VEGA VEGAPULS 51V…54V - Manual (Page 34)

34 VEGAPULS 51 V … 54 V
Construction instructions for the surge pipe
Radar sensors for measurement on surge or
bypass pipes are used in flange sizes
DN 50, DN 80, DN 100 and DN 150.
On the left is the construction of a measuring
pipe (surge or bypass pipe) on the example
of a sensor with a DN 50 flange.
The radar sensor with a DN 50 flange is only
in conjunction with a measuring pipe a
functional system.
The measuring pipe must be smooth inside
(average roughness Rz - 30). Use as
measuring pipe a stainless steel pipe without
joint. Extend the measuring pipe to the
required length with welding neck flanges or
with connecting sleeves. Note that no
shoulders are caused in the pipe during
welding. Fasten the pipe and the flange
before welding in alinement with the inner
sides.
Do not just weld through the pipe wall. The
pipe must be smooth inside. Roughnesses or
joints must be removed carefully as
otherwise strong false echoes and build-up
will be caused.
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VEGAPULS 54
Flange DN 50
Welding neck flange
Connecting
sleeves
Welding neck
flanges
Welding of the
connecting sleeve
Welding of the
welding neck flange
Fastening of meas.
pipe
Vessel bottom
Deflector
Min. product level to be
measured (0 %)
Rz ≤ 30
Burr the
holes
Mounting and installation - Measurement in standpipe