92 FLOWSIC600-XT · Operating Instructions · 8018846/1BHP/V2-1/2021-05 · © SICK Engineering GmbH
Commissioning and Operation
Subject to change without notice
4.4.2 Checking the signal acceptance rate
▸
When the equipment is in operation and a flow rate is available, open the tile “Meter
values” in menu “Diagnostics” in the FLOWgate™ operating software.
▸
Check the signal acceptance rate (Sign. Acceptance Rate). The signal acceptance rate
should be at least 75% on all paths. The signal acceptance rate may be significantly
lower when the velocity of gas is above 30 m/s (100 ft/s).
4.4.3 Zero phase check
▸
Open the tile “Signal View” tile in the “Diagnostics” menu.
▸
Check the parameter “Phase shift” for each path (1-1, 1-2, 1-3, 1-4 and 2-1, 2-2, 2-3, 2-
4).
Properly adjusted zero phases of the individual paths are the basis for accurate measure-
ment of the ultrasonic signals‘ transit time. The “Phase shift” parameter of a path is
properly adjusted when the values are lower than 0.2. An adjustment coordinated with
SICK Service is recommended when the zero phases do not meet the specified criteria.
Fig. 44 Zero phase check
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