Simplifying far-infrared temperature sensor selection

Selecting the correct non-contact far-infrared (FIR) temperature sensor can be challenging due to performance and application factors, including the target object's size and distance. Experimental trial and error can be complicated and time-consuming, possibly wasting development resources. To meet this challenge, Melexis has launched an online tool to support its MLX90614 product range.

For any given application, engineers seeking to deploy FIR sensors need to consider a wide range of parameters, including the sensor's FOV. The primary difficulty with using FOV alone is that it's a simplification that can lead to errors in the sensor selection, often failing to provide the required precision.

The company has developed an intuitive online studio to streamline the selection of its extensive portfolio of MLX90614 FIR sensors, ensuring engineers can quickly find the right device for their application.

Engineers using the tool need to enter the following application information:

• The diameter of the measured object
• The distance to the measured object
• The expected temperature range of the measured object
• The maximum expected temperature difference between the object and its background
• The maximum acceptable temperature deviation due to the distance to spot ratio

From here, the selection can be narrowed further by setting the ideal supply voltage and whether medical accuracy is required. The tool then suggests sensor(s), taking into account each device's parameters.

The new online tool is completely free to use and supports the company's comprehensive FIR product lineup. This includes a wide selection of advanced MLX90614 sensors capable of measuring object temperature from -70C to 380C, and a variant that features accuracy suited for medical applications.

"FIR sensing is a crucial part of many modern applications, from cooking to safety monitoring in industry, but choosing the right sensor without manufacturer assistance can be incredibly difficult," said Joris Roels, marketing manager at Melexis. He continued, "We designed this tool to be a simple, user-friendly online resource that lets engineers easily identify the correct sensors for their application, helping them to avoid development mistakes."