Inductive sensor NCN3-F31K-N4

Part number: NCN3-F31K-N4

  • Direct mounting on standard actuators
  • Fixed setting
  • ATEX & IECEX certifications
  • Specification

    General specifications
    Switching function2 x normally closed (NC)
    Output typeNAMUR
    Rated operating distance3 mm
    Installationflush mountable
    Assured operating distance0 ... 2.4 mm
    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 0.5
    Reduction factor rCu 0.4
    Reduction factor r304 1
    Reduction factor rSt37 1.3
    Reduction factor rBrass 0.6
    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≤ 1.1 ms
    Switching state indicatorLED, yellow
    Functional safety related parameters
    Safety Integrity Level (SIL)SIL 2
    MTTFd1470 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
    Electromagnetic compatibilityNE 21:2007
    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
    IECEx approval
    Equipment protection level GaIECEx TUN 17.0021X
    Equipment protection level GbIECEx TUN 17.0021X
    Equipment protection level DaIECEx TUN 17.0021X
    Equipment protection level MbIECEx TUN 17.0021X
    ATEX approval
    Equipment protection level GaTÜV 99 ATEX 1479 X
    Equipment protection level GbTÜV 99 ATEX 1479 X
    Equipment protection level DaTÜV 99 ATEX 1479 X
    UL approvalcULus Listed, General Purpose
    Ordinary LocationE87056
    Hazardous LocationE501628
    Control drawing116-0456
    CCC approval
    Hazardous Location2020322315002262
    NEPSI approval
    NEPSI certificateGYJ19.1410X
    Ambient conditions
    Ambient temperature-25 ... 100 °C (-13 ... 212 °F)
    Storage temperature-40 ... 100 °C (-40 ... 212 °F)
    Mechanical specifications
    Connection (system side)Cage tension spring terminals
    Stripped length 7 mm
    M20 x 1.5 cable gland
    usable thread length 11.5 mm
    screw-in depth max. 11.5 mm
    Core cross section (system side)Flexible: 0.2 ... 1.5 mm2
    rigid: 0.2 ... 2.5 mm2
    Housing materialPBT
    Sensing facePBT
    Degree of protectionIP67
    Tightening torque, housing screws1 Nm
    Tightening torque, cable glandM20 x 1.5 ; max. 7 Nm
    General information
    Use in the hazardous areasee instruction manuals
    ECLASS 13.027274101
    ECLASS 12.027274101
    ECLASS 11.027272401
    ECLASS 10.0.127272401
    ECLASS 9.027272401
    ECLASS 8.027272401
    ECLASS 5.127272401
    ETIM 9.0EC002714
    ETIM 8.0EC002714
    ETIM 7.0EC002714
    ETIM 6.0EC002714
    ETIM 5.0EC002714
    UNSPSC 12.139121550