Inductive sensor NJ4-12GM-N Technical Data General specifications Switching element function NAMUR, NC Rated operating distance s 4 mm n Installation non-flush Output polarity NAMUR Assured operating distance s 0 ... 3.24 mm a Reduction factor r 0.4 Al Reduction factor r 0.3 Cu Reduction factor r 0.85 304 Nominal ratings Nominal voltage U 8.2 V (R approx. 1 kΩ) o i Switching frequency f 0 ... 1500 Hz Hysteresis H3 % Current consumption ≥ 3 mA Measuring plate not detected ≤ 1 mA Measuring plate detected Functional safety related parameters MTTF 11774 a d Mission Time (T) 20 a M 0102 Diagnostic Coverage (DC) 0 % Ambient conditions Ambient temperature -25 ... 100 °C (-13 ... 212 °F) Mechanical specifications Connection type cable PVC , 2 m 2 Model Number Core cross-section 0.34 mm Housing material Stainless steel 1.4305 / AISI 303 Sensing face PBT NJ4-12GM-N Degree of protection IP67 General information Features Scope of delivery 2 self locking nuts in scope of delivery Use in the hazardous area see instruction manuals • 4 mm non-flush Category 1G; 2G; 1D • Usable up to SIL2 acc. to IEC 61508 Compliance with standards and directives Standard conformity Accessories NAMUR EN 60947-5-6:2000 IEC 60947-5-6:1999 BF 12 Mounting flange, 12 mm 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 M12 x 1 17 Electrical Connection BN L+ BU L- Refer to “General Notes Relating to Pepperl+Fuchs Product Information”. Pepperl+Fuchs Group USA: +1 330 486 0001 Germany: +49 621 776 4411 Singapore: +65 6779 9091 1 www.pepperl-fuchs.com fa-info@us.pepperl-fuchs.com fa-info@de.pepperl-fuchs.com fa-info@sg.pepperl-fuchs.com Release date: 2015-04-25 23:21 Date of issue: 2015-04-26 106422_eng.xml 4 5 33 Inductive sensor NJ4-12GM-N 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 2048 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 4-12GM-N... Effective internal capacitance C ≤ 45 nF ; a cable length of 10 m is considered. i Effective internal inductance L ≤ 50 µH ; a cable length of 10 m is considered. i General 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! Directive 94/9/EG 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 surfaces by the mentioned certification authority. If the equipment is not used under atmospheric conditions, a reduction of the permis- sible minimum ignition energies may have to be taken into consideration. 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 charges on the metal housing components must be avoided. Danger- Electrostatic charge ous electrostatic charges on the metal housing components can be avoided by incor- porating these components in the equipotential bonding. Refer to “General Notes Relating to Pepperl+Fuchs Product Information”. Pepperl+Fuchs Group USA: +1 330 486 0001 Germany: +49 621 776 4411 Singapore: +65 6779 9091 2 www.pepperl-fuchs.com fa-info@us.pepperl-fuchs.com fa-info@de.pepperl-fuchs.com fa-info@sg.pepperl-fuchs.com Release date: 2015-04-25 23:21 Date of issue: 2015-04-26 106422_eng.xml Inductive sensor NJ4-12GM-N 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 2048 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 4-12GM-N... Effective internal capacitance C ≤ 45 nF ; a cable length of 10 m is considered. i Effective internal inductance L ≤ 50 µH ; a cable length of 10 m is considered. i General 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! Directive 94/9/EG 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 surfaces by the mentioned certification authority. If the equipment is not used under atmospheric conditions, a reduction of the permis- sible minimum ignition energies may have to be taken into consideration. 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 When used in the temperature range below -20 °C the sensor should be protected Protection from mechanical danger from knocks by the provision of an additional housing. Electrostatic charge 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. Refer to “General Notes Relating to Pepperl+Fuchs Product Information”. Pepperl+Fuchs Group USA: +1 330 486 0001 Germany: +49 621 776 4411 Singapore: +65 6779 9091 3 www.pepperl-fuchs.com fa-info@us.pepperl-fuchs.com fa-info@de.pepperl-fuchs.com fa-info@sg.pepperl-fuchs.com Release date: 2015-04-25 23:21 Date of issue: 2015-04-26 106422_eng.xml Inductive sensor NJ4-12GM-N 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-relevant identification may also be printed on the accompanying 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 4-12GM-N... Effective internal capacitance C ≤ 45 nF ; a cable length of 10 m is considered. i Effective internal inductance L ≤ 50 µH ; a cable length of 10 m is considered. i General 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. 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. If the Ex-relevant identification is exclusively printed on the included adhesive label, this must be applied in the direct vicinity of the sensor! The surface to which the label is to applied must be clean and free from grease! The applied adhesive label must be durable adlegible to protect it against 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. Special conditions Electrostatic charges must be avoided on the mechanical housing components. Electrostatic charge Dangerous electrostatic charges on the mechanical housing components can be avoided by incorporating these in the equipotential bonding. The connection cables are to be laid in accordance with EN 50281-1-2 and must not normally be subjected to chaffing during use. Refer to “General Notes Relating to Pepperl+Fuchs Product Information”. Pepperl+Fuchs Group USA: +1 330 486 0001 Germany: +49 621 776 4411 Singapore: +65 6779 9091 4 www.pepperl-fuchs.com fa-info@us.pepperl-fuchs.com fa-info@de.pepperl-fuchs.com fa-info@sg.pepperl-fuchs.com Release date: 2015-04-25 23:21 Date of issue: 2015-04-26 106422_eng.xml