The LM18 series is a cylindrical, analog inductive proximity sensor designed to detect metallic objects without physical contact. It is commonly used in industrial automation for position sensing, speed monitoring, and metal part detection. The "LM" designation indicates it is an inductive sensor [citation:2].
| Parameter | Value |
|---|---|
| Sensor Type | Inductive Proximity |
| Housing Size | M18 (18mm diameter) [citation:3] |
| Mounting Options | Flush (shielded) / Non-flush (unshielded) [citation:3] |
| Supply Voltage | 1030V DC [citation:4], 1530V DC [citation:6], or 6-36V DC variants [citation:2] |
| Detection Distance | 5mm (flush) / 8mm (non-flush) [citation:1][citation:3] |
| Output Type | Analog (010V or 420mA) [citation:6] |
| Output Current | 200mA (DC) / 300mA (SCR/Relay) [citation:3] |
| Response Frequency | 200Hz (DC) / 25Hz (AC) [citation:3] |
| Protection Rating | IP67 [citation:3][citation:4][citation:6] |
= Key Features =
Analog Output Provides a 010V or 4-20mA signal, representing exact target distance [citation:6]
NonContact Operation Detects metal objects through air gaps, ideal for dirty or high-speed environments [citation:1]
High Durability - Metal housing and IP67 rating ensures reliable operation in harsh industrial settings [citation:3]
Flexible Configuration - Available with NPN, PNP, or relay outputs, and in NC or NO configurations [citation:2][citation:3]
LED Status Indicator - Provides clear visual confirmation of power and output state [citation:9]
√ Suitable for industrial automation, assembly lines, and robotic systems
√ Compatible with PLC and microcontroller inputs (with suitable analog interfaces)
No output signal:
Inconsistent detection: