Leuze Sensor DMU420B-250.3/LC-M8 Ultrasonic distance sensor

Description

The “DMU” series uses high-frequency sound waves to detect targets, making it completely independent of the object’s color, transparency, or surface gloss. The LC (Low Cost) designation indicates a streamlined design optimized for high-volume applications where a simple “object present” or “object absent” signal is required, but precision cannot be compromised.

Specifications

Feature	Specification
Sensing Range	20 mm to 250 mm
Blind Zone (Dead Band)	0 mm to 20 mm
Output Type	Push-Pull (Switching)
Operating Voltage	10 – 30 V DC
Switching Frequency	~25 Hz
Housing Material	Nickel-plated brass / PBT
Connection	M8, 3-pin or 4-pin male

Features

Material Independent: Reliably detects clear glass, liquids, dark plastics, and multi-colored surfaces that often “blind” optical sensors.
Push-Pull Output: A versatile “universal” output that can operate as either PNP or NPN, simplifying wiring and reducing the need to stock multiple sensor types.
Ultra-Compact M12 Housing: The small diameter allows for installation in very tight mechanical assemblies or dense sensor arrays.
High-Visibility LEDs: Typically features integrated LEDs to indicate power status (Green) and switching state (Yellow).
IP67 Protection: Fully sealed agains

Applications

Small Bottle Counting: Detecting transparent vials or glass containers on high-speed conveyor belts.
Level Limit Sensing: Acting as a “High” or “Low” level alarm for liquids or small parts in miniature hoppers.
Precision Presence Detection: Identifying the arrival of tiny components in automated assembly jigs.
Edge Detection: Monitoring the position of a web or material edge in narrow-width processing machinery.
Close-Range Obstacle Avoidance: Used in small robotic grippers or axes to prevent collisions during fine movements.