Vega VEGAPULS 61 (≥ 2.0.0 - ≤ 3.8) 4 … 20 mA__HART two- Bedienungsanleitung PDF herunterladen (Seite 21)

100%

> 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 sens or

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

VEGAPULS 61 • 4 … 20 mA/HART two-wire 21

4 Mounting

28434-EN-100426

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Vega VEGAPULS 61 (≥ 2.0.0 - ≤ 3.8) 4 … 20 mA__HART two- Bedienungsanleitung Seite 21