UK Thermography
Predictive & Preventative Maintenance Service

IR Image Gallery


How do infrared images compare to photographs? Place your mouse over any of the photographs below to see how the infrared image looks! To the side of each image is a description of what you are seeing and what remedial action was taken to correct the anomaly. If a thermographic survey had not been conducted these faults would have remained undiscovered and caused power failure to primary circuits or potential equipment fire, resulting in production loss and unnecessary downtime for maintenance teams to identify and correct the fault. Thermal imaging is a proven, non contact method, of finding faults before they find you! We recommend 2 surveys per year, one in summer when high ambient temperatures are present and certain items such as air conditioning and refrigeration is working hard and a second in winter, with a low ambient temperature where heating systems and other parts of the site services are on higher loading. Although we recommend 2 surveys to ensure full site loading coverage, just 1 survey can find many faults you never knew you had. Thermal surveys pay for themselves every time, even if just 1 fault is found, It could be that fault that closes down your site! Our comprehensive thermographic survey reports give you clear identification using both infrared and photographic images. The description and remedial recommendations are accurate and easy to follow. We have been working on control circuits for over 20 years, so we not only now what were looking at, we know how to fix it and recommend the best course of action to take! All of our customers say they have noticed a reduction in downtime due to electrical failures after a survey has taken place!

What's unseen faults are hiding in your equipment?
Give us a call for a quote on providing you with our electrical thermal imaging surveys.



The 3 phase isolator on the image to the left looks ok visually, however, looking with a thermal imaging camera you can see the top yellow phase is showing differential temperature. This fault is caused by an insecure connection on the top yellow phase connection. This fault was corrected by simply tightening the terminal at the time of the thermograhic survey.
The image to the left shows a 3 phase main isolator on a compressor control panel. Substantial bus bar type conductors are attached to the top and all appears well in the visual image. Looking with a FLIR P620 Thermographic Camera you can see clearly that there is a problem with the top right hand side terminal. The terminal was cleaned and tightened which corrected the fault.


The image to the right shows the internal workings of a 12 way 3 phase distribution board. The infrared image shows the 2nd terminal up from the bottom right hand side to have excessive heat. This was caused by an insecure terminal possibly from installation. Although this fault has not  failed or reached a dangerous temperature this heat could increase with load variation and subsequent component failure would occur.
The DIN rail terminals shown in the image to the right appear ok to the naked eye. When the thermal image is displayed you can see the anomaly towards the centre of the image on the top terminal row. Simply tightening this connection corrected this fault & no production was was lost.With over £100,000 per hour in production passing through this production line this would have been an expensive failure. The repair was carried out at the time of the survey saving both engineers time & loss of production.


The top middle crimped connection on the middle contactor in this image to the left was a new installation.
The middle crimp was not secured correctly & subsequently overheating. No obvious fault can be seen without the use of a thermal camera. The terminal was re-crimped and the fault corrected.
If you were to guess looking at this image to the left, you would say the fault was on the 2nd yellow cable from the top left hand side. The thermogram shows it is actually the left hand side terminal 1L1 which is faulty. The discolouration on the 2nd cable along (the coil power) cable is from a previous fault  The left hand terminal was tightened & this corrected the problem.


The image to the right shows the internal workings of a fused switch. the only visual difference is that a different type fuse of the same rating has been used in the bottom carrier. Although this in theory should be ok and in many cases it is, the infrared image shows this is a problem. The bottom fuse is overheating and was operating at over 120 degrees celcius! Why? This fuse is for a different type of loading and is a fast blow fuse not designed for use on equipment with high surge and prolonged high loading. The fuse was replaced with the original type and this corrected the problem.
The fuse carrier in the image to the right uses a bottle type fuse which pushes in between spring clips, over time these clips can weaken especially when the component is subjected to excessive heat. The top middle terminal can clearly be been in the thermogram to be at fault, however due to the excessive heat generated by high resistance this component had to be replaced as tightening the terminal was not enough to correct this fault.

What happens when it goes wrong!

Here is a selection of images taken when the first ever thermographic survey was carried out on some sites. Our premium surveys not only look for abnormal heat, they also focus on the general health of control panels and highlight additional hazards which can be health and safety related, inproper installation of components, insecure equipment, water ingress and much more. All identified faults are photographed and reported to the relevant site person in our premium survey report.

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