Pepperl+Fuchs NJ3-18GK-S1N

Overview

The Pepperl+Fuchs NJ3-18GK-S1N is an advanced M18 inductive proximity sensor engineered for exceptional performance in detecting non-ferrous metal targets. With a precise 3 mm sensing range, this sensor guarantees reliable operation across diverse industrial landscapes, including intrinsically safe circuits within hazardous environments. Its robust construction, adherence to stringent safety standards, and suitability for applications up to SIL 3 according to IEC 61508, establish it as an indispensable component for critical automation tasks where safety and accuracy are paramount.

Key Features

• Optimized for Non-Ferrous Metals: Engineered for accurate and reliable detection of non-ferrous materials, making it ideal for specialized applications.
• Precise 3 mm Sensing Range: Delivers consistent detection with flush installation in mild steel (ST37/1.0037).
• NAMUR Output: Features a normally open (NO) switching function, ensuring compatibility with standard intrinsically safe control circuits.
• SIL 3 Certified: Suitable for safety-critical applications requiring Safety Integrity Level 3 compliance as per IEC 61508 standards.
• Hazardous Area Approvals: ATEX and IECEx certified for use in Zone 0/1/20/21 (Ex i) and Zone 2/22 (Ex ec/tc) locations, ensuring safety in explosive atmospheres.
• IP68 Environmental Protection: Highly durable housing provides superior resistance against dust and water ingress, ideal for demanding industrial conditions.
• Wide Operating Temperature Range: Maintains optimal performance in ambient temperatures from -25°C to 100°C (-13°F to 212°F).
• Compact M18 Design: A streamlined M18 threaded cylindrical housing with a length of 39 mm allows for easy integration into existing systems and confined spaces.
• Flexible Connection: Comes equipped with a durable 2-meter silicone cable for versatile and secure installation.

Technical Specifications

• Model Number: NJ3-18GK-S1N
• Switching Function: Normally open (NO)
• Output Type: NAMUR with safety function
• Rated Operating Distance (sn): 3 mm
• Assured Operating Distance (sa): 0 to 2.4 mm
• Actual Operating Distance (sr): Typically 2.7 to 3.3 mm
• Reduction Factors:
  • Aluminum (rAl): 1
  • Copper (rCu): 1
  • Stainless Steel 304 (r304): 0
• Nominal Voltage (Uo): 8.2 V (Ri approximately 1 kΩ)
• Switching Frequency (f): 0 to 200 Hz
• Current Consumption:
  • Target Not Detected: ≤ 1 mA
  • Target Detected: ≥ 3 mA
• Housing Material: Crastin (PBT), black
• Sensing Face Material: Crastin (PBT), black
• Degree of Protection: IP68
• Cable Specifications:
  • Diameter: 6.8 mm ± 0.2 mm
  • Material: Silicone
  • Core Cross Section: 0.75 mm²
  • Length: 2 meters
• Dimensions:
  • Length: 39 mm
  • Diameter: 18 mm
• Certifications:
  • IECEx Approvals: Equipment protection levels Ga, Gb, Gc (ec), Da, Dc (tc), Mb
  • ATEX Approvals: Equipment protection levels Ga, Gb, Gc (ec), Da, Dc (tc)
  • UL Approval: cULus Listed for General Purpose and Hazardous Locations
  • CCC Approval: Certified for hazardous locations

Applications

The Pepperl+Fuchs NJ3-18GK-S1N inductive sensor is highly versatile and proven across a range of demanding industries:

• Chemical Processing: Ensures reliable and safe detection of non-ferrous metal components in corrosive and hazardous chemical environments.
• Oil and Gas Industry: Crucial for accurate object detection in explosive atmospheres, enhancing safety and operational efficiency in drilling, refining, and transportation applications.
• Pharmaceutical Manufacturing: Provides precise and hygienic detection in cleanroom environments where non-ferrous materials are commonly utilized.
• Food and Beverage: Ideal for applications requiring robust and washdown-resistant sensors for non-ferrous metal detection in processing and packaging lines.
• Mining: Offers durable and dependable performance in harsh mining conditions, suitable for detecting the presence of non-ferrous components in machinery.

Why Choose This Model?

The Pepperl+Fuchs NJ3-18GK-S1N stands out as an exceptional choice for anyone seeking a high-performance inductive sensor with unparalleled safety features. Its specific optimization for non-ferrous metals, combined with a precise 3 mm sensing distance, ensures accuracy in specialized applications where other sensors might fail. The NAMUR output and comprehensive hazardous area certifications (ATEX, IECEx, UL, CCC) make it perfectly suited for operation in the most challenging and potentially explosive environments, providing peace of mind and compliance with international safety standards. Furthermore, its SIL 3 suitability underscores its reliability in critical safety loops, making it a cornerstone for system integrity. With an IP68 rating and wide temperature range, this sensor is built to last, offering excellent resistance to environmental stressors and prolonged operational life. Choosing the NJ3-18GK-S1N means investing in a sensor that delivers precision, safety, and durability, ultimately optimizing your automation processes.

Order Now

Enhance your industrial automation and safety systems with the Pepperl+Fuchs NJ3-18GK-S1N M18 Inductive Sensor. Contact us today to place your order or to speak with a specialist about integrating this cutting-edge solution into your specific application.