What are optical sensors and where are they used in industry?

Optical sensors detect objects, movement, or position using light – usually in the visible or infrared range. In industrial applications, they are used for product tracking, position detection, and quality control.
Proxitron optical sensors are specially designed for high ambient temperatures up to 600 °C and operate reliably in rolling mills, production and assembly lines, as well as in automation systems.

What is an HMD sensor (Hot Metal Detector)?

An HMD sensor detects hot metal contact-free by measuring its infrared radiation. In steel and rolling mills, HMD sensors are used to monitor the position, presence, and movement of glowing material.
Proxitron HMD sensors are designed for extreme environments and ensure precise detection at temperatures above 1 000 °C, making them essential for safe and efficient process control.

How do laser distance sensors work?

Laser distance sensors measure distances using a laser beam that is reflected from a surface. The sensor calculates the exact distance from the time of flight or phase shift of the light.
Proxitron laser distance sensors enable high-precision measurements even at high temperatures or long ranges, making them ideal for position control, thickness measurement, and material flow regulation.

What is a pyrometer and when is it used?

A pyrometer measures surface temperature without contact by detecting the emitted thermal radiation. In industrial processes – particularly in metal, glass, and steel production – this technology is crucial for quality assurance.
Proxitron pyrometers are designed for measurement ranges up to 1 800 °C and withstand the same harsh conditions as our infrared and light barrier systems.

Why choose Proxitron?

Proxitron stands for engineering excellence, reliability, and precision made in Germany. Our sensors are designed and manufactured to deliver consistent performance even in demanding industrial environments – including applications with high temperatures, contamination, or vibration. Their robust construction and advanced technology ensure long-term stability and process reliability.

In addition, Proxitron offers customized solutions, technical expertise, and direct communication with our engineers. This allows us to provide fast response times and application-specific advice. With Proxitron, you gain more than a sensor – you gain a trusted partner for your automation and process control needs.

Interested? Please get in contact with us >>

What advantages do Proxitron sensors provide?

Robustness   
Our sensors are specially designed for continuous use in harsh environments.

Precision   
Highest measuring accuracy even in extreme temperatures, dust or vibrations.

Flexibility   
Different designs and operating principles (reflective light barriers, laser variants, etc.) for every application.

Made in Germany   
Development and production according to the highest quality standards.