Authorised Personnel; Appropriate Use; Warning About Incorrect Use; General Safety Instructions - SICK LFV 200 Manuel De Mise En Service

2 Product description

1 For your safety
1.1

Authorised personnel

All operations described in this operating
instructions manual must be carried out only by
trained specialist personnel authorised by the
plant operator.
During work on and with the device the required
personal protective equipment must always be
worn.
1.2

Appropriate use

The LFV 200 is a sensor for point level detec-
tion.
You can find detailed information on the appli-
cation range of LFV 200 in chapter "Product
description".
1.3

Warning about incorrect use

Inappropriate or incorrect use of the instrument
can give rise to application-specific hazards,
e.g. vessel overfill or damage to system compo-
nents through incorrect mounting or adjustment.
1.4

General safety instructions

This is a state-of-the-art instrument complying
with all prevailing regulations and guidelines.
The instrument must only be operated in a
technically flawless and reliable condition. The
operator is responsible for the trouble-free
operation of the instrument.
During the entire duration of use, the user is
obliged to determine the compliance of the
necessary occupational safety measures with
the current valid rules and regulations and also
take note of new regulations.
The safety instructions in this operating instruc-
tions manual, the national installation standards
as well as the valid safety regulations and
accident prevention rules must be observed by
the user.
For safety and warranty reasons, any invasive
work on the device beyond that described in the
operating instructions manual may be carried
out only by personnel authorised by the manu-
facturer. Arbitrary conversions or modifications
are explicitly forbidden.
The safety approval markings and safety tips on
14
the device must also be observed.
1.5

CE conformity

The protection goals of the EMC Directive
2004/108/EC (EMC) and the Low Voltage Direc-
tive 2006/95/EC (LVD) are fulfilled.
Conformity has been judged according to the
following standards:
EMC: EN 61326-1
(electrical instruments for control technology
and laboratory use - EMC requirements)
•
Emission: Class B
•
Susceptibility: Industrial areas
LVD: EN 61010-1
(safety regulations for electrical measurement,
control and laboratory instruments - part 1:
General requirements)
2 Product description
2.1

Configuration

Scope of delivery
The scope of delivery encompasses:
•
LFV 200 point level switch
•
Test magnet
•
Documentation
– this operating instructions manual
– WRA certificate (optional)
2.2

Principle of operation

Application area
LFV 200 is a point level sensor with tuning fork
for point level detection.
It is designed for industrial use in all areas of
process technology and is used in liquids.
Function monitoring
The electronics module of LFV 200 conti-
nuously monitors via frequency evaluation the
following criteria:
•
Strong corrosion or damage on the tuning
fork
•
Loss of vibration
•
Line break to the piezo drive
If a malfunction is detected or in case of power
failure, the electronics takes on a defined
switching condition, i.e. the output is open (safe
LFV 200 • Tuning Fork