Mounting Instructions - SICK LFC Manual De Instrucciones

process conditions. You can find detailed
information on the process conditions in
chapter " Technical data" of the opera-
ting instructions or on the type label.
Hence make sure before mounting that all parts
of the instrument exposed to the process are
suitable for the existing process conditions.
These are mainly:
•
Active measuring component
•
Process fitting
•
Process seal
Process conditions in particular are:
•
Process pressure
•
Process temperature
•
Chemical properties of the medium
•
Abrasion and mechanical influences
Switching point
The LFC can be mounted in any position. The
instrument must be mounted in such a way
that the sensor is at the height of the requested
switching point.
2
Abb. 13: Installation examples
1 Upper level detection (max.) as overflow protec-
tion
2 Lower level detection (min.) as dry run protection
3 Dry run protection (min.) for a pump
Note that the switching point varies depending
on the type of medium and the mounting positi-
on of the sensor.
Protection against moisture
Protect your instrument against moisture in-
gress through the following measures:
•
Firmly tighten the plug connector
•
Lead the connection cable downwards in
front of the plug connector
This applies mainly to outdoor installations, in
LFC • Transistor (PNP)
areas where high humidity is expected (e.g.
through cleaning processes) and on cooled or
heated vessels.
Handling
The level switch is a measuring device for
stationary screw mounting and must be treated
accordingly. Damage to the measuring tip will
destroy the instrument.
Use the hexagon above the thread for screwing
in.
After mounting, make sure that the process
fitting is screwed in correctly and thus securely
seals even at maximum process pressure.
4.2
Adhesive products
In adhesive and viscous media, the surfaces
of the sensor should protrude into the vessel
to avoid buildup. Therefore mounting bosses
should not exceed a certain length.
1
Abb. 14: Adhesive products
In horizontal pipelines, avoid mounting in the
upper or lower area of the pipe.
In the upper part of the pipe cavities can form
due to air inclusions.
3
Solids can settle in the lower pipe area. Both
can lead to measurement errors.
In horizontal pipelines, lateral installation is
therefore recommended.

Mounting instructions

4 Mounting
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