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

1 For your safety

1.1 Authorised personnel

All operations described in this operating instru-
ctions manual must be carried out only by trained
specialist personnel authorised by the plant opera-
tor.
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 detection.
You can nd detailed information on the application
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-specic hazards, e.g. vessel
overll or damage to system components through
incorrect mounting or adjustment.

1.4 General safety instructions

This is a high-tech instrument requiring the strict
observance of standard regulations and guidelines.
The user must take note of the safety instructions in
this operating instructions manual, the country-
specic installation standards as well as all prevai-
ling safety regulations and accident prevention rules.
The instrument must only be operated in a
technically awless and reliable condition. The
operator is responsible for 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.

1.5 CE conformity

The protection goals of the EMC Directive 2004/
108/EC (EMC) and the Low Voltage Directive 2006/
95/EC (LVD) are fullled.
LFV 200
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
l
Susceptibility: Industrial areas
l
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
l
Test magnet
l
Documentation
l
-
-

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 use in liquids in the food and
pharmaceutical industries.
Function monitoring
The electronics module of LFV 200 continuously
monitors via frequency evaluation the following
criteria:
Strong corrosion or damage on the tuning fork
l
Loss of vibration
l
Line break to the piezo drive
l
If a malfunction is detected or in case of power
failure, the electronics takes on a dened switching
condition, i.e. the output is open (safe condition).
Functional principle
The tuning fork is piezoelectrically energised and
vibrates at its mechanical resonance frequency of
approx. 1100 Hz. When the tuning fork is submer-
Subject to change without notice
this operating instructions manual
WRA certicate (optional)
For your safety
13