Datasheet

Subject to reasonable modifications due to technical advances. Copyright Pepperl+Fuchs, Printed in Germany
Pepperl+Fuchs Group • Tel.: Germany [phone] • USA [phone] • Singapore [phone] • Internet http://www.pepperl-fuchs.com
Inductive proximity switches
NJ2-11-N-G
PEPPERL+FUCHS GmbH www.pepperl-fuchs.com
2
2006-01-26 – 106378_ENG.xml
ATEX 1G
Instruction Manual electrical apparatus for hazardous areas
Device category 1G
for use in hazardous areas with gas, vapour and mist
Directive conformity 94/9/EG
Standard conformity EN 50014:1997; EN 50020:1994; EN 50284:1999
Ignition protection "Intrinsic safety"
Use is restricted to the following stated conditions
CE symbol
0102
Ex-identification ¬ II 1G EEx ia IIC T6
EC-Type Examination Certificate PTB 00 ATEX 2048 X
Appropriate type NJ 2-11-N-G...
Effective internal capacitance C
i
≤ 30 nF ; a cable length of 10 m is considered.
Effective internal inductance L
i
≤ 50 µH ; a cable length of 10 m is considered.
Cable length Dangerous electrostatic charges on the fixed connection cable must be taken
into account for lengths equal to and exceeding the following values:
Explosion group IIA 96 cm
Explosion group IIB 48 cm
Explosion group IIC 7 cm
General The apparatus has to be operated according to the appropriate data in the data
sheet and in this instruction manual.
The EU prototype test certificate must be observed. The special conditions must
be adhered to!
Directive 94/9EG and hence also EU prototype test certificates apply in general
only to the use of electrical apparatus under atmospheric conditions
The use in ambient temperatures of > 60 °C was tested with regard to hot sur-
faces by the mentioned certification authority.
If the equipment is not used under atmospheric conditions, a reduction of the
permissible minimum ignition energies may have to be taken into consideration.
Highest permissible ambient temperature The temperature ranges, according to temperature class, are given in the EU
prototype test certificate. Note: Use the temperature table for category 1 !!! The
20 % reduction in accordance with EN 1127-1:1997 has already been
accounted for in the temperature table for category 1.
Installation, Comissioning Laws and/or regulations and standards governing the use or intended usage
goal must be observed. The intrinsic safety is only assured in connection with
an appropriate related apparatus and according to the proof of intrinsic safety.
The associated apparatus must satisfy the requirements of category "ia" and
have electrical isolation between the power supply and signal circuits.
Maintenance No changes can be made to apparatus, which are operated in hazardous areas.
Repairs to these apparatus are not possible.
Special conditions
Protection from mechanical danger When used in the temperature range below -20°C the sensor should be pro-
tected from knocks by the provision of an additional housing.
Electrostatic charging Electrostatic charges on the metal housing components must be avoided. Dan-
gerous electrostatic charges on the metal housing components can be avoided
by incorporating these components in the equipotential bonding.