Baumer UNDK 20N7914/S35A Ultrasonic Sensor

The Baumer UNDK 20N7914/S35A: 10150076 sensor delivers robust performance backed by a scanning range of 10 to 200 mm with typical hysteresis of just 4%, ensuring high accuracy in repetitive measurements. Its repeatability of 0.5 mm makes it suitable for precise object positioning tasks where consistency matters. The sensor operates on a wide voltage supply range of 12 to 30 VDC and supports an NPN break function (NC) output circuit capable of handling up to 200 mA, with integrated short circuit and reverse polarity protection.

Designed in a compact rectangular housing (20 mm × 42 mm × 15 mm) made from rugged polyester, this sensor is ideal for tight industrial spaces. Its fast response time of less than 10 ms ensures rapid detection even in high-speed operations, while the Teach-in adjustment and green LED indicator simplify installation and status checks. The M8 connector makes it easy to integrate into existing systems, and with an IP67 protection rating, the sensor resists dust and water ingress in demanding environments. Operating reliably across -10 to +60 °C, this model is trusted in both indoor and semi-outdoor factory settings where durability and repeatability are critical.

The Baumer UNDK 20N7914/S35A is commonly used in industrial environments where non-contact, accurate detection is essential. In the packaging industry, it helps detect items on conveyor belts regardless of shape, color, or surface texture. In automated assembly lines, it can be used to monitor part presence or positioning where optical sensors might fail due to dust or transparent materials.

Maintenance engineers appreciate this sensor for its simple Teach-in adjustment feature, which reduces setup time and allows quick reconfiguration during maintenance or changeovers. Its compact size and durable housing make it ideal for machinery with limited mounting space, such as robotic arms or compact sorting machines.

For engineering students and junior engineers, this sensor is a great example of how ultrasonic technology works in real-world scenarios—reliably detecting objects through sound waves, unaffected by light or surface color. Whether you're optimizing uptime or building a prototype system, the UNDK 20N7914/S35A offers dependable performance with minimal complexity.