibration in process and
resumes normal operation. Always allow the calibration to finish before navigating away from the Calibration screen.
Otherwise, use the
Abort button before navigating away.
8.3 Analog Output
The Analog Output Calibration is available for positioners that have been supplied with the analog output module. This
calibration is required if the 4-20 mA signal from the positioner needs to be spanned to something other than 4-20 mA.
This option is also used to reverse the output if needed. The analog output is updated to match the stroke calibration of the
positioner automatically every time a stroke calibration is done.
The analog output calibration must have an external power supply and current meter connected to complete the calibration.