VEGA VEGAPULS 51K…54K Profibus PA - Manual (Page 20)

20 VEGAPULS 51P … 54P
24890-EN-041227
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Openings in a surge pipe for mixing of inhomogene-
ous products
slightly inhomogeneous
liquids
inhomogeneous liquids
homogeneous
liquids
Pipe antenna with DN 50. DN 80. DN 100 and DN 150
DN 150 DN 50
ш 50 ш 150
Standpipe measurement of inhomoge-
neous products
If you want to measure inhomogeneous or
stratified products in a surge pipe, it must
have holes, elongated holes or slots. These
openings ensure that the liquid is mixed and
corresponds to the liquid in the vessel.
In extremely adhesive products, measure-
ment in a standpipe is not possible at all.
Adhesive products
In adhesive products, use a surge pipe with
a larger inner diameter. In non-adhesive
products, a 50 mm measuring tube is a good
and cost-effective solution. In slightly adhe-
sive products, use a surge pipe with a nomi-
nal width of 100 mm or 150 mm. so that
buildup cannot cause measurement errors.
Mounting and installation