VEGA VEGAPULS 61 (≥ 2.0.0 - ≤ 3.8) Profibus PA - Manual (Page 22)

100%
0%
1
> 500 mm
Fig. 16: VEGAPULS 61 in a bypass tube. The polarisation marking on the
process fitting must be in one plane with the tube holes or the tube connection
openings.
1 Marking of the polarisation direction
When the sensor is mounted on a bypass tube, the distance from
VEGAPULS
61 to the upper tube connection should be approx.
500 mm (19.69 in) or more. In case of extremely rough tube inner
walls, you should use an inserted tube (tube in tube) or a radar sensor
with tube antenna.
The short examples are meant to give only introductory information on
the flow measurement. Planning information is available from flume
manufacturers and in special literature.
Meas. wall with rectangular flume
In general, the following points must be observed:
l Install the sensor on the headwater side
l Installation in the centre of the flume and vertical to the liquid
surface
l Distance to the overfall orifice
l Distance of orifice opening above ground
l Min. distance of the orifice opening to bottom water
l Min. distance of the sensor to max. storage level
Flow measurement
22 VEGAPULS 61 • Profibus PA
4 Mounting
28444
-EN
-100426