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Example 1 ‘V’ Notch Weir
In this example, it is required to calculate the flow through a Simple
Exponential Device, which on this occasion is a V-Notch Weir. Ratiometric
calculation will be used, to use the customers declared maximum flow, there
is no requirement for alarms and the flow rate is to be displayed in millions
of US gallons/day. The totaliser is to record the flow in thousands of US
gallons and is to be displayed, via the Resettable Totalisier on the auxiliary
display line, during RUN.
The distance from the end of the transducer horn (dB Mach 3) to zero flow
(P105) is 40 inches and max head (P704) is 15 inches, maximum
flow(P705) is known to be 2.2 million US gallons/day.
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