Serviceline Industrial Sensors
Serviceline Explosion Protection

Inductive sensor NJ4-12GK-N

NJ4-12GK-N
  • 4 mm non-flush
  • Usable up to SIL 2 acc. to IEC 61508


NAMUR sensors must be operated with approved switch amplifiers. Please find suitable devices below:

Please 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, also apply to Pepperl+Fuchs AG.

Download the complete datasheet as a PDF:


Datasheet excerpt: Technical data of  NJ4-12GK-N

General specifications
Switching functionNormally closed (NC)
Output typeNAMUR
Rated operating distance4 mm
Installationnon-flush
Assured operating distance0 ... 3.24 mm
Reduction factor rAl 0.4
Reduction factor rCu 0.3
Reduction factor r304 0.85
Output type2-wire
Nominal ratings
Nominal voltage8.2 V (Ri approx. 1 kΩ)
Switching frequency0 ... 1500 Hz
Current consumption
Measuring plate not detectedmin. 3 mA
Measuring plate detected≤ 1 mA
Functional safety related parameters
Safety Integrity Level (SIL)SIL 2
MTTFd11774 a
Mission Time (TM)20 a
Diagnostic Coverage (DC)0 %
Compliance with standards and directives
Standard conformity
NAMUREN 60947-5-6:2000
IEC 60947-5-6:1999
StandardsEN 60947-5-2:2007
EN 60947-5-2/A1:2012
IEC 60947-5-2:2007
IEC 60947-5-2 AMD 1:2012
Approvals and certificates
EAC conformityTR CU 012/2011
FM approval
Control drawing116-0165
UL approvalcULus Listed, General Purpose
CSA approvalcCSAus Listed, General Purpose
CCC approvalCCC approval / marking not required for products rated ≤36 V
Ambient conditions
Ambient temperature-25 ... 100 °C (-13 ... 212 °F)
Mechanical specifications
Connection typecable PVC , 2 m
Core cross-section0.34 mm2
Housing materialPBT
Sensing facePBT
Degree of protectionIP66 / IP68
Cable
Cable diameter4.8 mm ± 0.2 mm
Bending radius> 10 x cable diameter
Data for application in connection with hazardous areas
Equipment protection levelGb , Da , Mb
Equipment protection level Gb
Type of protectionintrinsic safety
CE marking[*PD-Z02585A*]
Certificates
Appropriate typeNJ4-12GK-N...
ATEX certificatePTB 00 ATEX 2048 X
ATEX markingEx-Hexagon II 2G Ex ia IIC T6…T1 Gb
StandardsEN 60079-0:2012+A11:2013 , EN 60079-11:2012
IECEx certificateIECEx PTB 11.0037X
IECEx markingEx ia IIC T6 Ga
StandardsIEC 60079-0:2004 , IEC 60079-11:2006
Effective internal capacitancemax. 45 nF
A cable length of 10 m is considered.
Effective internal inductancemax. 50 µH
A cable length of 10 m is considered.
Maximum permissible ambient temperatureAlso observe the maximum permissible ambient temperature stated in the general technical data.
Keep to the lower of the two values.
at Ui = 16 V , Ii = 25 mA , Pi = 34 mW ,
T6 : 73 °C (163.4 °F)
T5 : 88 °C (190.4 °F)
T4 : 100 °C (212 °F)
T3 : 100 °C (212 °F)
T2 : 100 °C (212 °F)
T1 : 100 °C (212 °F)
at Ui = 16 V , Ii = 25 mA , Pi = 64 mW ,
T6 : 69 °C (156.2 °F)
T5 : 84 °C (183.2 °F)
T4 : 100 °C (212 °F)
T3 : 100 °C (212 °F)
T2 : 100 °C (212 °F)
T1 : 100 °C (212 °F)
at Ui = 16 V , Ii = 52 mA , Pi = 169 mW ,
T6 : 51 °C (123.8 °F)
T5 : 66 °C (150.8 °F)
T4 : 80 °C (176 °F)
T3 : 80 °C (176 °F)
T2 : 80 °C (176 °F)
T1 : 80 °C (176 °F)
at Ui = 16 V , Ii = 76 mA , Pi = 242 mW ,
T6 : 39 °C (102.2 °F)
T5 : 54 °C (129.2 °F)
T4 : 61 °C (141.8 °F)
T3 : 61 °C (141.8 °F)
T2 : 61 °C (141.8 °F)
T1 : 61 °C (141.8 °F)
Equipment protection level Da
Type of protectionintrinsic safety
CE marking[*PD-Z02585A*]
Certificates
Appropriate typeNJ4-12GK-N...
ATEX certificatePTB 00 ATEX 2048 X
ATEX markingEx-Hexagon II 1D Ex ia IIIC T135°C Da
StandardsEN 60079-0:2012+A11:2013 , EN 60079-11:2012
Effective internal capacitancemax. 45 nF
A cable length of 10 m is considered.
Effective internal inductancemax. 50 µH
A cable length of 10 m is considered.
Maximum permissible ambient temperatureAlso observe the maximum permissible ambient temperature stated in the general technical data.
Keep to the lower of the two values.
at Ui = 16 V , Ii = 25 mA , Pi = 34 mW : 100 °C (212 °F)
at Ui = 16 V , Ii = 25 mA , Pi = 64 mW : 100 °C (212 °F)
at Ui = 16 V , Ii = 52 mA , Pi = 169 mW : 80 °C (176 °F)
at Ui = 16 V , Ii = 76 mA , Pi = 242 mW : 61 °C (141.8 °F)
Equipment protection level Mb
Type of protectionintrinsic safety
Certificates
Appropriate typeNJ4-12GK-N...
IECEx certificateIECEx PTB 11.0037X
IECEx markingEx ia I
StandardsIEC 60079-0:2004 , IEC 60079-11:2006
Effective internal capacitancemax. 45 nF
A cable length of 10 m is considered.
Effective internal inductancemax. 50 µH
A cable length of 10 m is considered.
Maximum permissible ambient temperatureAlso observe the maximum permissible ambient temperature stated in the general technical data.
Keep to the lower of the two values.
at Ui = 16 V , Ii = 25 mA , Pi = 34 mW : 100 °C (212 °F)
at Ui = 16 V , Ii = 25 mA , Pi = 64 mW : 100 °C (212 °F)
at Ui = 16 V , Ii = 52 mA , Pi = 169 mW : 80 °C (176 °F)
at Ui = 16 V , Ii = 76 mA , Pi = 242 mW : 61 °C (141.8 °F)
General information
Use in the hazardous areasee instruction manuals

Documents: NJ4-12GK-N

Instruction manualsLanguageFile TypeFile Size
ИнструкцииBULPDF138 KB
Návod k poużitíCZEPDF131 KB
Instruktions manualDANPDF130 KB
Instruction manualENGPDF137 KB
KasutusjuhendESTPDF126 KB
KäyttöohjeFINPDF127 KB
Manuel d'instructionsFRAPDF135 KB
BetriebsanleitungGERPDF137 KB
Οδηγίες χρήσηςGREPDF140 KB
HandleidingHOLPDF131 KB
Instruction manual / BetriebsanleitungHRVPDF130 KB
Használati útmutatóHUNPDF134 KB
Manuale di istruzioniITAPDF131 KB
Lietošanas pamācībaLAVPDF130 KB
Instrukciju vadovasLITPDF132 KB
Instrukcja obsługiPOLPDF134 KB
Manual de instruçõesPORPDF133 KB
Manual de utilizareRONPDF133 KB
Návod na poużitieSLKPDF133 KB
Navodila za uporaboSLVPDF130 KB
Manual de instruccionesSPAPDF133 KB
ManualSWEPDF129 KB
Technical information
Installation conditionsENGPDF191 KB
EinbaubedingungenGERPDF194 KB
warunki montażuPOLPDF245 KB
Условия монтажаRUSPDF274 KB

Approvals+Certificates: NJ4-12GK-N

Statements of complianceCertificate No.File TypeFile Size
EU-Declaration of conformity / EU-KonformitätserklärungDOC-0369CPDF347 KB
Certificates
Canada USA CSA Ordinary Location1007121PDF99 KB
Canada USA UL Ordinary Location20170306-E87056PDF407 KB
EU PTB ATEX ia 2G, 1G, 1D s. certificatePTB 00 ATEX 2048 XPDF29071 KB
Pepperl+Fuchs Declaration of Conformity Functional SafetyPF13CERT1624BPDF2003 KB
Russia NANIO "CCVE"TC RU C-DE.AA87.B.00394PDF3971 KB
Worldwide PTB IECEx iaIECEx PTB 11.0037XLINK---
Control drawings
Control Drawing FM / Control Drawing FM   PDF686 KB

Associated Products: NJ4-12GK-N

Accessories

Mounting flange, 12 mmfa