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Level limit switch
Series VN 4000
Technical Information / Instruction manual
page G
Notes for use in Hazardous Locations
Zone classification
Usable in
zone
ATEX
category
IEC-Ex
Equipement Protection
Level (EPL)
Dust applications
20, 21, 22
1 D
Da
* in case of conductive dust
additional demands for the
installation are possible.
21, 22
2 D
Db
22
3 D*
Dc
General Notes
Marking
Devices with EX approval are marked on the name plate.
Process pressure
The device construction allows process over-pressure up to 16 bar (232psi). These pressures are
allowed for test purposes. The definition of the Ex approval are only valid for a container-over-
pressure between -0.2..+0.1 bar (-2.9..+1.45psi).
For higher or lower pressures the approvals are not valid.
Process and ambient
temperature
The permitted temperature ranges are marked on the name plate.
The max. permitted ambient and process temperatures (including temperature derating) stated in
this manual must be observed.
Permitted zones for mounting in partition wall
EPL (IEC-Ex)
Db
Category (ATEX)
2D
Zone
21
EPL (IEC-Ex)
Da
Category (ATEX)
1D
Zone
20
Vibranivo
®
1
2
3
4
5
6
7
8
9
10
11
12
VN 4000 a
gi161213
16
VN 4020 VN 4030