Siemens SITRANS LVL200E Manual de Instruções - Página 17
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Agitators
Enamel coating
Gas-tight leadthrough
MAN-100411
Due to the effects of agitators, equipment vibration or similar, the
level switch can be subjected to strong lateral forces. For this reason,
do not use an overly long extension tube for SITRANS LVL200E,
but check if you can mount a 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
SITRANS LVL200E 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 suppot of SITRANS LVL200E
Instruments with enamel coating should be treated very carefully and
shocks should be avoided. Unpack SITRANS LVL200E directly before
installation. Insert SITRANS LVL200E carefully into the vessel open-
ing and avoid touching any sharp vessel parts.
The second seal of the gas-tight leadthrough (option) prevents an
uncontrolled leakage of the medium. The service life of the gas-tight
leadthrough depends on the chemical resistance of the materials.
See "Technical data".
Caution:
If it is determined (e.g. via an error message from SITRANS LVL200E)
that medium has already penetrated into the vibrating element, the
instrument must be exchanged immediately.
SITRANS LVL200E - Operating Instructions
17