Pepperl+FuchsProximity SensorsInductive Sensors
Inductive sensor NCN3-F31K2M-N4-B23-S

Part number: NCN3-F31K2M-N4-B23-S

  • Direct mounting on standard actuators
  • ATEX and IECEx approval
  • Usable up to SIL 2 acc. to IEC 61508
  • Weatherproof housing for outdoor applications
  • Rugged metal base
  • 1/2" NPT conduit entrance
  • Plug-in terminals
  • Temperature range
    -40 ... 100 °C (-40 ... 212 °F)
    • Datasheet NCN3-F31K2M-N4-B23-S

    Specification

    General specifications
    Switching function2 x normally closed (NC)
    Output typeNAMUR
    Rated operating distance3 mm
    Installationflush mountable
    Assured operating distance0 ... 2.4 mm
    For assured operating distance sar see Manual Functional Safety.
    Actual operating distance2.7 ... 3.3 mm typ.
    Actuating elementStainless steel 1.4305 / AISI 303
    8.5 mm x 8.5 mm x 0.5 mm
    Reduction factor rAl 0.4
    Reduction factor rCu 0.4
    Reduction factor r304 0.7
    Reduction factor rSt37 1
    Reduction factor rBrass 0.5
    Output type2-wire
    Nominal ratings
    Nominal voltage8.2 V (Ri approx. 1 kΩ)
    Switching frequency0 ... 3 kHz
    Hysteresistyp. 5 %
    Reverse polarity protectionreverse polarity protected
    Short-circuit protectionyes
    Suitable for 2:1 technologyyes , Reverse polarity protection diode not required
    Current consumption
    Measuring plate not detected≥ 3 mA
    Measuring plate detected≤ 1 mA
    Time delay before availability≤ 1 ms
    Functional safety related parameters
    Safety Integrity Level (SIL)SIL 2
    MTTFd1730 a
    Mission Time (TM)20 a
    Diagnostic Coverage (DC)0 %
    Valve circuit
    Voltagemax. 32 V DC
    Currentmax. 240 mA
    Short-circuit protectionno
    Reverse polarity protectionyes, with reversed output LED is out of function, therfore more power for solenoid valve
    Compliance with standards and directives
    Standard conformity
    NAMUREN 60947-5-6:2000
    IEC 60947-5-6:1999
    Electromagnetic compatibilityNE 21:2007
    StandardsEN IEC 60947-5-2:2020
    IEC 60947-5-2:2019
    Approvals and certificates
    IECEx approval
    Equipment protection level GaIECEx TUR 17.0055X
    Equipment protection level GbIECEx TUR 17.0055X
    Equipment protection level GcIECEx TUR 20.0062X
    Equipment protection level DaIECEx TUR 17.0055X
    Equipment protection level DcIECEx TUR 20.0068X
    ATEX approval
    Equipment protection level GaTÜV 17 ATEX 8125 X
    Equipment protection level GbTÜV 17 ATEX 8125 X
    Equipment protection level GcTÜV 20 ATEX 8592 X
    Equipment protection level DaTÜV 17 ATEX 8125 X
    Equipment protection level DcTÜV 20 ATEX 8598 X
    UL approvalcULus Listed, General Purpose, Class 2 Power Source
    Ordinary LocationE87056
    Hazardous LocationE501628
    Control drawing116-0455
    CCC approval
    Hazardous Location2020322315002305
    NEPSI approval
    NEPSI certificateGYJ18.1172X
    Ambient conditions
    Ambient temperature-40 ... 100 °C (-40 ... 212 °F)
    Storage temperature-40 ... 100 °C (-40 ... 212 °F)
    Mechanical specifications
    Connection typescrew terminals
    Connection (system side)Screw terminals, tightening torque min. 0.5 Nm
    Stripped length 7 mm , 1/2" NPT cable gland , usable thread length 13.5 mm , screw-in depth max. 13.5 mm
    Core cross section (system side)rigid: 0.14 ... 2.5 mm2
    flexible: 0.14 ... 1.5 mm2
    flexible with core-end sleeve: 0.25 ... 1.5 mm2
    Connection (valve side)like connection (system side)
    Core cross section (valve side)like core cross section (system side)
    Housing materialPC (glass-fiber-reinforced Makrolon)
    Housing basepowder coated aluminum
    Degree of protectionIP66 / IP68 / IP69
    Tightening torque, fastening screws4 Nm ... 5 Nm
    Tightening torque, housing screws1.5 Nm
    Tightening torque of cover srews1.5 Nm
    Tightening torque, earthing screw1.5 Nm
    Tightening torque, cable glandRefer to NEC (National Electrical Code), hand-tight then wrench tightened (max. 3 turns)
    Tightening torque, stopping plug2 Nm
    General information
    Use in the hazardous areasee instruction manuals
    ECLASS 13.027220501
    ECLASS 12.027220501
    ECLASS 11.027220501
    ECLASS 10.0.127220501
    ECLASS 9.027220501
    ECLASS 8.027220501
    ECLASS 5.127220501
    ETIM 9.0EC002714
    ETIM 8.0EC002714
    ETIM 7.0EC002714
    ETIM 6.0EC002714
    ETIM 5.0EC002714
    UNSPSC 12.139121550