Pulsar FlowCERT LITE, Instruction Manual

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Page
51
Example 3 BS3680 Rectangular Weir
In this example it is required to calculate to the flow through a BS3680
Rectangular weir. Absolute calculation will be used, and there is a
requirement for an alarm to indicate a high flow condition to be set to Relay
3. The flow rate is required to be displayed in
US gallons/minute and the
totaliser is to record the flow in thousands of US gallons , the resettable
totaliser is to be displayed during RUN. The transducer to be used is a dB3.
The distance from the face of the transducer to zero flow ( P105 ) is 40
inches and max head ( P704 ) is 16 inches, maximum flow ( P705 ) will be
calculated by the FlowCERT
LITE
as 2385.63 USG/min.
Approach width (
Dim”A”
) P710 = 18 inches
Crest width (
Dim “B”
) P711 = 12 inches
Crest Height (
Dim “C”
) P712 = 10 inches