ITABAR-Sensor Type
IBFD
Operating
Manual
4.5.
Required Undisturbed Pipe Run Lengths
(in multiples of D)
NOTE:
The accuracy of the measurements of the ITABAR
sensor depends on the development of a stream
profile which should be as undisturbed as possible.
Therefore the selection of the installation location
within the pipe run is of considerable importance.
If the recommended straight pipe run lengths are not
available, the measuring accuracy can be adjusted to
the specific conditions of the measuring stretch by
conducting a comparison measurement.
The measurement guarantees that the differential
pressure corresponds to the true flow velocity,
thereby assuring the specified accuracy.
The following tried and true hints regarding the
required pipe lengths ahead of and behind the sensor
are designed to help you in your selection of the
most advantageous installation location.
Details can be requested from the manufacturer.
As a general rule, regulating valves, throttle valves,
and gate-type valves should be installed behind the
sensor.
D = P i p e D i a m e t e r
A = U p s t r e a m B = D o w n s t r e a m
7
3
9
3
17
4
18
4
R e s t r i c t i o n i n t h e P i p e R u n
7
3
W i d e n i n g o f t h e p i p e R u n
7
3
R e g u l a t i n g D e v i c e
24
4
6
