VEGA VEGAPULS 54K enamel - Manual (Page 9)

VEGAPULS 54K enamel 9
24 101-EN-041227
Mounting and installation
Measuring range (operating range) and max. measur-
ing distance
Note: Use of the sensors for applications with solids
is limited.
max. meas. distance 20 m
2 Mounting and installation
2.1 General installation instructions
Measuring range
The reference plane for the measuring range
of the sensor is the enamelled sensor seal
shoulder, against which the enamelled vessel
seal is placed. The measuring range is
0 … 20 m. For measurements in surge or
bypass tubes (pipe antenna) the max. meas-
uring distance decreases by approx. 0.5 m.
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.
Profiles with flat interfering surfaces cause large
false signals
Round profiles diffuse radar signals
Cover flat interfering surfaces with deflectors
max. filling
full empty
Measuring range
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.
Reference plane