Azbil MagneW Plus+ NNK140/941, User Manual

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NNK-MagneW 3000 FLEX/PLUS Smart Electromagnetic Flowmeter Open channel Type Detector Appendix-
1
Appendix
Water level calculation (Bell mouth type)
Weir
H
1
H
2
Mounting
Gate
Example:
Size and number of detector : 200mm, 1unit
Size and number of dummy detector : 200mm, 1unit
Width of weir plate (W) : 2m
Maximum flow rate (Qt.) : 500m
3
/h
Average flow velocity per detector (V) : 2.21m/s
Conversion of water head differential (H
1
) to water level
in which : Water head differential conversion coefficient 0.053
(Example)
When the average flow velocity of the detector is 2.21[m/s]
Conversion of overflow water depth (H
2
O) to water level
(Example)
When the maximum flow rate is 500[m
3
/h] and the sheathing board width is 2[m]