VEGA VEGAPULS 81 - Manual (Page 38)

38 VEGAPULS 64 and 81
Mounting and installation: Measurements of liquids
Adhesive products
When measuring adhesive products, the inner
diameter of the surge pipe must be larger. For
slightly adhesive products or products neutral
to adhesions, a measuring pipe of 50 mm is
good and cheap. For adhesive products the
surge pipe must have a larger nominal width
(e.g. 100 mm) so that build-up does not cause
Measuring errors. Surge pipe diameters of DN
50 to DN 150 can be selected.
Pipe antenna with DN 50, DN 80, DN 100 and
DN 150
DN 150 DN 100
DN 80 DN 50
ш150 ш100
ш80 ш50
Inhomogeneous products
If you want to measure inhomogeneous or
laminated products in a surge pipe, the surge
pipe must be provided with holes, long holes
or slots. These openings ensure that the liquid
in the pipe is mixed and corresponds to the
rest of the vessel liquid.
The more inhomogeneous the measured prod-
uct, the tighter the openings should be.
Opening in the surge pipe with inhomogene-
ous products
Breather hole for
homogeneous prod-
ucts
Row of holes for
slightly inhomogene-
ous products
Dense two of holes
with inhomogeneous
products
Row of slots with
strongly inhomogene-
ous products