DATREND Systems vPad-A1, Operating Manual

Page: 76 / 108

vPad-A1 OPERATORS MANUAL
When an
Over Pressure
test is started, it attempts to pump air into the
pneumatic system until the relief valves are triggered. If the A1 senses a
valve trigger, it will immediately stop pumping and allow the
DUT
to vent
system pressure for the duration of the
Release Time
.
At the conclusion of the
Release Time
countdown, the
End Pressure
will be
recorded and the tester will vent all remaining pressure and report two
measurements:
•
Actual Pop Off Pressure
- exact pressure that caused valve trigger
•
End Pressure
- system pressure at the expiration of
Release Time
See
Figure 90
for a sample
Over Pressure
test report.
If the test does not sense a valve trigger before reaching
Target Pressure
,
then it will instead report the
Actual Pop Off Pressure
as “Not tripped”, and
the
End Pressure
will remain blank.
Figure 90
Manual Operation/Chapter 4
#
Page 62