Technical Overview

M18 cylindrical ultrasonic sensor offering 120-1000mm operating range, 0.2mm resolution, and 4-20mA analog output. IP65/IP67 rated for industrial use.

Key Features

M18 cylindrical design for easy integration
Operating range 120 mm to 1,000 mm, limiting range 1,300 mm
Resolution of ≥ 0.2 mm for high accuracy
Repeatability of ± 0.15% and measurement accuracy of ± 1%
Fast response time of 80 ms
Current analog output: 4 mA ... 20 mA, 12 bit resolution
Teach-in and invertable analog output functions
Robust plastic housing (PBT) with IP65/IP67 enclosure rating
Wide operating temperature range of -25 °C to +70 °C
M12, 4-pin male connector for standard connectivity

Technical Specification Matrix

Parameter	Value
Operating range, limiting range	120 mm ... 1,000 mm, 1,300 mm
Resolution	≥ 0.2 mm
Repeatability	± 0.15%
Measurement accuracy	± 1%
Response time	80 ms
Output time	20 ms
Ultrasonic frequency (typical)	200 kHz
Additional function	Teach-in of analog output, Invertable analog output, Reset to factory default
Safety-related parameters MTTF_D	101 years
Safety-related parameters DC_avg	0%
Analog output type	Current output
Analog output current	4 mA ... 20 mA, ≤ 500 Ω
Analog output resolution	12 bit
Supply voltage U_B	DC 10 V ... 30 V
Power consumption	≤ 1.2 W
Initialization time	< 300 ms
Display	2 x LED
Enclosure rating	IP65/IP67
Protection class	III
Design	Cylindrical
Sending axis	Straight
Housing material	Plastic (PBT, ultrasonic transducer: polyurethane foam, glass epoxy resin)
Thread size	M18 x 1
Connection type	Male connector, M12, 4-pin
Ambient temperature, operation	-25 °C ... +70 °C
Ambient temperature, storage	-40 °C ... +85 °C
Temperature drift	0.17 % / K
Dimensions (W x H x D)	18 mm x 18 mm x 52.7 mm
Physical Weight (kg)	0.02
Dimensions L x W x H (cm)	5.27 x 1.8 x 1.8

Industrial Applications

1. Liquid Level Monitoring in Industrial Tanks

Accurately monitoring fluid levels in processing tanks, preventing overflows or dry-running conditions without direct contact with the liquid, which is ideal for corrosive or hygienic applications.

Problem Solved

Provides continuous, non-contact liquid level measurement in tanks, overcoming issues of sensor contamination or wear when in direct contact with fluids. The 4-20mA analog output allows for precise level control and feedback to a PLC.

Liquid level sensingNon-contact measurementTank monitoring4-20mA analog outputIP67 protection

2. Object Position and Presence Detection on Conveyors

Reliably detecting the presence and precise position of objects on conveyor belts for automated sorting, counting, or robotic pick-and-place applications, irrespective of material color or transparency.

Problem Solved

Solves challenges of inconsistent optical detection by using ultrasonic technology, ensuring robust detection of various object types. The 0.2mm resolution and 80ms response time provide accurate positional data for automation tasks within the 1000mm operating range.

Conveyor controlObject detectionPosition sensingMaterial independenceHigh resolutionAutomated sorting

3. Roll Diameter and Web Tension Control

Monitoring the diameter of material rolls (e.g., paper, film, textiles) in production lines to maintain optimal web tension and ensure consistent product quality during unwinding or rewinding processes.

Problem Solved

Delivers continuous and precise feedback on roll diameter changes using its 4-20mA analog output and ±0.15% repeatability. This data enables dynamic adjustment of web tension, preventing material breaks or slack, thereby improving production efficiency and reducing waste.

Roll diameter measurementWeb tension controlMaterial processingContinuous feedbackProduction optimizationAnalog current output

SICK UM18-218166101 Ultrasonic Distance Sensor

SICK UM18-218166101 Ultrasonic Distance Sensor

Technical Overview

Key Features

Technical Specification Matrix

Industrial Applications

1. Liquid Level Monitoring in Industrial Tanks

2. Object Position and Presence Detection on Conveyors

3. Roll Diameter and Web Tension Control