Pepperl+Fuchs NJ2-11-N Inductive Proximity Sensor

USD 67.68

NAMUR 2-wire inductive sensor with 2 mm flush sensing, 8.2 V nominal voltage, and IP68 stainless steel housing for SIL 2 applications.

SKU PEPPERL-FUCHS-NJ2-11-N Category
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Pepperl+Fuchs NJ2-11-N Inductive Proximity Sensor

Model Identifier NJ2-11-N
Official Part Number NJ2-11-N
GTIN Standard NA

Technical Overview

NAMUR 2-wire inductive sensor with 2 mm flush sensing, 8.2 V nominal voltage, and IP68 stainless steel housing for SIL 2 applications.

Key Features

  • 2 mm rated operating distance (flush installation).
  • NAMUR output type, 2-wire for intrinsically safe circuits.
  • Nominal operating voltage of 8.2 V (Ri approx. 1 kΩ).
  • Wide ambient temperature range from -25 °C to 100 °C.
  • High degree of protection, IP68.
  • Housing material: Stainless steel 1.4305 / AISI 303; Sensing face: PVDF.
  • High switching frequency up to 3000 Hz.
  • Normally Closed (NC) switching function.

Usable up to SIL 2 according to IEC 61508, ensuring high functional safety in critical process and machine applications.

Technical Specification Matrix

ParameterValue
Switching FunctionNormally closed (NC)
Output TypeNAMUR, 2-wire
Rated Operating Distance (sn)2 mm
InstallationFlush
Nominal Voltage (Uo)8.2 V (Ri approx. 1 kΩ)
Switching Frequency (f)0 ... 3000 Hz
Hysteresis (H)0.5 ... 3.5 typ. 2 %
Current Consumption (Measuring plate not detected)min. 3 mA (or ≥ 3 mA)
Current Consumption (Measuring plate detected)≤ 1 mA
Safety Integrity Level (SIL)SIL 2 acc. to IEC 61508
Ambient Temperature-25 ... 100 °C (-13 ... 212 °F)
Housing MaterialStainless steel 1.4305 / AISI 303
Sensing Face MaterialPVDF
Degree of ProtectionIP68
Dimensions (Diameter)ø11 mm
Dimensions (Length)30 mm
Physical Weight (kg)0
Dimensions L x W x H (cm)3 x 1.1 x 1.1

Industrial Applications

1. Intrinsically Safe Level/Position Detection in Chemical Processing

This sensor can precisely detect the presence or position of internal components, such as float switches or valve actuators, within tanks containing hazardous chemicals. Its NAMUR output ensures intrinsic safety, making it suitable for Zone 0/20 hazardous areas. The stainless steel housing and PVDF sensing face offer excellent resistance to corrosive media, while the IP68 rating protects against splashes and submersion. The SIL 2 compliance adds a layer of safety for critical level monitoring.

Problem Solved

Safely and reliably detects the presence or position of metallic objects in highly corrosive and potentially explosive chemical environments, preventing spills or improper valve operation.

NAMURIntrinsic SafetyHazardous AreaSIL 2IP68Chemical ResistanceLevel DetectionValve Position Monitoring

2. High-Speed Small Part Detection on Packaging Machinery

The 2 mm flush sensing distance and high switching frequency (up to 3000 Hz) make this sensor ideal for detecting small metallic components or package elements moving rapidly on a conveyor belt or within packaging machinery. Its compact ø11x30mm size allows for integration into tight spaces, and the IP68 rating ensures it can withstand dust and washdowns common in packaging plants. The robust construction provides durability against potential impacts.

Problem Solved

Accurately and quickly detects small, fast-moving metallic objects in automated packaging processes, preventing jams, ensuring correct product assembly, or verifying package contents.

High-Speed DetectionSmall Object SensingFlush InstallationPackaging AutomationIP68Machine ControlSwitching Frequency

3. Robust Tool Breakage Monitoring in CNC Machining Centers

Mounted flush within a CNC machine, this inductive sensor can reliably detect the presence of a metal cutting tool. Its small sensing distance of 2 mm allows for precise monitoring of tool integrity. If a tool breaks, the absence of the metal object is immediately detected, stopping the machine and preventing damage to the workpiece or machine. The robust stainless steel housing and IP68 rating protect against coolant, metal chips, and harsh vibrations in the machining environment, and the wide operating temperature handles thermal fluctuations.

Problem Solved

Prevents costly damage to workpieces and machinery by instantly detecting broken metal cutting tools in harsh CNC machining environments.

Tool MonitoringCNC MachiningMetal DetectionIP68RobustnessHigh TemperatureFlush Mounting
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