5 Selection of the Measuring Point FLUXUS F70x
UMFLUXUS_F7V4-6-2EN, 2017-10-01 27
5.4 Selection of the Sound Beam Plane Near an Elbow
On vertical pipes On horizontal pipes
• The sound beam plane (see section 3.3.1) has an an-
gle of 90° to the elbow plane. The elbow is upstream of
the measuring point.
• The sound beam plane (see section 3.3.1) has an an-
gle of 90° ±45° to the elbow plane. The elbow is up-
stream of the measuring point.
With measurements in both directions With measurements in the reflection
arrangement with 2 beams and 2 planes
• The sound beam plane (see section 3.3.1) is selected
according to the nearest elbow (horizontal or vertical,
depending on the pipe orientation - see above).
• The 2 sound beam planes (see section 3.3.1) have an
angle of 45° to the elbow plane. The elbow is upstream
of the measuring point.
• With horizontal pipes, the transducers are mounted on
the upper half of the pipe.
elbow plane
flow direction
elbow plane
flow direction
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