VEGA VEGAPULS 56K - Manual (Page 11)

VEGAPULS 56K 11
22915-EN-041227
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Measuring range (operating range) and max. measuring distance
Note: Use of the sensors for applications with solids is limited.
full
Measuring range
max. meas. distance 20 m
3 Mounting and installation
3.1 General installation instructions
Measuring range
The reference plane for the measuring range
of the sensors is the lower edge of the flange.
The measuring range is 0 … 20 m. With
measurements in surge or bypass tubes
(pipe antenna) the max. measuring distance
decreases (see „Technical data - Measuring
range“).
Keep in mind that in measuring environments
where the medium can reach the sensor
flange, buildup may form on the antenna and
later cause measurement errors.
Reference plane
empty
Profiles with smooth interfering surfaces cause large
false signals
Round profiles diffuse radar signals
Cover smooth interfering surfaces with deflectors
Mounting and installation
False echoes
Flat obstructions and struts cause strong
false echoes. They reflect the radar signal
with high energy density.
Interfering surfaces with rounded profiles
scatter the radar signals into the surrounding
space more diffusely and thus generate false
echoes with a lower energy density. Hence,
those reflections are less critical than those
from a flat surface.
If flat obstructions in the range of the radar
signals cannot be avoided, we recommend
diverting the interfering signals with a deflec-
tor. The deflector prevents the interfering
signals from being directly received by the
radar sensor. The signals are then so low-
energy and diffuse that they can be filtered
out by the sensor.
min. meas.
distance min. min. meas.
distance
min. meas.
distance
full
empty