VEGA VEGASWING 63 - two-wire - Manual (Page 14)

14
4 Mounting
VEGASWING 63 • - two-wire
29232-EN-130409
long extension tube for VEGASWING 63, but check if you can mount
a VEGASWING 61 level switch on the side of the vessel in horizontal
position.
Extreme vibration caused by the process or the equipment, e.g.
agitators or turbulence in the vessel, can cause the extension tube
of VEGASWING 63 to vibrate in resonance. This leads to increased
stress on the upper weld joint. Should a longer tube version be neces-
sary, you can provide a suitable support directly above the tuning fork
to secure the extension tube.
This measure applies mainly to applications in Ex areas category 1G
or WHG. Make sure that the tube is not subject to bending stress due
to this measure.
Fig. 9: Lateral straining of VEGASWING 63
Instruments with enamel coating should be treated very carefully and
shocks should be avoided. Unpack VEGASWING 63 directly before
installation. Insert VEGASWING 63 carefully into the vessel opening
and avoid touching any sharp vessel parts.
The gas-tight leadthrough avoids due to a second sealing the
uncontrolled penetration of the medium. The lifetime of the gastight
leadthrough depends ont he chemical resistance of the materials.
See "Technical data".
Caution:
If it is determined (e.g. by an error message of VEGASWING 63) that
medium has already penetrated into the vibrating element, the instru-
ment must be exchanged immediately.
Enamel coating
Gas-tight leadthrough