ULTRA 4 INSTRUCTION MANUAL
100
Special Devices
Point of Measurement
The transducer must be above the maximum head P704 by at least the
near blanking distance P107.
In the case of a Palmer Bowlus flume the point of head measurement
should be half the value of Dim “A” P710 upstream of the device.
For a H-Flume the head measurement is taken at a point downstream from
the flume entrance as detailed in the table below: