Vega VEGAPULS 62 Operating Instructions Manual page 24

VEGAPULS 62 • 4 ... 20 mA/HART two-wire
3 ... 4 h
max
90°
2
2
Fig. 16: Flow measurement with rectangular flume: d
sensor (see chapter "Technical data"); h
flume
Overflow orifice (side view)
1
2 Headwater
3 Tail water
Overfall orifice (view from bottom water)
4
In general, the following points must be observed:
Install the sensor on the headwater side
l
Installation in the centre of the flume and vertical to the liquid
l
surface
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
l
1
≥ 50 mm
3
3
= max. filling of the rectangular
max.
4 Mounting
90°
4
= min. distance of the
min.
23