Area Of Applicability; General Information - SICK NAMUR LFV 310 Instructions

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Area of applicability

These safety instructions apply to the vibrating level switches LFV 310/330.C******N/W** according
to EU type approval certificate PTB 16 ATEX 2008 X (certificate number on the type label) and for
all instruments with the number of the safety instruction (50668) on the type label.
The versions LFV 310/330.C******N/W** with the features "CA" and "CM" on the type label are
certified version with flame proofing intrinsic safety or flame proofing intrinsic safety also with a ship
certificate/overfill protection.
Feature "CX" in the type code:
Feature "CA" in the type code:
Feature "CM" in the type code:
The ship certificate and the certification as overfill protection are not subject of the assessment and
evaluation acc. to the EU Type approval certificate PTB 16 ATEX 2008 X.
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General information

The LFV 310/330.C******N/W** are used for monitoring and control of levels.
The measured products can also be combustible liquids, gases, mist or vapour.
The LFV 310/330.C******N/W** are suitable for use in hazardous atmospheres of all combustible
materials of explosion group IIA, IIB and IIC for applications requiring instruments of category 1G,
category 1/2G or category 2G.
If the LFV 310/330.C******N/W** are installed and operated in hazardous areas, the general Ex
installation regulations EN 60079-14 as well as these safety instructions must be observed.
The operating instructions as well as the installation regulations or standards that apply for explo-
sion protection of electrical systems must generally be observed.
The installation of explosion-endangered systems must always be carried out by qualified person-
nel.
Category 1G instrument (EPL-Ga instrument)
The LFV 310/330.C******N/W** are installed in hazardous areas requiring an instrument of category
1G.
Category 1/2G instrument (EPL-Ga/Gb instrument)
The electronics housing is installed in hazardous areas requiring an instrument of category 2G. The
process connection element is installed in the separating wall, which separates areas requiring in-
struments of category 2G or 1G. The antenna system with the mechanical fixing element is installed
in hazardous areas requiring instruments of category 1G.
Category 2G instrument (EPL-Gb instrument)
The LFV 310/330.C******N/W** are installed in hazardous areas requiring an instrument of category
2G.
Ignition protection label
II 1G, 1/2G, 2G Ex ia IIC T6 Ga, Ga/Gb, Gb
Important specification in the type code
LFV310/330(*).abcdefghij
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Certificate intrinsic safety Ex ia
Certificate intrinsic safety but also overfill protection
Certificate intrinsic safety but also ship certificate
LFV 310/330