Pepperl+Fuchs UB300-18GM40-I-V1 Ultrasonic Sensor

Technical Overview

Compact M18 ultrasonic sensor with 35-300mm range, 4-20mA analog output, IP67, and temperature compensation for precise distance and level measurement.

Key Features

Short design, 40 mm housing length.
Function indicators visible from all directions.
Analog output 4 mA ... 20 mA.
Measuring window adjustable.
Program input for easy configuration.
Integrated temperature compensation for stable operation.
Robust brass, nickel-plated housing with IP67 protection degree.
M12 x 1, 4-pin connector type.

Technical Specification Matrix

Parameter	Value
Sensing Range	35 ... 300 mm
Adjustment Range	50 ... 300 mm
Dead Band	0 ... 35 mm
Transducer Frequency	approx. 390 kHz
Response Delay	approx. 50 ms
Operating Voltage (UB)	10 ... 30 V DC, ripple 10 %SS
No-load Supply Current (I0)	≤ 20 mA
Output Type	1 analog output 4 ... 20 mA, short-circuit/overload protected
Resolution	0.4 mm at max. sensing range
Deviation of Characteristic Curve	± 1 % of full-scale value
Repeat Accuracy	± 0.5 % of full-scale value
Load Impedance	0 ... 300 Ohm
Temperature Influence	± 1.5 % of full-scale value
Ambient Temperature	-25 ... 70 °C (-13 ... 158 °F)
Storage Temperature	-40 ... 85 °C (-40 ... 185 °F)
Connection Type	Connector M12 x 1, 4-pin
Protection Degree	IP67
Housing Material	Brass, nickel-plated
Transducer Material	Epoxy resin/hollow glass sphere mixture; foam polyurethane, cover PBT
Physical Weight (kg)	0.03
Dimensions L x W x H (cm)	4 x 1.8 x 1.8

Industrial Applications

1. Continuous Level Monitoring in Small Industrial Tanks

This sensor is perfectly suited for continuously monitoring the level of liquids or bulk materials in small tanks or hoppers. Its 35-300mm sensing range and precise 4-20mA analog output allow for real-time level feedback, enabling automated refilling or discharge processes. The IP67 rating ensures reliable operation even in environments with splashes or dust.

Problem Solved

Accurate and continuous measurement of material levels in small containers, preventing overflows or run-dry situations, even in harsh industrial settings.

Continuous Level Sensing4-20mA Analog OutputIP67Small Tank MonitoringProcess Control

2. Object Distance Measurement and Positioning on Conveyor Belts

With its 35-300mm sensing range and 0.4mm resolution, the sensor can accurately determine the distance to various objects on a conveyor belt. This allows for precise positioning, sorting, or detecting the presence/absence of products for automated handling systems. The temperature compensation ensures consistent performance despite ambient temperature fluctuations.

Problem Solved

Reliable and precise object detection and distance measurement for automated sorting, positioning, and quality control on production lines.

Distance MeasurementObject DetectionConveyor AutomationPrecision PositioningTemperature Compensation

3. Material Slack/Loop Control in Web Processing

In applications involving the unwinding or rewinding of web materials (e.g., paper, film, textiles), maintaining consistent tension is crucial. This ultrasonic sensor can monitor the sag or loop of the material within its 35-300mm range, providing a continuous 4-20mA signal to a motor drive or tension control system to dynamically adjust speed and maintain optimal tension, preventing breaks or wrinkles.

Problem Solved

Maintaining consistent material tension in web processing applications by continuously monitoring loop sag and providing feedback for dynamic control, minimizing material waste and improving product quality.

Tension ControlLoop ControlWeb ProcessingAnalog FeedbackMaterial Handling