Note
If you have already setup a common application, then there will be a number
shown other than 0, and you will see messages showing what the current
setup is. If you want to reset this and start again, press 0 (which will reset all
the quick setup parameters), otherwise pressing ENTER will allow you to
edit the parameters that have been set.
Choose Your Application
There are five categories of Primary Measuring Device, which are all
described in this chapter. They are exponential, BS3860 flumes, BS3860
weirs, special and universal.
Calculations for flow can be performed using absolute or ratiometric
calculations. The answer will be the same, the choice of calculation method
being limited to the amount of information available, with regards to the
primary measuring device.
For ratiometric calculation it is normally sufficient to know the maximum
flow at maximum head for the device in question. All types of primary
measuring devices can be set up with a choice of alarms.
If you want to set-up a basic exponential device, as described in the
following example 1, then choose 1. You then need to select the primary
measuring device for your application from the following available options:
suppressed rectangular weir, Cipolletti (trapezoidal) weir, Venturi
flume, Parshall flume, Leopold Lagco flume, V notch weir or other, for
any other type of exponential device.
To set-up an application for a BS3680 flume, as described in the following
example 2, then choose 2. You then need to select the primary measuring
device for your application from the following available options:
rectangular flume with or without hump, U-throated flume with or
without hump.
To set-up an application for a BS3680 weir, as described in the following
example 3, then choose 3. You then need to select the primary measuring
device for your application from the following available options:
rectangular weir, V notch 90 degree, V notch 53 degree 8 minutes or a V
notch 28 degree 4 minutes.
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