Category Archives: Temperature Measurement

Calex PyroSigma - miniature infrared temperature sensor with display - rear view showing display and controls

The remarkable new PyroSigma infrared temperature sensor with built-in display is now available to order. 

How to find the right emissivity setting for an infrared temperature sensor

For accurate results when using an infrared temperature sensor (pyrometer), the emissivity setting must be correct. Here are some methods to help you find the right setting to use.

Save space and cut costs with the new PyroMini OEM from Calex. This infrared pyrometer has a miniature sensing head that can be used in ambient temperatures of up to 120°C with no need for cooling.

PyroMini Settings Screen

Powerful processing features are available on many Calex infrared temperature sensors as standard. Learn more about these features, and some of the sensors that provide them.

pyrometer food

Calex non-contact infrared temperature sensors are ideally suited for use in food processing and manufacturing industries, as they can be used without contaminating or disturbing the product. The sensors have a very fast response time and can accurately measure the surface temperature of food substances moving on a conveyor belt, in vats with stirrers and … Continue reading Non-Contact Infrared Sensors in the Food Processing Industry

Short wavelength infrared temperature sensors provide improved results on hot metal surfaces. Here is a comparison of three of our shortwave pyrometers.

Calex short wavelength (2.0 to 2.6 µm) infrared temperature sensors are suitable for accurately measuring the surface temperature of non-metals and some metals at high or low temperatures. These sensors have adjustable emissivity settings, reflected energy compensation and peak and valley hold processing, making them particularly suitable for measuring hot objects in a furnace or on … Continue reading Comparison of Short Wavelength Infrared Temperature Sensors

The FTK calibration source is a low cost way of checking the accuracy of infrared temperature sensors.

Blackbody calibration sources from Calex allow the calibration of infrared temperature sensors with low uncertainty. This article explains what makes the best blackbody calibration source for a given application and what you should consider when choosing one. 

Infrared temperature sensors are commonly used in industry to control aspects of the process such as heaters, cooling systems and line speed. One of the simplest ways to measure temperature without contact and obtain a control output is to use a Calex PyroCouple pyrometer and a low-cost indicating controller such as the ATR121. Here’s how.

Many of our infrared temperature sensors have a feature called Peak or Valley Hold Processing. What does this feature do, and when should you use it?

Calex can supply protective windows for pyrometers, and IR-transmissive viewport windows. This brief summary aims to help you to choose a suitable window. Protective Windows Protective windows, such as PWS and PWL, are ideal for use in the food and pharmaceutical industries. They protect the lens of Calex infrared temperature sensors by preventing contamination and/or … Continue reading Which Viewport Windows are Suitable for Calex Infrared Temperature Sensors?