Infrared temperature sensors

Infrared Temperature Sensors: Non-Contact Temperature Measurement for Industrial Applications

Infrared temperature sensors enable the non-contact measurement of surface temperatures across a wide range of industrial and technical applications. They are used wherever temperatures must be measured quickly, accurately, and without direct contact—for example, on moving objects, sensitive materials, or hard-to-reach measurement points. An infrared temperature sensor measures the temperature of an object by detecting the infrared radiation it emits. This radiation is captured by a sensor, converted into an electrical signal, and then processed electronically.

Infrared temperature sensors are used in many fields, including industrial automation, machine monitoring, process control, medical technology, and building and HVAC systems.

How Infrared Temperature Sensors Work

Infrared temperature sensors operate based on the physical principle that every object with a temperature above absolute zero emits infrared radiation.

The sensor consists of several key components:

• Infrared detector: Captures the emitted energy from an object
• Optics: Focuses the radiation and defines the measurement area (spot size)
• Signal processing / electronics: Converts the signal into a temperature value

The intensity of the measured radiation is converted into an electrical signal and then calculated into a temperature value. Modern sensors offer high measurement speed, precise results, and stable signal processing. A key advantage of this technology is its non-contact measurement capability, allowing reliable monitoring of hot, rotating, or hard-to-reach objects.

Typical Areas of Application

Infrared temperature sensors are used in a wide range of applications:

• Monitoring of machines and equipment
• Process control in industrial environments
• Temperature measurement of moving or rotating objects
• Quality control in production processes
• Building and HVAC systems
• Energy and environmental technology
• Medical technology (e.g., non-contact thermometry)
• Research and development

How to Choose the Right Infrared Temperature Sensor

Selecting the right sensor depends on several key factors:

• Measurement range
  The sensor must be suitable for the expected temperature ranges.
• Optics and spot size
  The distance-to-spot ratio determines measurement accuracy.
• Emissivity
  The material properties of the object being measured influence the results and must be taken into account.
• Response time
  Fast sensors are required for dynamic processes.
• Environmental conditions
  Temperature, dust, humidity, or electromagnetic interference can affect sensor selection.

We are happy to support you in selecting the right infrared temperature sensor for your application. Feel free to contact us!