1
Inductive sensor NJ5-18GK-SN
Release date: 2015-04-25 23:32 Date of issue: 2015-04-26 106643_eng.xml
Germany: +49 621 776 4411Pepperl+Fuchs Group
Refer to “General Notes Relating to Pepperl+Fuchs Product Information”.
USA: +1 330 486 0001 Singapore: +65 6779 9091
www.pepperl-fuchs.com fa-info@us.pepperl-fuchs.com fa-info@sg.pepperl-fuchs.com
fa-info@de.pepperl-fuchs.com
0102
Model Number
NJ5-18GK-SN
Features
•5 mm flush
• Usable up to SIL 3 acc. to IEC 61508
Application
Danger!
In safety-related applications the
sensor must be operated with a
qualified fail safe interface from
Pepperl+Fuchs, such as KFD2-SH-EX1.
Consider the "exida Functional Safety As-
sessment" document which is available on
www.pepperl-fuchs.com as an integral part
of this product’s documentation.
Accessories
BF 18
Mounting flange, 18 mm
Technical Data
General specifications
Switching element function NAMUR, NC
Rated operating distance sn5 mm
Installation flush
Output polarity Safety Function
Assured operating distance sa0 ... 4.05 mm
Reduction factor rAl 0.4
Reduction factor rCu 0.3
Reduction factor r304 0.85
Nominal ratings
Nominal voltage Uo8 V DC
Switching frequency f 0 ... 500 Hz
Current consumption
Measuring plate not detected ≥ 3 mA
Measuring plate detected ≤ 1 mA
Ambient conditions
Ambient temperature -40 ... 100 °C (-40 ... 212 °F)
Mechanical specifications
Connection type cable silicone , 2 m
Core cross-section 0.75 mm2
Housing material PP
Sensing face PP
Degree of protection IP68
General information
Use in the hazardous area see instruction manuals
Category 1G; 2G; 3G; 1D
Compliance with standards and directives
Standard conformity
NAMUR EN 60947-5-6:2000
IEC 60947-5-6:1999
Standards EN 60947-5-2:2007
IEC 60947-5-2:2007
Approvals and certificates
FM approval
Control drawing 116-0165F
UL approval cULus Listed, General Purpose
CSA approval cCSAus Listed, General Purpose
CCC approval CCC approval / marking not required for products rated ≤36 V
Dimensions
Electrical Connection
24
35.5
1
39
M18 x 1
44
BN L+
L-
BU
Germany: +49 621 776 4411Pepperl+Fuchs Group
Refer to “General Notes Relating to Pepperl+Fuchs Product Information”.
USA: +1 330 486 0001 Singapore: +65 6779 9091
www.pepperl-fuchs.com fa-info@us.pepperl-fuchs.com fa-info@sg.pepperl-fuchs.com
fa-info@de.pepperl-fuchs.com
Inductive sensor NJ5-18GK-SN
2
Release date: 2015-04-25 23:32 Date of issue: 2015-04-26 106643_eng.xml
ATEX 1G
Instruction Manual electrical apparatus for hazardous areas
Device category 1G
for use in hazardous areas with gas, vapour and mist
EC-Type Examination Certificate PTB 00 ATEX 2049 X
CE marking 0102
ATEX marking ¬ II 1G Ex ia IIC T6…T1 Ga
Directive conformity 94/9/EG
Standards EN 60079-0:2012, EN 60079-11:2012, EN 60079-26:2007
Ignition protection "Intrinsic safety"
Use is restricted to the following stated conditions
Appropriate type NJ 5-18GK-SN...
Effective internal capacitance Ci ≤ 120 nF ; a cable length of 10 m is considered.
Effective internal inductance Li ≤ 200 µH ; a cable length of 10 m is considered.
Ge n e r a l The apparatus has to be operated according to the appropriate data in the data sheet
and in this instruction manual. The EC-Type Examination Certificate has to be
observed. The special conditions must be adhered to!
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 1127-1:2007 has already been accounted for in the
temperature table for category 1.
Installation, commissioning 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 appara-
tus 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 transient
currents in the equipotential bonding system, galvanic isolation of the power supply
and signal circuit is preferable. Associated apparatus without electrical 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 protected
from knocks by the provision of an additional housing.
Electrostatic charge When used in group IIC non-permissible electrostatic charges should be avoided on
the plastic housing parts. Information on electrostatic hazards can be found in the
technical specification IEC/TS 60079-32-1. Additional requirements for gas group
IIC. Avoid electrostatic charges that can cause electrostatic discharge when install-
ing or operating the device.
Germany: +49 621 776 4411Pepperl+Fuchs Group
Refer to “General Notes Relating to Pepperl+Fuchs Product Information”.
USA: +1 330 486 0001 Singapore: +65 6779 9091
www.pepperl-fuchs.com fa-info@us.pepperl-fuchs.com fa-info@sg.pepperl-fuchs.com
fa-info@de.pepperl-fuchs.com
Inductive sensor NJ5-18GK-SN
3
Release date: 2015-04-25 23:32 Date of issue: 2015-04-26 106643_eng.xml
ATEX 2G
Instruction Manual electrical apparatus for hazardous areas
Device category 2G for use in hazardous areas with gas, vapour and mist
EC-Type Examination Certificate PTB 00 ATEX 2049 X
CE marking 0102
ATEX marking ¬ II 1G Ex ia IIC T6…T1 Ga
Directive conformity 94/9/EG
Standards EN 60079-0:2012, EN 60079-11:2012
Ignition protection "Intrinsic safety"
Use is restricted to the following stated conditions
Appropriate type NJ 5-18GK-SN...
Effective internal capacitance Ci ≤ 120 nF ; a cable length of 10 m is considered.
Effective internal inductance Li ≤ 200 µH ; a cable length of 10 m is considered.
Ge n e r a l The apparatus has to be operated according to the appropriate data in the data sheet
and in this instruction manual. The EC-Type Examination Certificate has to be
observed. The special conditions must be adhered to!
Ambient temperature The temperature ranges, according to temperature class, are given in the EC-Type
Examination Certificate.
Installation, commissioning 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 appro-
priate related apparatus and according to the proof of intrinsic safety.
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 protected
from knocks by the provision of an additional housing.
Germany: +49 621 776 4411Pepperl+Fuchs Group
Refer to “General Notes Relating to Pepperl+Fuchs Product Information”.
USA: +1 330 486 0001 Singapore: +65 6779 9091
www.pepperl-fuchs.com fa-info@us.pepperl-fuchs.com fa-info@sg.pepperl-fuchs.com
fa-info@de.pepperl-fuchs.com
Inductive sensor NJ5-18GK-SN
4
Release date: 2015-04-25 23:32 Date of issue: 2015-04-26 106643_eng.xml
ATEX 3G ( n L )
Note This instruction is only valid for products according to EN 60079-15:2003, valid until
31-May-2008
Instruction Manual electrical apparatus for hazardous areas
Device category 3G (nL) for use in hazardous areas with gas, vapour and mist
CE marking 0102
ATEX marking ¬ II 3G EEx nL IIC T6 X The Ex-significant identification is on the enclosed adhe-
sive label
Directive conformity 94/9/EG
Standard conformity EN 60079-15:2003 Ignition protection category "n"
Use is restricted to the following stated conditions
Effective internal capacitance Ci ≤ 120 nF ; A cable length of 10 m is considered.
Effective internal inductance Li ≤ 200 µH ; A cable length of 10 m is considered.
Ge n e r a l 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!
Installation, commissioning Laws and/or regulations and standards governing the use or intended usage goal
must be observed. The sensor must only be operated with energy-limited circuits,
which satisfy the requirements of IEC 60079-15. The explosion group depends on
the connected and energy-limited supply circuit.
The adhesive label provided must be affixed in the immediate vicinity of the sensor!
The surface to which the label is applied must be clean, flat and free from grease!
The affixed adhesive label must be readable and durable, taking account of the pos-
sibility of chemical corrosion!
Maintenance No changes can be made to apparatus, which are operated in hazardous areas.
Repairs to these apparatus are not possible.
Special conditions
Maximum permissible ambient temperature TUmax at Ui = 20 V
for Pi=34 mW, Ii=25 mA, T6 70 °C (158 °F)
for Pi=34 mW, Ii=25 mA, T5 85 °C (185 °F)
for Pi=34 mW, Ii=25 mA, T4-T1 100 °C (212 °F)
for Pi=64 mW, Ii=25 mA, T6 69 °C (156.2 °F)
for Pi=64 mW, Ii=25 mA, T5 84 °C (183.2 °F)
for Pi=64 mW, Ii=25 mA, T4-T1 100 °C (212 °F)
for Pi=169 mW, Ii=52 mA, T6 51 °C (123.8 °F)
for Pi=169 mW, Ii=52 mA, T5 66 °C (150.8 °F)
for Pi=169 mW, Ii=52 mA, T4-T1 80 °C (176 °F)
for Pi=242 mW, Ii=76 mA, T6 39 °C (102.2 °F)
for Pi=242 mW, Ii=76 mA, T5 54 °C (129.2 °F)
for Pi=242 mW, Ii=76 mA, T4-T1 61 °C (141.8 °F)
Protection from mechanical danger The sensor must not be mechanically damaged.
When used in the temperature range below -20 °C the sensor should be protected
from knocks by the provision of an additional housing.
Connection parts The connection parts are to be installed, such that a minimum protection class of
IP20 is achieved, in accordance with IEC 60529.
Germany: +49 621 776 4411Pepperl+Fuchs Group
Refer to “General Notes Relating to Pepperl+Fuchs Product Information”.
USA: +1 330 486 0001 Singapore: +65 6779 9091
www.pepperl-fuchs.com fa-info@us.pepperl-fuchs.com fa-info@sg.pepperl-fuchs.com
fa-info@de.pepperl-fuchs.com
Inductive sensor NJ5-18GK-SN
5
Release date: 2015-04-25 23:32 Date of issue: 2015-04-26 106643_eng.xml
ATEX 3G (ic )
Instruction Manual electrical apparatus for hazardous areas
Device category 3G (ic) for use in hazardous areas with gas, vapour and mist
Certificate of Compliance PF 13 CERT 2895 X
CE marking 0102
ATEX marking ¬ II 3G Ex ic IIC T6…T1 Gc
The Ex-significant identification is on the enclosed adhesive label
Directive conformity 94/9/EG
Standards EN 60079-0:2012, EN 60079-11:2012 Ignition protection category "ic"
Use is restricted to the following stated conditions
Effective internal capacitance Ci ≤ 120 nF ; A cable length of 10 m is considered.
Effective internal inductance Li ≤ 200 µH ; A cable length of 10 m is considered.
Ge n e r a l 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!
Installation, commissioning Laws and/or regulations and standards governing the use or intended usage goal
must be observed. The sensor must only be operated with energy-limited circuits,
which satisfy the requirements of IEC 60079-11. The explosion group depends on
the connected and energy-limited supply circuit.
The adhesive label provided must be affixed in the immediate vicinity of the sensor!
The surface to which the label is applied must be clean, flat and free from grease!
The affixed adhesive label must be readable and durable, taking account of the pos-
sibility of chemical corrosion!
Maintenance No changes can be made to apparatus, which are operated in hazardous areas.
Repairs to these apparatus are not possible.
Special conditions
Maximum permissible ambient temperature TUmax at Ui = 20 V
for Pi=34 mW, Ii=25 mA, T6 70 °C (158 °F)
for Pi=34 mW, Ii=25 mA, T5 85 °C (185 °F)
for Pi=34 mW, Ii=25 mA, T4-T1 100 °C (212 °F)
for Pi=64 mW, Ii=25 mA, T6 69 °C (156.2 °F)
for Pi=64 mW, Ii=25 mA, T5 84 °C (183.2 °F)
for Pi=64 mW, Ii=25 mA, T4-T1 100 °C (212 °F)
for Pi=169 mW, Ii=52 mA, T6 51 °C (123.8 °F)
for Pi=169 mW, Ii=52 mA, T5 66 °C (150.8 °F)
for Pi=169 mW, Ii=52 mA, T4-T1 80 °C (176 °F)
for Pi=242 mW, Ii=76 mA, T6 39 °C (102.2 °F)
for Pi=242 mW, Ii=76 mA, T5 54 °C (129.2 °F)
for Pi=242 mW, Ii=76 mA, T4-T1 61 °C (141.8 °F)
Protection from mechanical danger The sensor must not be mechanically damaged.
When used in the temperature range below -20 °C the sensor should be protected
from knocks by the provision of an additional housing.
Connection parts The connection parts are to be installed, such that a minimum protection class of
IP20 is achieved, in accordance with IEC 60529.
Germany: +49 621 776 4411Pepperl+Fuchs Group
Refer to “General Notes Relating to Pepperl+Fuchs Product Information”.
USA: +1 330 486 0001 Singapore: +65 6779 9091
www.pepperl-fuchs.com fa-info@us.pepperl-fuchs.com fa-info@sg.pepperl-fuchs.com
fa-info@de.pepperl-fuchs.com
Inductive sensor NJ5-18GK-SN
6
Release date: 2015-04-25 23:32 Date of issue: 2015-04-26 106643_eng.xml
ATEX 1D
Instruction Manual electrical apparatus for hazardous areas
Device category 1D for use in hazardous areas with combustible dust
EC-Type Examination Certificate ZELM 03 ATEX 0128 X
CE marking 0102
ATEX marking ¬ II 1D Ex iaD 20 T 108 °C (226.4 °F)
The Ex-significant identification is on the enclosed adhesive label
Directive conformity 94/9/EG
Standards IEC 61241-11:2002: draft; prEN61241-0:2002
type of protection intrinsic safety "iD"
Use is restricted to the following stated conditions
Appropriate type NJ 5-18GK-SN...
Effective internal capacitance Ci ≤ 120 nF ; a cable length of 10 m is considered.
Effective internal inductance Li ≤ 200 µH ; a cable length of 10 m is considered.
Ge n e r a l The apparatus has to be operated according to the appropriate data in the data sheet
and in this instruction manual.
The EC-Type Examination Certificate has to be observed.
The special conditions must be adhered to!
Maximum housing surface temperature The maximum surface temperature of the housing is given in the EC-Type Examina-
tion Certificate.
Installation, commissioning 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 appara-
tus and according to the proof of intrinsic safety.
The associated apparatus must satisfy at least the requirements of category ia IIB or
iaD. Because of the possibility of the danger of ignition, which can arise due to faults
and/or transient currents in the equipotential bonding system, galvanic isolation in
the power supply and signal circuits is preferable. Associated apparatus without
electrical isolation must only be used if the appropriate requirements of IEC 60079-
14 are met. The intrinsically safe circuit has to be protected against influences due to
lightning.
The adhesive label provided must be affixed in the immediate vicinity of the sensor!
The surface to which the label is applied must be clean, flat and free from grease!
The affixed adhesive label must be readable and durable, taking account of the pos-
sibility of chemical corrosion!
When used in the isolating wall between Zone 20 and Zone 21 or Zone 21 und Zone
22 the sensor must not be exposed to any mechanical danger and must be sealed in
such a way, that the protective function of the isolating wall is not impaired. The appli-
cable directives and standards must be observed.
Maintenance No changes can be made to apparatus, which are operated in hazardous areas.
Repairs to these apparatus are not possible.
Special conditions
Electrostatic charge The connection cables are to be laid in accordance with EN 50281-1-2 and must not
normally be subjected to chaffing during use.
