VEGA VEGAPULS 62 (≥ 2.0.0 - ≥ 4.0.0) Modbus and Levelmaster protocol Approval according to LPR radio standard - Manual (Page 23)

1 2
Fig. 16: Mounting of the instrument in an subsurface enclosure
1 Subsurface enclosure
2 Concrete bottom
For this application, the minimal amounts of stray radiation from the
sensor can be reflected and strengthened by the walls of the
subsurface enclosures. In the case of sensors with plastic housings,
this can lead to coupling disturbances. This can be avoided by using a
sensor with aluminium or stainless steel housing.
The short examples give you introductory information on the flow
measurement. Detailed planning information is available from flume
manufacturers and in special literature.
3 ... 4 h
max
≥ 50 mm
90°
2 3
1
h m
a
x
d m
in
≥
2
m
m
x
h
m
a
x
90°
4 2 3
Fig. 17: Flow measurement with rectangular flume: d
min.
= min. distance of the
sensor (see chapter "Technical data"); h
max.
= max. filling of the rectangular
flume
1 Overflow orifice (side view)
2 Headwater
3 Tail water
4 Overfall orifice (view from bottom water)
In general, the following points must be observed:
l Install the sensor on the headwater side
Flow measurement with
rectangular flume
VEGAPULS 62 • Approval according to LPR radio standard 23
4 Mounting
41722
-EN
-120706