The features to look for in thermal imagers

Companies across diverse industry segments are increasingly using
thermal imagers within their processes in a variety of applications. Useful in
a range of situations, thermal imaging devices provide workers with an accurate
and safe approach to applications that would otherwise be dangerous for human

A recent study by Grand View Research reveals that the global imaging
market is expected to top US$6,499.5 million by 2020, driven by the ’emergence
and increased adoption of integrated solutions across commercial applications’.

Given the choices available in the market, businesses or companies
planning to invest in thermal imagers for the first time can be overwhelmed by the
features offered across various brands. Understanding these features will help
them select a device that is perfect for their needs.

Infrared image resolution

A thermal imager should have sufficient infrared resolution to deliver accurate
results. Most testo imagers feature a resolution of 160 x 120 pixels to provide
a detailed image of the chosen surface.

Measuring range

A common misconception associated with the use of a thermal imager is that
the device is only capable of detecting overheating objects. In reality,
thermal imagers are perfect for cold situations as well. Depending on the
model, testo thermal imagers have a measuring range of -20°C to +350°C. Many
testo thermal imagers are also capable of producing high-quality images from a
distance of up to 15 metres and identifying hotspots to a size of around 6


Thermal imagers are increasingly being used in various industries, and the
size has correspondingly evolved into more compact dimensions for ease of use. testo’s
lightest thermal devices weigh about 550g, enabling portable use, and can even
be carried in the pocket. Some of the larger variants weigh around 990g, but
are still light enough to be transported around the worksite.

Battery life

For measurement applications involving an extended period of time, it is
convenient to use a thermal imager with a long battery life. Most testo thermal
devices come with a Lithium ion rechargeable battery allowing four hours of

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