Flowserve Logix MD+ ValveSight - Manual (Page 149)

ValveSight™ Diagnostics DTM Manual for Logix MD+ Positioner with HART®
FCD- LGENSF0014-00
© Flowserve Corporation
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View Pressure vs. Position
This graph shows the pressure parameters relative to the valve position. If a bi-directional
signature has been taken it shows the both sets of pressures. The pressures are not the
same in a bi-directional test due to the friction in the valve. The pressures are only shown
for positions from 5-95% this is to remove the effects of saturating the actuator at the ends
of travel. Any spikes or irregularities in the pressure can indicate problems at that point in
the vale travel where the irregularity occurs.
View Signals vs. Command
This graph shows the parameters relative to the command. If a bi-directional signature has
been taken it shows the both sets of signals relative to the command. This graph is useful