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
NCN4-12GM35-N0
PEPPERL+FUCHS GmbH www.pepperl-fuchs.com
2
2006-05-03 – 181100_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 NCN4-12GM...-N0...
Effective internal capacitance C
i
≤ 95 nF ; a cable length of 10 m is considered.
Effective internal inductance L
i
≤ 100 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 100 cm
Explosion group IIB 50 cm
Explosion group IIC 8 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 EC-Type Examination 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 EC-
Type Examination Certificate. Note: Use the temperature table for category 1 !!!
The 20 % reduction in accordance with EN 1127-1 has already been applied to
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.
Due to the possible danger of ignition, which can arise due to faults and/or tran-
sient currents in the equipotential bonding system, galvanic isolation of the
power supply and signal circuit is preferable. Associated apparatus without elec-
trical isolation must only be used if the appropriate requirements of IEC 60079-
14 are met.
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 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.