ABB mFLO Series 시작 매뉴얼 - 페이지 5

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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.