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MiniRanger Plus – INSTRUCTION MANUAL
7ML19981CJ02
Applications with Standpipes
In many liquid applications, access to the vessel must be made via a standpipe. In such
cases, Siemens Milltronics can provide optional flanged transducers, or split flanges that
mate to a flanged standpipe. Another option is to hang the transducer from a blind flange.
The standpipe length should be as short and the diameter as large as possible. As a rule
of thumb, the - 3 dB cone of the sound beam should not intersect the standpipe wall in
applications opening into a vessel. Otherwise, additional near blanking (P800) is required
to compensate for the interference zone created by the opening.
transducer face
no additional blanking required
vessel
no
intersection
vessel
near blaning extension of 150mm (6") past
end of standpipe may be required
reflection at
interference
zone created
by opening
sound beam
intersects
pipewall
transducer
no vessl
no additional blanking required
