FlowCERT (UL)
UL manual - Pulsar Process Measurement
UL manual - Pulsar Process Measurement
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Point of Measurement<br />
The transducer must be above the maximum head P704 by at least the near<br />
blanking distance P107.<br />
For Suppressed/Contracted Rectangular, Trapezoidal and V-notch,<br />
weirs, the head is measured upstream at a minimum distance of 3 times<br />
maximum head from the weir plate to ensure the surface of the liquid is not<br />
affected by turbulence or drawdown. (See DRWG. 1)<br />
In the case of a Venturi flume the point of measurement should be 150 mm<br />
upstream from the beginning of the converging section and for a Parshall<br />
flume 2/3 the length of the converging section upstream of the throat<br />
section. See DRWG 2 and 3)<br />
Page 38
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