Generic LJ18A3-8-Z/AX Inductive Proximity Sensor NPN NC, DC 6–36V, 6.4mm Detection, Brass-Nickel Plated
Generic LJ18A3-8-Z/AX Inductive Proximity Sensor NPN NC, DC 6–36V, 6.4mm Detection, Brass-Nickel Plated - Image 2
SKU: SENS-1272
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Generic LJ18A3-8-Z/AX Inductive Proximity Sensor NPN NC, DC 6–36V, 6.4mm Detection, Brass-Nickel Plated

₹329.00 (Inclusive of all taxes)
Out of Stock

The LJ18A3-8-Z/AX is a shielded, tubular inductive proximity sensor with a 6.4mm detection range for ferrous metals, operating on a wide 6–36V DC supply with NPN normally-closed (NC) output. It is designed for direct interfacing with PLCs and industrial control systems, featuring an IP65-rated brass-nickel plated housing for harsh environments.

Features

  • NPN Normally-Closed (NC) output for direct PLC and controller interfacing.
  • Wide operating voltage range of 6–36V DC with reverse polarity and short-circuit protection.
  • IP65-rated brass-nickel plated housing for resistance to dust, water, oil, and vibration.
  • High switching frequency and repeatable positioning accuracy for automated machinery.
  • Shielded design allows for flush mounting in metal without loss of sensing distance.

Out of stock

Description

The LJ18A3-8-Z/AX operates on the electromagnetic induction principle, where an eddy current induced in a nearby ferrous metal target disturbs the sensor’s oscillating magnetic field, triggering a solid-state switch. This non-contact detection method eliminates mechanical wear, sparks, and pressure, ensuring long-term reliability and precise position feedback for moving mechanisms.

Engineered for industrial automation, its robust brass-nickel plated casing and IP65 ingress protection rating make it suitable for installation in challenging environments prone to dust, moisture, and oil splash. The integrated LED status indicator provides immediate visual confirmation of the switching state, simplifying installation and troubleshooting.

Key Features

  • Non-contact inductive sensing for iron and steel targets up to 6.4mm.
  • Solid-state NPN open-collector output (normally-closed configuration) sinks up to 300mA.
  • Built-in reverse polarity protection and output short-circuit protection.
  • High vibration resistance and stable operation across a wide temperature range.
  • Shielded (flush-mountable) design prevents interference from surrounding metal.
  • High repeatability and fast response time for high-speed counting and positioning applications.
  • Durable brass-nickel plated sensor body with integrated 1.2-meter cable.
  • Optimized performance-to-cost ratio for industrial machine control and robotics.

Applications

  • Precision positioning and end-of-travel detection in CNC machines and mold presses.
  • Non-contact limit switching and part presence verification in automated assembly lines.
  • Rotational speed monitoring and object counting on conveyor systems.
  • Robotic arm position feedback and tool change detection.
  • Material handling equipment where dust, moisture, or oil is present.

Technical Specifications

Model NumberLJ18A3-8-Z/AX
Detection PrincipleInductive
Detection ObjectFerrous Metals (Iron, Steel)
Rated Detection Distance6.4 mm
Operating Voltage6 – 36 V DC
Output ConfigurationNPN, Normally Closed (NC)
Max. Load Current300 mA
Housing MaterialBrass, Nickel Plated
IP RatingIP65
Cable Length1.2 meters
Insulation Resistance>50 MΩ

Frequently Asked Questions

What type of output does this LJ18A3 sensor have, and how do I wire it?

This sensor has a 3-wire NPN normally-closed (NC) output. Connect the brown wire to your positive DC supply (6-36V), the blue wire to DC negative (GND), and the black wire is the switched output. In the NC configuration, the black wire is internally connected to GND when no target is present, and it opens (goes high-impedance) when a metal target is within the 6.4mm detection range.

Can this sensor detect non-ferrous metals like aluminum or copper?

No, this is a standard inductive proximity sensor optimized for detecting ferrous metals such as iron and steel. The sensing distance is specified for iron targets. For non-ferrous metals, the effective sensing distance will be significantly reduced, and a sensor specifically designed for all-metal detection would be required.

Is the sensor body shielded, and what does that mean for installation?

Yes, the LJ18A3-8-Z/AX is a shielded (flush-mountable) type. This means it can be installed flush into a metal mounting bracket or panel without the surrounding metal affecting its sensing performance or reducing its nominal detection distance of 6.4mm.

What is the purpose of the LED on the sensor?

The integrated red LED serves as a status indicator. It illuminates when the sensor's internal switch is activated (i.e., when a metal target is within range). This provides immediate visual feedback during installation, alignment, and troubleshooting, confirming the sensor is powered and functioning correctly.

Package Includes

  • 1 x Inductive Proximity Sensor (LJ18A3-8-Z/AX)

Additional Information

Weight 0.08 kg
Dimensions 12 × 9 × 4 cm

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