VEGA VEGASWING 83 fail safe and signal conditioning instrument VEGATOR 526 Ex User Manual

Page 15

VEGASWING 81 W5 Ex.C, 83 W5 Ex.C fail safe

Mounting

Cable entries

Use cable with round cross section area of
conductor and tighten the cable entry. The
cable entry is suitable for cable diameters
from 5␣ mm to 12␣ mm.

Lateral load

Note that the vibrating element is not
subjected to lateral forces. Mount the
instrument on a position in the vessel where
no interfering influences such as e.g. by
stirrers, filling openings etc. occur. This is
mainly due for instrument types with extension
tube (see fig. 2.5). The surfaces of the tuning
fork should be in parallel to the product
movement so that there is only little resistance
by the tuning fork of VEGASWING in case of
product movements.

VEGASWING with enamel

Treat the instruments with enamel-coating very
carefully and avoid strong shocks or impacts.
Unpack VEGASWING just before mounting.
Insert VEGASWING carefully into the provided
vessel opening and avoid any contact with
sharp-edged vessel parts.

Flow

(e.g. in tubes)
When mounting in tubes or in vessels with
certain flow direction, VEGASWING should be
mounted such that the surfaces of the tuning
fork must be along the flow direction.

Mounting boss

VEGASWING has a defined beginning of
thread. This means that each VEGASWING is
always in the same position after screwing in.
Hence remove the supplied seal from the
thread of VEGASWING. This thread is not
necessary when using a mounting boss.
Screw VEGASWING into the mounting boss.

You can determine the later position of
VEGASWING already before welding (see fig.
2.2). Mark the appropriate position of the
mounting boss. Before welding, you have to
unscrew VEGASWING and remove the rubber
ring from the mounting boss.

Optionally a mounting boss is available which
is already provided with the marking. Weld
this mounting boss with the marking to the top
(see fig. 2.6).

Chemical resistance

For applications in Ex-areas or acc. to
WHG and VbF, VEGASWING must
only be used in liquids to which the

materials of the tuning fork system are
sufficiently chemically resistant.

Fig. 2.5

Fig. 2.6

Marking
(option)