PULSAR MEASUREMENT
67
Ratiometric
If the flow calculation is to be
ratiometric P702 = 2
the flow will be
calculated using the formula: q= q
cal
(h+kh/h
cal
+kh)
2.5
Where:
q = flowrate
q
cal
=
flowrate at maximum head P705
h = head
kh = compensated head
Universal Calculations (P700=6)
Point of Measurement
The transducer must be above the
maximum head P704
by at least the
near
blanking distance P107
.
For all
Universal
calculation applications, the point at which the head is
measured should be chosen such that the surface of the liquid is not
affected by turbulence.
Calculations
Absolute
Universal Head Vs Flow -
If the flow calculation is to be absolute P702 = 1
the flow will be calculated using the formula: q = q(h)
Where:
q = flowrate
q(h) = flowrate for head
The desired number of Breakpoints, (P730 - P793) are to be entered in pairs
in values of head and corresponding flow. (Minimum of 2 pairs of
Breakpoints is required).
