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
5
2006-01-26 – 106378_ENG.xml
ATEX 3G (nL)
Instruction Manual electrical apparatus for hazardous areas
Device category 3G (nL) for use in hazardous areas with gas, vapour and mist
Directive conformity 94/9/EG
Standard conformity EN 50021:2000 Ignition protection category "n"
Use is restricted to the following stated conditions
CE symbol
0102
Ex-identification ¬ II 3G EEx nL IIC T6 X
The Ex-relevant identification may also be printed on the accompanying adhe-
sive label.
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.
General The apparatus has to be operated according to the appropriate data in the data
sheet and in this instruction manual. The data stated in the data sheet are
restricted by this operating instruction!
The special conditions must be observed!
Directive 94/9EG is generally applicable only to the use of electrical apparatus
operating at atmospheric conditions.
If the equipment is not used under atmospheric conditions, a reduction of the
permissible minimum ignition energies may have to be taken into consideration.
Installation, Comissioning Laws and/or regulations and standards governing the use or intended usage
goal must be observed. The sensor must only be operated with an energy-lim-
ited circuit, which satisfies the requirements of IEC 60079-15. The explosion
group depends on the connected and energy-limited supply circuit.
If the Ex-relevant identification is printed exclusively on the adhesive label pro-
vided, this label must be affixed in the immediate vicinity of the sensor! The
background surface to which the adhesivelabel is to be applied must be clean
and free from grease! The applied label must be durable and remain legible,
with due consideration of the possibility of chemical corrosion!
Maintenance No changes can be made to apparatus, which are operated in hazardous areas.
Repairs to these apparatus are not possible.
[Fett]Special conditions
Maximum permissible ambient temperature T
Umax
at Ui = 20 V
for Pi=34 mW, Ii=25 mA, T6 70 °C (343 K)
for Pi=34 mW, Ii=25 mA, T5 85 °C (358 K)
for Pi=34 mW, Ii=25 mA, T4-T1 100 °C (373 K)
for Pi=64 mW, Ii=25 mA, T6 70 °C (343 K)
for Pi=64 mW, Ii=25 mA, T5 85 °C (358 K)
for Pi=64 mW, Ii=25 mA, T4-T1 100 °C (373 K)
for Pi=169 mW, Ii=52 mA, T6 62 °C (335 K)
for Pi=169 mW, Ii=52 mA, T5 77 °C (350 K)
for Pi=169 mW, Ii=52 mA, T4-T1 81 °C (354 K)
for Pi=242 mW, Ii=76 mA, T6 54 °C (327 K)
for Pi=242 mW, Ii=76 mA, T5 63 °C (336 K)
for Pi=242 mW, Ii=76 mA, T4-T1 63 °C (336 K)
Protection from mechanical danger The sensor must not be mechanically damaged.
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 must be avoided on the mechanical housing components.
Dangerous electrostatic charges on the mechanical housing components can
be avoided by incorporating these in the equipotential bonding.
Connection parts The connection parts are to be installed, such that a minimum protection class
of IP20 is achieved, in accordance with IEC 60529.