VEGA VEGASON 51P…53P Profibus PA - Manual (Page 32)

32 VEGASON 51P … 53P
Mounting and installation
4.7 Incorrect mounting
Foam generation
Thick foam on the product can cause incor-
rect measurements. Take measures to avoid
foam, carry out the measurement in a bypass
tube, or use a different measuring technol-
ogy, e.g. capacitive measuring probes or
hydrostatic pressure transmitters.
Foam generation
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Orient the sensor perpendicularly to the product
surface
Wrong orientation to the product
Weak measuring signals are the result if the
sensor is not directly pointed at the product
surface. Orient the sensor axis perpendicu-
larly to the product surface to achieve opti-
mum measuring results.
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Strong heat fluctuations
Strong heat fluctuations, e.g. due to the sun,
cause measuring errors. Please provide a
sun shield.
Min. distance to the medium
If the min. distance to the medium is not main-
tained, the instruments show wrong meas-
ured values. Mount the instrument at the
required min. distance.
Sensor too close to the vessel wall
Sensor too close to the vessel wall
Correct Wrong
Strong heat fluctuations
Shield