VEGA VEGAPULS 51V…54V - Manual (Page 35)

VEGAPULS 51 V … 54 V 35
Mounting and installation - Measurement in standpipe
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VEGAPULS 54
Flange DN 100
Smooth welding flange
Connection
sleeves
Welding neck
flanges
Welding of the smooth
welding neck flange
Welding of the
welding neck flange
Measuring pipe
fastening
Vessel bottom
Deflector
On the left you see the contruction of a
measuring pipe on the example of a radar
sensor with a DN 100 flange.
Radar sensors with flanges of DN 80,
DN 100 and DN 150 are equipped with a
horn antenna. Instead of the welding neck
flange also a smooth welding flange can be
used on the sensor side of these sensors.
In agitated products, fasten the measuring
pipe to the vessel bottom. Provide additional
fastenings for longer measuring pipes.
With the deflector on the measuring pipe end,
the radar signals are reflected from the
vessel bottom. This avoids that in nearly
empty vessel and products with low
dielectric constant figures, not the measured
product but the vessel bottom is detected. In
products with low dielectric constant figure
the product is penetrated by radiation and
the vessel bottom delivers at low level
considerably clearer radar echoes than the
product surface.
Due to the deflector, the useful signal remains
and hence the measured value can be
clearly detected in nearly empty vessel and
the 0 % level is reliably detected.
Rz ≤ 30
Burr the
holes