Pepperl+Fuchs NJ1,5-18GM-N-D-V1 Inductive Proximity Sensor

USD 151.20

M18 flush NAMUR inductive sensor, 1.5mm sensing, 350 bar pressure proof, IP67 stainless steel, ceramic face, for hazardous and high-pressure applications.

SKU PEPPERL-FUCHS-NJ1,5-18GM-N-D-V1 Category
Top Brands > Pepperl+Fuchs > Inductive Proximity Sensors

Pepperl+Fuchs NJ1.5-18GM-N-D-V1 Inductive Proximity Sensor

Model Identifier NJ1.5-18GM-N-D-V1
Official Part Number NJ1,5-18GM-N-D-V1
GTIN Standard NA

Technical Overview

The Pepperl+Fuchs NJ1.5-18GM-N-D-V1 is an M18 cylindrical inductive proximity sensor designed for flush installation. It features a NAMUR output with a normally closed (NC) switching function and a 1.5 mm rated operating distance. Built with a robust stainless steel housing and a ceramic sensing face, it is compression proof up to 350 bar, making it suitable for demanding industrial environments and hazardous areas when operated with approved switch amplifiers. The sensor connects via an M12 x 1, 4-pin connector and offers an IP67 degree of protection.

Key Features

  • 1.5 mm rated operating distance
  • Flush installation
  • NAMUR output
  • Normally closed (NC) switching function
  • M18 cylindrical stainless steel housing (1.4305 / AISI 303)
  • Ceramic sensing face
  • M12 x 1, 4-pin connector
  • IP67 degree of protection
  • Usable up to SIL 2 according to IEC 61508
  • Designed for use in hazardous areas (requires appropriate switch amplifiers)

Compression proof up to 350 bar, dynamic on active surface.

Technical Specification Matrix

ParameterValue
Switching FunctionNormally closed (NC)
Output TypeNAMUR
Rated Operating Distance (sn)1.5 mm
InstallationFlush
Assured Operating Distance (sa)0 ... 1.22 mm
Nominal Voltage (Uo)8.2 V
Switching Frequency (f)0 ... 400 Hz
Current Consumption (Measuring plate not detected)min. 3 mA
Current Consumption (Measuring plate detected)≤ 1 mA
Operating Pressure350 bar (5076.4 psi)
Ambient Temperature-25 ... 85 °C
Connection TypeM12 x 1 connector, 4-pin
Housing MaterialStainless steel 1.4305 / AISI 303
Sensing Face MaterialCeramic
Degree of ProtectionIP67
Housing DiameterM18 (18 mm)

Industrial Applications

1. Hydraulic Cylinder Position Sensing in Heavy Machinery

Detecting the end-of-stroke or intermediate positions of hydraulic pistons within heavy industrial machinery (e.g., excavators, presses, injection molding machines). The sensor can be mounted flush into the cylinder body.

Problem Solved

Standard sensors fail under high hydraulic pressures and may not be suitable for hazardous environments. This sensor's 350 bar compression proof ceramic sensing face and stainless steel housing ensure reliable operation in high-pressure hydraulic fluids, while its NAMUR output makes it suitable for potentially explosive atmospheres often found around heavy machinery or in manufacturing plants. The flush mounting allows for a compact and robust integration.

Hydraulic cylindersHigh pressure (350 bar)Flush mountingPiston positionHazardous area (NAMUR)Stainless steelCeramic sensing face

2. Valve Position Feedback in Chemical Processing

Providing precise open/closed or intermediate position feedback for critical valves in chemical processing plants, particularly where corrosive media and potentially explosive atmospheres are present.

Problem Solved

Chemical environments demand sensors that can withstand corrosive substances and operate safely in classified hazardous areas. The stainless steel housing and ceramic sensing face offer excellent chemical resistance, while the 350 bar pressure rating ensures integrity even with high-pressure fluids. The NAMUR output is intrinsically safe, crucial for preventing ignition in hazardous zones, and the IP67 rating ensures protection against splashes and washdowns. The 1.5mm sensing distance allows for precise feedback on valve disc or stem position.

Chemical processingValve positionHazardous area (NAMUR)Corrosive mediaStainless steelCeramicIP67Intrinsically safe

3. Metal Object Detection in High-Pressure Washing or Sterilization Systems

Detecting the presence of small metal components or trays in high-pressure washing, sterilization, or food processing lines where hygiene and robust operation under extreme cleaning conditions are paramount.

Problem Solved

Regular sensors can be damaged by high-pressure spray, steam, or aggressive cleaning agents. This sensor's IP67 rating protects against water ingress, its stainless steel housing provides excellent resistance to cleaning chemicals and steam, and the ceramic sensing face maintains integrity under high-pressure washing cycles. The flush mounting prevents snagging and allows for easy cleaning, while the 1.5mm detection range ensures accurate sensing of small parts.

High-pressure washingSterilizationFood processingIP67Stainless steelCeramic sensing faceFlush mountingMetal detection
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