Pepperl+Fuchs SJ5-K-N Inductive NAMUR Slot Sensor

USD 59.04

5mm slot, NAMUR NC, 5-25V operating voltage, IP67 PBT housing. Ideal for precise object detection in hazardous or demanding industrial environments.

SKU PEPPERL-FUCHS-SJ5-K-N Category
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Pepperl+Fuchs SJ5-K-N Inductive NAMUR Slot Sensor

Model Identifier SJ5-K-N
Official Part Number SJ5-K-N
GTIN Standard 4050143454280

Technical Overview

5mm slot, NAMUR NC, 5-25V operating voltage, IP67 PBT housing. Ideal for precise object detection in hazardous or demanding industrial environments.

Key Features

  • Inductive slot sensor technology for reliable detection
  • 5 mm slot width ensures precise object detection
  • Normally Closed (NC) switching function
  • NAMUR 2-wire output for intrinsically safe circuits
  • Wide operating voltage range from 5 V to 25 V
  • High switching frequency up to 2000 Hz for fast applications
  • Robust PBT housing material for durability
  • IP67 degree of protection against dust and water immersion
  • Extended ambient operating temperature range: -25°C to 100°C (-13°F to 212°F)
  • Pre-cabled with a 2-meter PVC cable for easy connection
  • Multiple international approvals including cULus, FM, CSA, CCC, IECEx

NAMUR output for intrinsically safe applications in hazardous areas.

Technical Specification Matrix

ParameterValue
Sensor TypeInductive Slot Sensor
Slot Width5 mm
Switching FunctionNormally Closed (NC)
Output TypeNAMUR, 2-wire
Nominal Voltage (Uo)8.2 V (Ri approx. 1 kΩ)
Operating Voltage (UB)5 ... 25 V
Switching Frequency (f)0 ... 2000 Hz
Hysteresis (H)0.05 ... 0.3 mm
Current Consumption (Measuring plate not detected)≥ 3 mA at nominal voltage
Current Consumption (Measuring plate detected)≤ 1 mA at nominal voltage
Ambient Temperature-25 ... 100°C (-13 ... 212°F)
Connection TypeCable PVC, 2 m
Core Cross-section0.75 mm²
Housing MaterialPBT
Degree of ProtectionIP67
ApprovalsFM, UL (cULus Listed), CSA, CCC, IECEx
Physical Weight (kg)0.13
Dimensions L x W x H (cm)2.9 x 3.2 x 3.1

Industrial Applications

1. Position Monitoring in Hazardous Industrial Environments

The SJ5-K-N is ideally suited for precise position detection of components within chemical processing plants, pharmaceutical facilities, or oil and gas operations. Its NAMUR output provides intrinsic safety, crucial for preventing ignition in potentially explosive atmospheres, while the IP67 rating ensures robust operation in dusty or wet conditions.

Problem Solved

Reliably detects the presence or position of metallic objects in potentially explosive atmospheres, preventing false readings or sensor failure due to hazardous substances, moisture, or extreme temperatures (up to 100°C).

NAMURintrinsically safehazardous areaIP67position sensingchemical processingoil & gasexplosive atmosphereshigh temperature (100°C)

2. High-Speed Object Counting and Quality Control in Packaging Machinery

Leveraging its 5 mm slot width and high switching frequency of up to 2000 Hz, the SJ5-K-N can accurately detect and count small, fast-moving objects on automated packaging lines. This enables precise quality control for ensuring correct component assembly, label application, or package filling in high-throughput manufacturing.

Problem Solved

Accurately counts and detects fast-moving small objects for production monitoring and quality assurance, minimizing errors, reducing waste, and improving efficiency in automated packaging and assembly processes.

5 mm slot2000 Hz switching frequencyobject countinghigh-speed automationquality controlpackaging machineryassembly lines

3. Tool Monitoring and Breakage Detection in Machine Tools

Integrated into CNC machining centers, the SJ5-K-N can precisely monitor the presence and integrity of cutting tools (e.g., small drill bits or milling cutters) due to its accurate 5 mm slot detection. Its fast response time allows for immediate detection of tool breakage or incorrect tool changes, protecting workpieces and machinery. The IP67 protection safeguards against coolants and metal chips.

Problem Solved

Detects tool presence or breakage rapidly and accurately in machining operations, preventing costly material waste, extensive machine damage, and ensuring continuous, reliable production with reduced downtime.

5 mm slottool monitoringtool breakage detectionCNC machineIP67fast responsemachiningcoolant resistant
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