Flowserve ValveSight Diagnostics Manual do Utilizador descarregar pdf (Página 34)

ValveSight Diagnostics for HART User Manual FCD VSENSF0001-02-AQ 03/15

The second calibration screen shows the detailed status of the calibration as it takes place.

Calibration Console

The “Calibration Console” box displays the Date Last Calibrated and Last Calibrated By ﬁelds. The Today’s Date ﬁeld is

automatically updated. Enter the user’s initials into the New Calibration By ﬁeld.

Supply Pressure

The “Supply Pressure” box must have the current supply pressure entered for an accurate calibration. The default for this

ﬁeld is the pressure used for the last calibration.

Calibration Flags

The “Calibration Flags” box indicates alarms that can become active if errors occur during the calibration. Supply Pres-

sure Low indicates a lack of supply pressure. Port 1 and Port 2 indicate errors with the pressure sensors.

Port Gages

The “Port Gages” box shows a graphical representation of Port 1 and Port 2 gages with the pressure based on the last

calibration, and ﬁelds with the A/D Count coming from the sensors in the positioner. The A/D Counts are shows strictly as

a diagnostic to indicate there is a signal coming from the sensors and also to estimate the stability of the pressures. If the

A/S counts read zero then the sensor has most likely failed and should be replaced.

Calibration Status

The “Calibration Status” box updates any progress of the current calibration. Depending on the latency of the communi-

cation 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.

8.2 Stroke

The Stroke calibration is a combined calibration that calibrates the travel of the valve position (zero and span). If auto

tuning is enabled the gain values for the positioner are also calculated.

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Flowserve ValveSight Diagnostics Manual do Utilizador Página 34