Commissioning
56 FLOWSIC600 · Operating Instructions · 8010458 V2.0 · © SICK MAIHAK GmbH
4.6.3 Function test with MEPAFLOW600 CBM
Performance Check
b
Once the facility is flowing at the initial flow rate, go to the “Meter values“ page to check
the performance of the meter. The performance value should be at least 75% on all
paths. If the velocity of gas is greater than 30 m/s (100 ft/s), the performance values
may be significantly lower.
b
Check the Main system bar for system alarms (symbol “System” should be green) and
warnings (symbol “User” should be green) (
→
Figure 22). If there is a yellow or a red
symbol, proceed as described on
→
pg.72, 6.1.
Zero Phase Check
b
Use the “Path Diagnosis” wizard (
→
Figure 24) to check the “Zero Phase” parameters of
both transducers on each path (path 1, 2, 3, 4).
Properly adjusted zero phases of the individual paths are the basis for accurate transit
time measurement of the ultrasonic signals. The “Zero Phase” parameter of a path is
properly adjusted, when the green cursor in the signal window is symmetrically within the
two dotted red limit lines and the red asterisk is positioned exactly on the second positive
zero crossing of the received ultrasonic signal.
Figure 22 “Path Diagnosis” wizard in MEPAFLOW600 CBM
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