Accessories; Mounting; General Instructions - SICK LFC Manuel De Mise En Service

4 Mounting

Storage and transport temperature
The permissible storage and transport tempe-
ratures can be found in chapter "Supplement
- Technical data - Ambient conditions"
3.5

Accessories

The instructions for the listed accessories can
be found in the download area on our home-
page.
Threaded and hygienic socket
Various threaded and hygienic sockets are
available for devices with threaded version.
You can find further information in the "Technical
data"
4 Mounting
4.1

General instructions

Ambient conditions
The instrument is suitable for standard and
extended ambient conditions acc. to DIN/EN/
IEC/ANSI/ISA/UL/CSA 61010-1. It can be used
indoors as well as outdoors.
Process conditions
Note:
For safety reasons, the instrument must
only be operated within the permissible
process conditions. You can find detailed
information on the process conditions in
chapter "Technical data" of the operating
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
In general, 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
20
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
areas where high humidity is expected (e.g.
through cleaning processes) and on cooled or
heated vessels.
Make sure that the degree of contamination
specified in chapter "Technical data" meets the
existing ambient conditions.
Handling
The level switch is a measuring device for
stationary screw mounting and must be treated
accordingly. Damage to the electrode will dest-
roy the instrument.
Caution:
The housing must not be used for
screwing in!
Use the hexagon above the thread for
screwing in.
1
3
LFC • Transistor (PNP)