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Proximity inductive Sensor LJ18A3-8-Z/BY
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Proximity inductive Sensor LJ18A3-8-Z/BY in Pakistan
Here’s an image of the LJ18A3-8-Z/BY inductive proximity sensor (M18, 8 mm detection, PNP, Normally Open)—ideal for use on your website to give visitors a clear visual reference.
Product Details (for Website)
General Specifications – LJ18A3-8-Z/BY
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Model: LJ18A3-8-Z/BY (part of LJ18A3‑8 series) finglai.com+1tronic.lk
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Housing: M18 × 68 mm threaded cylinder; brass nickel‑plated body, ABS sensing surface finglai.com+1tronic.lkJAARIS Automation
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Installation: Non‑shielded (unshielded) construction finglai.comRobu
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Detection Distance: 8 mm ± 10% (setting distance ~6–7 mm) finglai.comtronic.lkRobu
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Operating Voltage: DC 6–36 V finglai.comtronic.lkAmazonRobu
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Output Type: PNP, Normally Open (NO) (3‑wire) finglai.comAmazontronic.lk
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Max Output Current: 300 mA finglai.comtronic.lkAmazon
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Response Frequency: ~500 Hz finglai.com+1tronic.lk
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Indicator: Red LED feedback when activated finglai.comtronic.lk
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Protection: Reverse polarity protected; short-circuit protection varies per vendor finglai.comLK Tronicstronic.lk
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Insulation & Durability:
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Insulation resistance ≥ 50 MΩ
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Dielectric strength: 1000 VAC, 1 min (between electrical parts and housing) finglai.comtronic.lk
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Ingress Protection: IP65 (dust-tight, splash resistant) finglai.comRobu
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Operating Temperature: –25 °C to +70 °C finglai.com+1Robu
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Cable: ~1.2 m PVC cable, 3-wire; Brown = +V, Blue = GND, Black = Output signal finglai.comLK TronicsAmazon
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Mechanical Specs:
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Body: ~60–68 mm length
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Resistant to vibration/shocks (supplier-dependent) LK Tronics
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Applications: Industrial automation, CNC, robotics, 3D printers (e.g., auto bed leveling), conveyor control, non-contact detection YUYONG INDUSTRY -LK TronicsReddit
How to Use
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Mounting:
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Thread into M18 nut or mounting bracket until the desired sensing point is aligned.
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As a non‑shielded sensor, ensure nearby metallic interference is minimized. finglai.comRobu
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Wiring:
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Brown → +V (DC 6–36 V)
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Blue → 0 V (Ground)
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Black → Signal Output (connects to PLC, microcontroller, etc.) LK TronicsAmazon
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Operation:
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Place a metal target within ~8 mm of the sensing face. The sensor will output PNP high and light the red LED. finglai.comAmazon
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Removal of object resets the output to low.
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Setup Tips:
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Leave at least 20% of detection distance as margin to account for hysteresis and ensure stable switching. LK Tronics
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Test detection using a ferrous metal target (e.g., steel); expect up to 60% reduced detection range for non-ferrous materials like aluminum or brass. Wikipediafinglai.com
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Use Case Highlight:
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On Reddit, one user shared how they wire the sensor for auto bed leveling on 3D printers:
“The probe has 3 wires brown black and blue… No need for resistors… simply plug and play.” Reddit
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Key Features Summary
| Feature | Benefit |
|---|---|
| Non-contact detection | Avoids wear & mechanical interference |
| 8 mm sensing distance | Accurate object detection without contact |
| PNP NO output | Easy to integrate with PLCs and controllers |
| LED indicator | Instant visual feedback on sensor activation |
| IP65 rated housing | Durable in dusty or damp industrial environments |
| Vibration/shock resistance | Reliable in harsh conditions |
| Wide voltage range | Flexible deployment across systems |
| Compact M18 size | Easy mounting and space-saving design |





