Product Overview

The SICK UM12 ultrasonic sensor is a compact, robust measurement device designed for precise distance detection in industrial environments. It operates within a range of 40 mm to 240 mm, with a limiting range of up to 350 mm, offering reliable performance across varying conditions. Featuring high resolution of ≥ 0.069 mm and excellent repeatability of ± 0.15% of the measured value, it delivers accurate and consistent results. With built-in temperature compensation, the sensor maintains measurement integrity under changing ambient temperatures. The PNP digital output provides a stable signal with a maximum output current of ≤ 200 mA, making it ideal for integration into control systems requiring reliable feedback. Its compact dimensions (12 mm x 12 mm x 55.1 mm) and lightweight design (15 g) ensure easy installation in tight spaces while maintaining durability.

Key Features and Technology

The UM12 leverages advanced ultrasonic technology with a typical operating frequency of 500 kHz to achieve precise distance measurements. The sensor uses a metal housing with nickel-plated brass, PBT, and polyurethane foam for the transducer, ensuring durability and signal integrity. Temperature compensation is integrated into the design to maintain accuracy across temperature variations. With a response time of just 30 ms and an output pulse duration of 10 ms, it provides fast feedback suitable for dynamic processes. The digital PNP output (HIGH = V_S- (<2 V), LOW = 0 V) ensures compatibility with standard industrial logic circuits. The sensor is reverse-polarity protected and short-circuit protected, operating safely in high-current environments up to a maximum of 8 A (Class 2). This combination of speed, precision, and protection makes the UM12 ideal for real-time monitoring applications.

Technical Characteristics

The SICK UM12 offers a measurement range from 40 mm to 240 mm, with a limiting range of 350 mm. Resolution is ≥ 0.069 mm and repeatability is ± 0.15% of the measured value. Measurement accuracy is specified at ±1% of the current reading. The sensor operates with a typical ultrasonic frequency of 500 kHz. Digital output type is PNP, with a maximum output current of ≤ 200 mA. Supply voltage ranges from DC 10 V to 30 V. Output time is 10 ms, and response time is 32 ms (typical). The sensor features temperature compensation for improved accuracy in varying thermal conditions. Housing material includes nickel-plated brass, PBT, and a polyurethane foam transducer with glass epoxy resin components. Protection class is III, and the enclosure rating is IP65 / IP67, ensuring dust and water resistance.

Configuration and Integration

The UM12 integrates seamlessly into industrial automation systems via its PNP digital output (HIGH = V_S- (<2 V), LOW = 0 V). The maximum output current of ≤ 200 mA ensures compatibility with standard PLCs, HMI devices, and control circuits. Connection is made through a male M12, 4-pin connector, with thread size M12 x 1, enabling secure mounting on equipment or enclosures. The sensor operates in short-circuit protected networks up to 8 A (Class 2), enhancing safety during installation and operation. Its compact footprint and standardized interface simplify wiring and reduce integration time. No additional power conditioning is required due to its wide supply voltage range of DC 10 V to 30 V, making it suitable for diverse electrical environments.

Operating Environment

The SICK UM12 is designed for operation in harsh industrial conditions with an IP65 / IP67 enclosure rating, providing complete protection against dust ingress and water splashes or immersion up to 1 meter. It operates reliably under a wide range of ambient temperatures, thanks to built-in temperature compensation. The sensor is suitable for use in environments where exposure to moisture, vibration, or particulates is common. Protection class III ensures compliance with safety standards for electrical equipment. While not rated for continuous submersion, the IP67 rating allows temporary immersion in water up to 1 meter depth for short durations. It performs consistently within its specified operating range and is unaffected by typical industrial contaminants when used within recommended environmental limits.

Industrial Applications

The SICK UM12 is ideal for applications requiring precise, non-contact distance measurement in challenging environments. Suitable uses include level detection in tanks, object presence sensing, thickness monitoring, and position feedback in automated assembly lines. Its compact size and robust construction make it suitable for integration into packaging, material handling, and quality control systems. The sensor’s high resolution and accuracy support tight process tolerances, while its fast response time enables real-time control. Applications such as edge detection, fill level monitoring, and product alignment benefit from the sensor's reliability and durability in continuous operation. Its IP65/IP67 rating ensures long-term performance even in dusty or wet industrial settings where conventional sensors may fail.