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Calculations
The following parameters P720 to P725 are values calculated by the unit,
dependent on application, and are “Read Only”, therefore have no default
values.
P720 Area
Displays the calculated value of the area when, P700 = 2 BS3690 flumes.
P721 Cv
Displays the calculated value for Cv when, P700 = 2 BS3680 flumes.
P722 Cd
Displays the calculated value for Cd when, P700 = 2 BS3680 flumes.
P723 Ce
Displays the calculated value for Ce when, P700 = 3 BS3680 weirs.
P724 Cu
Displays the calculated value for Cu when, P700 = 2 BS3680 flume and
P701 = 3 or 4 U-Throated flume.
P725 Kb
Displays the calculated value for Kb when, P700 = 3 BS3680 weirs and
P701 = 1 Rectangular weir.
Breakpoints
P730-P793 Breakpoints
Where the Primary Measuring device does not match any of the pre-
programmed devices contained in the FlowCERT LITE, then a universal
volume calculation can be performed. A head Vs flow chart is used, to enter
a number of Breakpoints for the head and flow (P730-793), which is either
provided by the manufacturer or created based on the dimensions of the
device.
Breakpoints should be entered in pairs of head and the corresponding flow
for that head. The first pair entered must be for zero head and flow and the
last pair entered must be for maximum head and flow. The higher number
of breakpoints (pairs) entered then the greater accuracy there will be. There
are a maximum number of 32 breakpoints (pairs) for head and flow that can
be entered.
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