DCS ADR24 Operations Instructions download pdf (Page 26)

26 VEGASON 51P … 53P

Swivelling holder

A swivelling holder enables not only correct

orientation to the product surface but also

minimisation of possible false echoes.

Our line of accessories contains a swivelling

holder (mounting loop) for mounting VE-

GASON 53. It enables optimum orientation of

the sensor to the product surface.

VEGASON 53 on vessel flange

Reference plane

Min. distance

4.3 Measurement of solids

Flange mounting

As with applications for liquids, the instrument

can be mounted on a short DIN socket con-

nection on vessels for solids. The transducer

axis should only point to the vessel outlet or

should be directed perpendicular to the

product surface and must be very short

(< 100 mm).

Mounting and installation

Shaft pump

Measuring tube

Shaft pump

³ 100 mm

see “4.4 Socket extension“

Socket piece

min.

distance

Meas. range

Example of a socket extension or measuring tube in a

shaft

Pump shaft

Narrow, uneven shafts, wells and vessel

openings with very rough walls and shoul-

ders make ultrasonic measurement ex-

tremely difficult due to strong false echoes.

This problem can be overcome by using an

extended socket piece or a complete meas-

uring tube (see chapter "4.5 Socket exten-

sion“).

Very good measuring results can be attained

with a measuring tube in continuous narrow

shafts, see figure. The applied measuring

tube must have smooth walls inside (e.g. PE

sewage pipe) and a diameter ³ 200 mm. This

arrangement works well as long as the inside

of the measuring tube collects no dirt or

buildup (cleaning necessary). You might

want to consider using hydrostatic pressure

transmitters or capacitive measuring probes.

Either the measuring tube should never be

immersed in the medium, or it must always

be immersed, so that the measurement is

carried out exclusively in the tube.

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