Thermal Imaging – It’s all about the resolution

Not all thermal images are the same. If you are using thermography for example to detect leakages, cold bridges, mould or overheated components, the details matter. These elements, as well as many others, only become visible from a resolution of 160 x 120 pixels. Every pixel is a measuring point, therefore the higher the resolution, the more accurately you measure. And when you measure more accurately, you detect irregularities earlier, avoiding unnecessary damage for you or your customer.



Screen resolution is hugely important for all types of thermography


Another big advantage of using a camera with exceptional resolution is that thermal images can be taken at far greater distances, without affecting the image quality. In addition to this, low spec thermal images can be unclear, and often don’t provide a true or accurate reading. It is for these reasons that many only consider thermal imaging from a resolution of 160 x 120 pixels “real thermography”, with true value, rather than just a gimmick.

Thermal imaging is used in a number of industries, however in order to fully utilise this technology you first need make sure you’re using a quality camera. A good thermal camera should be a robust, quality tool which can be used for many day to day applications. Here are some examples where having the facility to take clear, crisp, non-intrusive thermal images is a huge advantage:


Checking heating installations

Whether pipes hidden under plaster, or leakages: With a thermal camera, you can non-intrusively make visible what you cannot see with the naked eye. You effortlessly visualise underfloor heating courses, and check the performance of a radiator at a glance. In these applications, a thermal sensitivity (NETD) of at least 100 mK is also important, in addition to the resolution.


blocked radiator 2

Using thermal imaging you can visualise heat distribution of radiators and heating systems


Inspecting switching cabinets

In switching cabinets, malfunctions are usually preceded by a temperature increase. With top-quality thermal camera you can not only measure this, but also visualise it. This can all be achieved precisely, without contact, and before it’s too late. The high-quality 160 x 120-pixel detector never misses an overheated contactor, an overloaded cable or an insufficiently tightened clamp.


testo-thermal-imaging-overheating cable

With a thermal camera you can pinpoint overheating cables immediately


Discovering building defects

Using thermal imaging you can discover and analyse cold bridges and sealing or insulation defects quicker and more efficiently than with any other tool. This results in the following advantages for you:

  1. Ensure building quality and can initiate preventive measures.
  2. Impress with the visual presentation of the quality of your work.



Thermal analysis is an efficient method of detecting structural defects


Identifying mould danger

High quality thermal imaging cameras calculate the humidity value of each measuring point from the externally determined ambient temperature, the air humidity, as well as the measured surface temperature. The humidity palette in the imager then uses the traffic light principle to represent the different risk zones:

Green = no risk

Amber = caution, mould formation possible

Red = mould danger



With thermal imaging you can outline areas at risk of damp before anything is visible to the naked eye


For more details on thermal imaging please visit our website or if you’ve got an enquiry you’d like to discuss, give us a call on 01420 544433 and we’ll be happy to help.

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About Testo Limited

We offer an extensive range of instruments for many parameters and applications including; Temperature, Humidity, Velocity, Gas analysis, RPM, Pressure, Light, pH, Sound. testo instruments are widely used in the following sectors: HVAC-R: heating, ventilation, air conditioning and refrigeration. Process Industry: manufacturing industries, service companies and utilities. Food Sector: including food manufacture, transport, storage, distribution and retail. Thermal Imaging: for building surveys, maintenance, electrical inspections and production monitoring.

Posted on February 24, 2016, in Deals, Electrical, Facilities Maintenance, Facilities management, hEATING, hvac, Industry, Infrared, Latest News, News, Online, plumbers, Plumbers uk, plumbing, Product Launches, Safety, Software, thermal camera, Thermal Imaging, thermography and tagged , , , , , , , , , , , , , , . Bookmark the permalink. 2 Comments.

  1. Great article! I can agree that resolution is one of the most important things when it comes to buying thermal imaging cameras. However, there are many other features that are crucial to this matter, too.

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