VEGA VEGAPULS 45 VBUS - Manual (Page 20)

20 VEGAPULS 42, 44 and 45 – VBUS
Conducting tube in existing surge or bypass tube
Extended conducting tube
Conducting tube
Use of conducting tubes
(VEGAPULS 44)
In case of very rough inner surfaces in exist-
ing bypass tubes (e.g. due to corrosion) or
in case of big connection openings as well as
bypass tubes with an inner diameter of more
than 100 mm, the use of a conducting tube in
the existing bypass tube is recommended.
This reduces the noise level and increases
reliability considerably. The flange of the
conducting tube can be easily mounted as a
sandwich flange between vessel and sensor
flange.
To increase the min. distance, the conducting
tube can protrude out of the surge or bypass
tube. For this purpose, a plain flange can be
welded at the required position on the out-
side of the extended conducting tube. In
both cases, an adequate vent hole must be
provided.
Welding beads too large
Tube connection protrudes
Additional connection to the bypass tube in one plane
Mounting and installation