Yokogawa YVP20S - Manual (Page 132)

14-6
<Toc> <Ind> <14. DIAGNOSTIC SERVICES>
IM 21B04C50-01E
14.3.1 Actuator Signature
Actuator signature will measure and save the data of static characteristic of the control
valve.
• Measurement Parameters
The input parameter is output pressure (Equal to MEAS_PRESS_AIR); and the output
parameter is the feedback signal ( Equal to FINAL_POSITION_VALUE.Value)
In measuring the signature, YVP will obtain 18 data set. (Pressure data and Position data is
one set.) The measuring point is the round trip of 10, 20, 30, 40, 50, 60, 70, 80, and 90% of
span.
Figure 14.6 Actuator Signature Graph