Name: Pepperl+Fuchs NJ20P+U1+A2 Inductive Proximity Sensor - INOSAKI
SKU: PEPPERL-FUCHS-NJ20P+U1+A2
Price: 115.44 USD
Availability: InStock

Technical Overview

The Pepperl+Fuchs NJ20P+U1+A2 is a robust inductive proximity sensor designed for reliable, non-contact detection exclusively of non-ferrous metals in industrial environments. Featuring a 20mm non-flush sensing distance and complementary PNP output, this 4-wire DC sensor offers consistent performance across a wide operating voltage range. Its durable PBT housing and IP68 protection ensure suitability for demanding applications.

Key Features

Designed exclusively for the detection of non-ferrous metals.
Provides a 20 mm non-flush rated operating distance.
Features a 4-wire DC output with complementary PNP switching function.
Wide operating voltage range of 10-30 V DC.
High degree of protection, rated IP68, suitable for harsh environments.
Equipped with green LED for operating voltage and yellow LED for switching state indication.
Includes reverse polarity protection and pulsing short-circuit protection.
Constructed with a durable PBT housing and sensing face.
Offers a terminal compartment connection for secure wiring.

Technical Specification Matrix

Parameter	Value
Sensing Principle	Inductive
Target Material	Non-ferrous metals only
Rated Operating Distance (sn)	20 mm
Installation	Non-flush
Output Type	PNP, complementary
Output Polarity	DC
Wiring Type	4-wire
Operating Voltage (UB)	10-30 V DC
Switching Frequency (f)	0-200 Hz
Operating Current (IL)	0-200 mA
No-load Supply Current (I0)	≤ 20 mA
Voltage Drop (Ud)	≤ 3 V
Hysteresis (H)	1-10% typ. 5%
Reverse Polarity Protection	Yes
Short-circuit Protection	Pulsing
Time Delay Before Availability (tv)	≤ 10 ms
Operating Voltage Indicator	LED, green
Switching State Indicator	LED, yellow
Ambient Temperature	-25 ... 70 °C (-13 ... 158 °F)
Housing Material	PBT
Sensing Face Material	PBT
Degree of Protection	IP68
Connection Type	Terminal compartment
Core Cross-section	up to 2.5 mm² (without wire end ferrule), 0.34-1.5 mm² (with connector sleeves)

Industrial Applications

1. Material Sorting in Recycling Facilities

This sensor can be effectively deployed in recycling plants to differentiate and sort non-ferrous metals like aluminum or copper from other materials on conveyor belts. Its exclusive ability to detect non-ferrous targets ensures accurate separation processes.

Problem Solved

Automated and accurate segregation of non-ferrous metals from mixed waste streams to improve recycling efficiency and material purity.

Non-ferrous metal detectionMaterial separationRecycling automationConveyor belt sensingPNP output

2. Position Monitoring for Non-Ferrous Components in Assembly Lines

Ideal for precision position sensing of aluminum or copper parts in automated manufacturing and assembly lines. The 20mm non-flush sensing distance allows for flexible mounting, and the complementary PNP output provides clear presence/absence signals for control systems, without being affected by ferrous tooling nearby.

Problem Solved

Ensuring precise placement and presence verification of non-ferrous components in automated assembly, avoiding errors and ensuring product quality.

Automated assemblyNon-contact position sensingAluminum parts detectionCopper component verificationIndustrial automationPNP logic

3. Tool Breakage Detection on CNC Machines for Non-Ferrous Machining

Utilize this sensor for reliable tool breakage detection on CNC machines processing non-ferrous alloys. Its IP68 rating provides protection against coolant and metal chips, while the 200 Hz switching frequency enables rapid detection of tool presence or absence during high-speed machining operations.

Problem Solved

Preventing costly damage to workpieces and machinery by quickly detecting the absence of non-ferrous cutting tools during operation, even in harsh machining environments.

CNC machiningTool monitoringNon-ferrous alloysTool breakage detectionCoolant resistanceHigh-speed sensing