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Thermal imagers

The measuring instrument for every application: there are hardly any measuring instruments that are as versatile as a thermal imager.

Making temperatures visible with the help of thermography makes your work easier in these applications, among others:

  • In building thermography a Testo thermal camera helps you to detect thermal bridges and structural defects.

  • In heating construction, you can use thermography to check the function of underfloor heating systems or detect leaks non-destructively.

  • In maintenance a thermal camera enables you to see wear before systems fail.

Would you like to buy a thermal imager?
You should take the following into consideration:

  • Resolution: at least 160 x 120 pixels

  • Thermal sensitivity

  • Software for analysis and professional reports

  • Easy and intuitive operation

The thermal imager – your new favourite tool

Theory, practice, tips and tricks

Pocket guide thermography

Download the exclusive application guide for free now.

To download

Emission, reflection, transmission

Measurement spot and measuring distance

Measuring object and measuring environment

Sources of error in infrared measurement

Practical determination of ε and RTC

And much more ...


IFOV calculator for Testo thermal imagers

The FOV calculator shows you quickly and easily just how small the measurement object can be in order to be detected (IFOV geo) and reliably measured (IFOV meas) at the selected distance.

To the calculator

Smallest recognisable object (IFOVgeo)

Smallest measurable object (IFOVmeas)

Size of the field of view (FOV)



Distance of the thermal imager to the measurement object

Applications, functions and further information on Testo thermal imaging cameras

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testo 872 thermal imager – A thermographic camera for all tasks

Smart thermography with the highest image quality – this is what the testo 872 model stands for:

  •  Infrared resolution 320 x 240 pixels (with testo SuperResolution technology 640 x 480 pixels)

  • Integrated digital camera and laser marker

  •  Wireless measurement data transfer from the testo 770-3 clamp meter and testo 605i humidity measuring instrument

  • With testo Thermography App

Depending on the application, you will still need more measuring instruments for efficient temperature measurement in addition to a thermal camera. We have put together a small selection of our bestsellers for you here.