Applications
A.1 Liquids applications
Transducers
42
Compact Operating Instructions, 09/2021, A5E43390688-AC
①
Explosion proof conduit seal
②
Transducer
③
Submergence shield
1) 2)
④
Air pocket
* on applicable models
1)
On applicable models
2)
Refer to associated instruction manual 7ML19981EG01 for assembly details
A.1.3
Standpipes
Open Channel Flow Measurement
In many applications, access must be made via a standpipe. In such cases, a Siemens flange
adapter can be used to mate to the flanged standpipe. Another option is to hang the
transducer from a blind flange, respecting chemical compatibility.
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 or larger area. Otherwise, additional blanking will be
required to compensate for the interference zone created by the opening.
Note
When using a stilling well, make sure there is no build-up, welds, couplings, or other debris
on the inside of the well wall. This can affect reliability of level measurement.
