Operating Instructions - VEGAPULS 54K enamel
Operating Instructions - VEGAPULS 54K enamel
Operating Instructions - VEGAPULS 54K enamel
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24 101-EN-041227<br />
Mounting and installation<br />
Strong product movements<br />
Strong turbulence in the vessel, e.g. caused<br />
by powerful stirrers or strong chemical reactions,<br />
can seriously interfere with the measurement.<br />
A surge or bypass tube (see<br />
illustration) of sufficient size always enables<br />
reliable and problem-free measurement even<br />
if strong turbulence occurs in the vessel,<br />
provided there is no product buildup in the<br />
tube.<br />
Correct Incorrect<br />
> 500 mm<br />
Strong product movements<br />
100 %<br />
75 %<br />
Products tending to slight buildup can be<br />
detected by using a measuring tube with<br />
150 mm nominal width or more. In a measuring<br />
tube of this size, buildup does not cause<br />
any problems.<br />
0 %<br />
2.4 Common installation mistakes<br />
Socket piece too long<br />
If the sensor is mounted in a socket extension<br />
that is too long, strong false echoes are<br />
generated which interfere with the measurement.<br />
Make sure that the horn antenna protrudes<br />
at least 10 mm out of the socket piece.<br />
Correct Incorrect<br />
<strong>VEGAPULS</strong> <strong>54K</strong> <strong>enamel</strong> 13<br />
> 10 mm<br />
Correct and incorrect socket length<br />
Parabolic effects on dished or arched<br />
vessel tops<br />
Round or parabolic tank tops act on the radar<br />
signals like a parabolic mirror. If the radar<br />
sensor is placed at the focal point of such a<br />
parabolic tank top, the sensor receives amplified<br />
false echoes. The optimum mounting<br />
location is generally in the range of half the<br />
vessel radius from the centre.<br />
< 10 mm<br />
1 /2<br />
radius<br />
Correct<br />
Mounting on a vessel with parabolic tank top<br />
Incorrect<br />
Incorrect