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  3. Industrial Sensors
  4. Safety for Factory Automation
  5. Safety Integrity Level 3
  6. NJ4-12GK-SN

NJ4-12GK-SN Inductive sensor

Key Benefits at a Glance

  • 4 mm non-flush
  • Usable up to SIL 3 acc. to IEC 61508
  • Degree of protection IP68
  • ATEX-/IECEx-approvals for zone 0/1/20/21 (Ex i)
  • ATEX-/IECEx-approvals for zone 2/22 (Ex ec/tc)

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Please contact us for exact delivery estimation.116,51 EUR Net price—your individual price will be shown during checkout process.
Preferred Type
Product photo: Inductive sensor NJ4-12GK-SN
Dimensions: Inductive sensor NJ4-12GK-SN
Product photo: Inductive sensor NJ4-12GK-SN
Dimensions: Inductive sensor NJ4-12GK-SN
Approval
Product Compliance: USA - cULus
Product Compliance: United Kingdom – UKCA
Approval
Product Compliance: Europe – CE
Note

All product-related documents, such as certificates, declarations of conformity, etc., which were issued prior to the conversion under the name Pepperl+Fuchs GmbH or Pepperl+Fuchs AG, also apply to Pepperl+Fuchs SE.

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DatasheetClassificationProduct DocumentationDesign / SimulationApprovalsRelated Products

Technical data of NJ4-12GK-SN

Switching functionNormally closed (NC)
Output typeNAMUR with safety function
Rated operating distancesn4 mm
Installationnon-flush
Assured operating distancesa0 ... 3.24 mm
Reduction factor rAl 0.4
Reduction factor rCu 0.3
Reduction factor r304 0.85
Safety Integrity Level (SIL)up to SIL3 acc. to IEC 61508 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 Assessment" document which is available on www.pepperl-fuchs.com as an integral part of this product's documentation.
Output type2-wire
Nominal voltageUo8.2 V (Ri approx. 1 kΩ)
Switching frequencyf0 ... 1500 Hz
Current consumption
Measuring plate not detected≥ 3 mA
Measuring plate detected≤ 1 mA
Safety Integrity Level (SIL)SIL 3
MTTFd10660 a
Mission Time (TM)20 a
Diagnostic Coverage (DC)0 %
Standard conformity
NAMUREN 60947-5-6:2000
IEC 60947-5-6:1999
StandardsEN IEC 60947-5-2
IECEx approval
Equipment protection level GaIECEx PTB 11.0092X
Equipment protection level GbIECEx PTB 11.0092X
Equipment protection level Gc (ec)IECEx TUR 21.0017X
Equipment protection level DaIECEx PTB 11.0092X
Equipment protection level Dc (tc)IECEx TUR 21.0018X
Equipment protection level MbIECEx PTB 11.0092X
ATEX approval
Equipment protection level GaPTB 00 ATEX 2049 X
Equipment protection level GbPTB 00 ATEX 2049 X
Equipment protection level Gc (ec)TÜV 20 ATEX 8523 X
Equipment protection level DaPTB 00 ATEX 2049 X
Equipment protection level Dc (tc)TÜV 20 ATEX 8524 X
UL approvalcULus Listed, General Purpose
Ordinary LocationE87056
Hazardous LocationE501628
Control drawing116-0454
CCC approval
Hazardous Location2020322315002308
2024322315005947
2024322315005860
Ambient temperature-50 ... 100 °C (-58 ... 212 °F)
Safety application: -40 ... 100°C
Connection typecable
Housing materialCrastin (PBT), black
Sensing faceCrastin (PBT), black
Degree of protectionIP68
Cable
Cable diameter4.8 mm ± 0.2 mm
Bending radius> 10 x cable diameter
Materialsilicone
Core cross section0.34 mm2
LengthL2 m
Dimensions
Length34 mm
Diameter12 mm
NoteSecurity relevant only up to -40°C
Use in the hazardous areasee instruction manuals
General Notes
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