Leuze Sensor DMU318-400.W3/4CK-M12 Ultrasonic distance sensor

Description

The DMU318-400.W3/4CK-M12 is the “short-range specialist” of the right-angle series. The “W” designation signifies that the transducer exit is directed at a 90° angle from the longitudinal axis of the PBT housing. This unique geometry allows the sensor to be “tucked” into narrow machine frames or low-profile conveyor side-walls where a straight sensor would physically collide with the target or require an awkward mounting bracket.

As a Time-of-Flight (ToF) sensor, it is immune to the optical properties of the target, reliably detecting clear glass, liquid levels, or highly reflective metal parts that often “blind” laser sensors. The “4CK” configuration is highly versatile for automation; it provides a stable 4–20 mA current loop for continuous distance tracking and a PNP digital output for threshold alerts, both of which can be calibrated using the onboard teach button.

Features

90° Angled Head (W): Provides a critical solution for lateral installation in confined spaces where vertical clearance is non-existent.
Short-Range Precision: Optimized for a tight 40–400 mm window, providing high-resolution detection (approx. $0.1 mm$ ) for small parts or narrow containers.
Analog & Digital Hybrid: Features a 4–20 mA analog current output for distance tracking and a PNP switching output for limit alerts.
Onboard Teach Button (3): Enables rapid manual calibration of the sensing window and switching points directly on the sensor body without external software.
Chemical-Resistant PBT Housing: Constructed from lightweight Polybutylene terephthalate, offering excellent resistance to industrial cleaning agents and high-pressure washdowns.
Integrated Temperature Compensation: Automatically adjusts the internal logic for changes in air density to maintain accurate measurements as factory temperatures fluctuate.

Specifications

Feature	Specification
Sensing Range	40 mm to 400 mm
Blind Zone (Dead Band)	0 mm to 40 mm
Output 1 (Analog)	4 – 20 mA Current
Output 2 (Switching)	PNP Transistor (Push-Pull compatible)
Operating Voltage	10 – 30 V DC
Switching Frequency	~10 Hz (Fast response for short range)
Resolution	< 1 mm
Housing Material	Plastic (PBT) / Epoxy resin face
Connection	M12, 5-pin male connector

Applications

Small Bottle & Vial Detection: Detecting the presence of clear glass or plastic containers on high-speed liquid filling lines.
Robotic Gripper Integration: Mounting on end-of-arm tooling where the 90° head allows for a low-profile mechanical footprint.
Feeder Bowl Monitoring: Tracking the fill level of small parts in vibration feeders or hoppers with low overhead clearance.
Loop Control in Narrow Webs: Measuring the slack of thin ribbons, foils, or wires in processing machinery.
Electronic Component Positioning: Precise distance feedback for PCB boards or small trays during pick-and-place operations.