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  6. NCN3-F31K-N4-K

NCN3-F31K-N4-K Inductive sensor

Key Benefits at a Glance

  • Direct mounting on standard actuators
  • Fixed setting
  • EC-Type Examination Certificate TÜV99 ATEX 1479X
  • Usable up to SIL 2 acc. to IEC 61508
  • LEDs for switching state of sensor and solenoid valve
  • Valve LEDs disconnectable
  • ATEX & IECEX certifications

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Please contact us for exact delivery estimation.
Product photo: Inductive sensor NCN3-F31K-N4-K
Dimensions: Inductive sensor NCN3-F31K-N4-K
Product photo: Inductive sensor NCN3-F31K-N4-K
Dimensions: Inductive sensor NCN3-F31K-N4-K
Approval
Product Compliance: United Kingdom – UKCA
Product Compliance: Europe – CE
Approval
Product Compliance: USA - cULus LISTED
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 NCN3-F31K-N4-K

Switching function2 x normally closed (NC)
Output typeNAMUR
Rated operating distancesn3 mm
Installationflush mountable
Assured operating distancesa0 ... 2.4 mm
Actual operating distancesr2.7 ... 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 voltageUo8.2 V (Ri approx. 1 kΩ)
Switching frequencyf0 ... 3 kHz
HysteresisHtyp. 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 availabilitytv≤ 1.1 ms
Switching state indicatorLED, yellow
Valve status indicatorLED, yellow
Safety Integrity Level (SIL)SIL 2
MTTFd1470 a
Mission Time (TM)20 a
Diagnostic Coverage (DC)0 %
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
Standard conformity
NAMUREN 60947-5-6:2000
IEC 60947-5-6:1999
Electromagnetic compatibilityNE 21:2007
StandardsEN IEC 60947-5-2
IECEx approval
Equipment protection level GaIECEx TUN 17.0021X
Equipment protection level GbIECEx 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 Gc (ic)PF13CERT2895 X
UL approvalcULus Listed, General Purpose
Ordinary LocationE87056
Hazardous LocationE501628
Control drawing116-0456
CCC approval
Hazardous Location2020322315002262
NEPSI approval
NEPSI certificateGYJ19.1410X
Ambient temperature-25 ... 100 °C (-13 ... 212 °F)
Storage temperature-40 ... 100 °C (-40 ... 212 °F)
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)1.5/2.5 mm2 flexible/rigid
Connection (valve side)Cage tension spring terminals
Core cross section (valve side)1.5/2.5 mm2 flexible/rigid
Housing materialPBT
Sensing facePBT
Degree of protectionIP66 / IP67
Tightening torque, fastening screws≤ 5 Nm
Tightening torque, housing screws1 Nm
Tightening torque, cable glandM20 x 1.5 ; max. 7 Nm
M12 x 1.5 ; max. 1.5 Nm
Dimensions
Height35.5 mm
Width65 mm
Length77.5 mm
NoteLED switch-off
NoteInductive sensors for position feedback of standard drives with terminal identification / terminal assignment in accordance with the former DIN 45140 T1 available on request. Ask your contact person at Pepperl+Fuchs.
Use in the hazardous areasee instruction manuals
General Notes