Mounting Instructions; Connecting To Power Supply; Preparing The Connection - SICK LFV 230 Manuel De Mise En Service

Connecting to power supply

Handling
Do not hold LFV 230 on the tuning fork. Bending the
vibrating element will destroy the instrument.

3.2 Mounting instructions

Welded socket
For threaded versions of LFV 230 in combination
with a mounting boss with O-ring in front and
welding marking.
LFV 230 with thread sizes ¾" and 1" have a dened
thread runout. This means that every LFV 230 is in
the same position after being screwed in. Remove
therefore the supplied at seal from the thread of
LFV 230. This at seal is not required when using a
welded socket with front-ush seal.
Before welding, unscrew LFV 230 and remove the
rubber ring from the welded socket.
The welded socket is provided with a marking
(notch). For horizontal mounting, weld the socket
with the notch facing upward or downward; in
pipelines (DN 25 to DN 50) aligned with the direction
of ow.
Fig. 16: Marking on the welded socket
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Marking
Adhesive products
In case of horizontal mounting in adhesive and
viscous products, the surfaces of the tuning fork
should be vertical. The position of the tuning fork is
indicated by a marking on the hexagon of LFV 230.
With this, you can check the position of the tuning
fork when mounting it.
In case of horizontal mounting in adhesive and
viscous products, the tuning fork should protrude
into the vessel to avoid buildup on the tuning fork.
16
Flows
To make sure the tuning fork of LFV 230 generates
as little resistance as possible to product ow,
mount the sensor so that the surfaces are parallel to
the product movement.
Agitators
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 LFV 230, but check if you can
mount a short vibrating 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 LFV 230 to vibrate
in resonance. This leads to increased stress on the
upper weld joint. Should a longer tube version be
necessary, you can provide a suitable support
directly above the tuning fork to secure the
extension tube.
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Fig. 17: Lateral suppot of LFV 230
4 Connecting to power supply

4.1 Preparing the connection

Note safety instructions
Always keep in mind the following safety instru-
ctions:
l
Subject to change without notice
Connect only in the complete absence of line
voltage
LFV 230