Pepperl+Fuchs NJ1,5-8GM-N Inductive Proximity Sensor

USD 48.24

M8 inductive proximity sensor, 1.5mm flush, NAMUR NC output. Stainless steel housing, IP67. SIL 2 rated for hazardous areas. -25 to 100°C.

SKU PEPPERL-FUCHS-NJ1,5-8GM-N Category
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Pepperl+Fuchs NJ1,5-8GM-N Inductive Proximity Sensor

Model Identifier NJ1,5-8GM-N
Official Part Number NJ1,5-8GM-N
GTIN Standard NA

Technical Overview

The Pepperl+Fuchs NJ1,5-8GM-N is an M8 cylindrical inductive proximity sensor designed for reliable object detection in industrial environments. It features a 1.5 mm flush sensing distance, NAMUR (Normally Closed) output, and a robust stainless steel housing. This sensor is certified for use in safety-related applications up to SIL 2 according to IEC 61508 and offers a wide operating temperature range from -25 to 100 °C. Its IP66/IP67 protection rating ensures durability in harsh conditions.

Key Features

  • 1.5 mm flush installation for precise object detection
  • NAMUR (Normally Closed) output for intrinsically safe applications
  • Robust stainless steel 1.4305 / AISI 303 housing
  • Wide ambient temperature range of -25 ... 100 °C (-13 ... 212 °F)
  • High protection degree of IP66 / IP67 for demanding environments
  • Cylindrical M8 threaded design for easy mounting
  • 2-wire connection with 2 m PVC cable

Usable up to SIL 2 acc. to IEC 61508, ensuring high safety integrity in critical applications.

Technical Specification Matrix

ParameterValue
Switching functionNormally closed (NC)
Output typeNAMUR
Rated operating distance (sn)1.5 mm
Installationflush
Nominal voltage (Uo)8.2 V (Ri approx. 1 kΩ)
Switching frequency (f)0 ... 5000 Hz
Hysteresis (H)1 ... 10 % typ. 5 %
Current consumption (measuring plate not detected)≥ 3 mA
Current consumption (measuring plate detected)≤ 1 mA
Ambient temperature-25 ... 100 °C
Connection typecable PVC, 2 m
Core cross-section0.14 mm²
Housing materialStainless steel 1.4305 / AISI 303
Sensing facePBT
Protection degreeIP66 / IP67
Safety Integrity Level (SIL)SIL 2 acc. to IEC 61508
DiameterM8 (8 mm)

Industrial Applications

1. Position detection in harsh chemical processing environments

This sensor reliably detects the precise position of metallic components like valve actuators or conveyor parts in areas exposed to corrosive chemicals or frequent washdowns. Its stainless steel housing (1.4305/AISI 303) and high IP66/IP67 rating ensure long-term operation where standard sensors would fail.

Problem Solved

Ensures accurate position feedback and prevents sensor corrosion or failure in aggressive chemical environments and areas requiring frequent cleaning, extending operational lifespan and reducing maintenance.

Corrosive environmentsWashdownPosition sensingStainless steelIP67Chemical resistance

2. Safety-related limit switching in intrinsically safe areas (Ex zones)

Used as a safety limit switch for machinery or equipment in hazardous areas (e.g., Zone 1 or Zone 2) where explosive gases or dusts may be present. It provides critical position monitoring to ensure safe operation and prevent dangerous conditions like overtravel.

Problem Solved

Offers reliable, intrinsically safe position monitoring for safety functions, meeting SIL 2 requirements. Its NAMUR output is compatible with certified intrinsically safe barriers, preventing ignition risks in explosive atmospheres.

Intrinsic safetyHazardous areasSIL 2NAMURLimit switchExplosion protection

3. High-temperature object detection in industrial furnaces or drying processes

Detecting the presence or absence of metallic objects moving through high-temperature zones, such as parts in a heat treatment furnace or components within a drying oven. The sensor's robust design allows it to function effectively where temperatures are elevated.

Problem Solved

Provides accurate and consistent object detection in environments with temperatures up to 100 °C, enabling precise process control feedback without the risk of sensor malfunction or premature failure due to heat.

High temperatureObject detectionIndustrial ovensHeat treatmentProcess control100 °C
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