Leuze Sensor DMU318-300/VT-M12 Ultrasonic distance sensor

Description

The DMU318-300/VT-M12 is the “short-range specialist” of the synchronized family. The “VT” configuration is essential for dense machine environments where multiple ultrasonic sensors are mounted close together. By using the Synchronization/Trigger pin, the sensors can be “multiplexed” (fired in a specific sequence) to prevent one sensor from accidentally hearing the echo of another.

Using Time-of-Flight (ToF) technology, it remains immune to target color, transparency, or surface gloss. It is a superior solution for detecting clear glass vials, liquid levels in small reservoirs, or reflective metallic parts. The 0–10 V signal provides a linear representation of the distance within the calibrated window, which can be set using the onboard Teach-in button.

Features

0–10 V Analog Output: Delivers a high-resolution voltage signal that scales linearly with distance, easily integrated into standard PLC analog input cards.
External Trigger/Sync Input: Enables “Multiplex” operation to eliminate cross-talk between adjacent sensors or “Triggered” measurement to fire only when a part is in position.
Short-Range Precision: Optimized for the 40–300 mm window, providing exceptional accuracy for small-scale positioning and height checks.
Onboard Teach Button (3): Includes a physical button on the rear for manual calibration of the 0 V and 10 V setpoints without requiring external software.
Robust Plastic Housing: Constructed from chemical-resistant PBT (Polybutylene terephthalate), making it lightweight and resistant to industrial cleaning agents.
Automatic Temperature Compensation: Adjusts for air density changes to ensure the measurement remains stable even if the factory environment fluctuates.

Specifications

Feature	Specification
Sensing Range	40 mm to 300 mm
Blind Zone (Dead Band)	0 mm to 40 mm
Output Type	0 – 10 V Analog Voltage
Control Input	Trigger / Synchronization Pin
Operating Voltage	15 – 30 V DC
Resolution	Approx. 1 mm
Housing Material	Plastic (PBT) / Epoxy resin face
Connection	M12, 5-pin male connector

Applications

High-Precision Level Sensing: Measuring liquid levels in small chemical vials or narrow laboratory tubes.
Synchronized Height Checking: Using multiple sensors in a row to profile the height of a component without them interfering with each other.
Electronic Assembly: Providing distance feedback for PCB boards or trays in high-speed pick-and-place machines.
Film & Foil Slack Monitoring: Measuring the loop depth of narrow materials in converting machinery with very tight overhead clearance.
Robotic Gripper Feedback: Integrated into end-of-arm tooling to provide precise “distance-to-target” data for delicate picking operations.