FlowCERT (UL)
UL manual - Pulsar Process Measurement
UL manual - Pulsar Process Measurement
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RATIOMETRIC<br />
V-Notch Angle Weir (Non BS 3680)<br />
If the flow calculation is to be ratiometric P702 = 2 the flow will be<br />
calculated using the formula: q= q cal (h+kh/h cal +kh) 2.5<br />
Where: q = flowrate<br />
q cal = flowrate at maximum head P705<br />
h = head<br />
kh = compensated head<br />
Universal Calculations<br />
Point of Measurement<br />
The transducer must be above the maximum head P704 by at least the near<br />
blanking distance P107.<br />
For all Universal calculation applications the point at which the head is<br />
measured should be chosen such that the surface of the liquid is not affected<br />
by turbulence.<br />
Calculations<br />
ABSOLUTE<br />
Universal Head Vs Flow<br />
If the flow calculation is to be absolute P702 = 1 the flow will be calculated<br />
using the formula: q = q(h)<br />
Where: q = flowrate<br />
q(h) = flowrate for head<br />
The desired number of Breakpoints, (P730 - P793) are to be entered in<br />
pairs in values of head and corresponding flow. (Minimum of 2 pairs of<br />
Breakpoints is required).<br />
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