ULTRA 4 INSTRUCTION MANUAL
154
Breakpoints
P730 – P793 Breakpoints
Where the Primary Measuring device does not match any of the pre-
programmed devices contained in the Ultra 4, then a universal volume
calculation can be performed. A head Vs flow chart is used, to enter several
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.
Tables
P796 Reset Breakpoints
This parameter allows the resetting, to the default value, of all previously set
breakpoints (P730-793), without having to access them individually. When it
is necessary to reset or amend breakpoints this can be achieved by directly
accessing the desired parameter (P730-793) and changing as required.
P797 Number of Breakpoints Set
This parameter allows you to review the number of breakpoints that have
been set, without the need to access each individual one in turn, this is a
“Read Only “parameter and no values can be entered.
Average Flow
P863 Average Flow
This parameter will display the Average Flow for the time period set in
Average Time (P864). It is read only and cannot be changed.
P864 Average Time
This parameter will set the time period over which the Average Flow (P863)
is to be calculated before being displayed.
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