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17. If calibration is needed, calibrate static pressure first, then differential
pressure, using a deadweight tester or acceptable standard. Insure
that both orifice taps are closed and bypass valves are open during
AP calibration to avoid a false DP. Make sure there are no leaks in
the manifold or test equipment.
18. Perform as left calibration checks as needed.
19. Place Flow Computer on line: To avoid inducing toggle and/or a
calibration shift, close vent valve, open both bypass valves, then
open orifice tap valves SLOWLY (high pressure side first). Once both
orifice tap valves are fully opened, the bypass valves can be closed.
20. Verify that the unit is calculating volume correctly. Watch the display
or look at the Current Values in the Entry Mode of PCCU32.
21. Collect data and review the event and characteristic files to insure all
parameters are set properly.
22. Optional: When you are reasonably sure that all setup and
calibration is complete and the unit is on line calculating volume, it is
recommended that a Reset Volume command be sent from the
PCCU32 Entry Mode. This allows the unit to have what might be
considered as an official starting point for good live data. The Reset
Volume will be recorded in the Events file to mark the date and time.
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