Frequently Asked Questions

Q: What can IR Thermography do for me?

A: Using IR Thermography can reduce downtime by avoiding unplanned shutdowns and by assisting in the timing and planning of scheduled maintenance thus allowing production time to be increased by maximising equipment availability.

Q: What applications can thermography be used for?

A: Electrical Systems:
Loose or high resistance connections
Overloaded circuits
Phase imbalances
Blocked or restricted cooling systems in transformers
High resistance in fuses and switchgear

Motors and Rotating Machinery:
Motor / generator overload
Worn / damaged bearings
Belt / shaft alignment
Conveyor systems

Mechanical Systems:
Refractory lining failure or wear
Insulation missing or breakdown
Boiler seal leakage
Hydraulic, steam and hot water systems
Tank levels and insulation
Belts and pulleys
Pressure and vacuum leaks

Underfloor heating systems surveys
Continuity of insulation
Leaks in flat roofs
Damp ingress
Heating, Ventilation and Air Conditioning (HVAC) systems
Cold storage thermal gain

Veterinary Applications:
Detection of medical problems in horses

Q: What sort of companies use infrared technology?

A: The list of businesses that have benefited from the early detection of thermal imaging is extensive, including:

Food processing & production
Electrical inspection
Paper manufacturing
Automotive quality control
Glass fabrication
Building diagnostics
Iron and steel production
Rubber production
Semiconductor manufacturing

Q: How do cameras detect Infrared?

A: Modern cameras in general use uncooled bolometers. A mid range unit will have a bolometer with a matrix of 320 x 240 pixels for a total of 76,800 dots or pixels. Our professional equipment has a matrix of 640 x 480 pixels giving us a total of 307,200 measurement points! Each pixel, which is sensitive to IR, develops a voltage, depending on how much IR reaches it via special lenses. This voltage is then processed via software and colour palettes are overlaid. The colour represented for each pixel is dependent on the voltage the dot produces. The end result is a picture built up of thousands of pixels. The voltage of each pixel is also calibrated to represent a temperature. An IR camera usually has a selection of colour palettes. In principle, digital and video cameras work the same way.

Q: I have a small Infrared spot gun / camera so why should I use a thermographer with higher level equipment?

A: Would you use a mobile phone camera to take a family photo rather than a high quality camera? Having a relatively small number of pixels, low resolution and small field of view, there would be a higher probability of missing or misinterpreting a fault. These devices are best used for spot checks.

Q: Are Infrared cameras expensive?

A: Relatively - yes. The sophisticated level of technology and the value of use makes them expensive. One really must look at the economics of purchasing an IR camera. There is a lot of economic merit in using an experienced, qualified full time thermographer, delivering a quality service with good equipment at a fraction of the cost of purchasing a camera to be used occasionally by relatively inexperienced operators.

Q: Can thermography be used in brightly lit areas?

A: Yes. Light as we know it in the visible spectrum has no effect on the infrared images.

Q: Will thermography affect the daily routine of my business?

A: No. Infrared Thermography is a non-invasive tool, so there is no need to switch any plant room equipment off. In fact, thermography produces the best results when the system under review is either fully operational or under load.

Latest News

Thermal Imaging Survey - Issue of the Week - April 2016 - Week 4

Things are hotting up on the thermal imaging front (pardon the pun) and we have decided to keep the page updated with an 'Issue of the Week' section!

This week is a good old fashioned electrical fault identified during an electrical thermographic survey at a hospital which was picked up by Stuart Robinson.

This is a main supply to a distribution board where a loose connection was identified. The site engineer was on hand to carry out the repair as directed by Stuart. The second image shows that the repair has been carried out successfully and a major problem was averted!


Stuart Robinson Joins the Pixel Team

In January 2016 we welcomed Stuart Robinson to the team as a Thermographer.

Stuart has a wealth of experience in the construction industry and electrical systems.

He has already settled in well and is a valuable member of our team conducting thermal imaging surveys and compressed air leak surveys.

Stuart in action on an electrical thermographic survey

Thermal Imaging Surveyor Required

JOB TITLE: Thermal Imaging Surveyor

LOCATION: Cheshire Based


SALARY: £20,000 to £34,000 (Depending on Experience)

BENEFITS: Company Vehicle + Mobile Phone + Laptop + Training

COMPANY NAME: Pixel Thermographics Ltd



Pixel Thermographics Ltd are a leading thermographic (thermal imaging) survey consultancy. We carry out a wide range of inspections for our clients which include thermal imaging surveys of electrical & mechanical systems, water leak surveys, building inspections and specialist survey activities for the oil & gas industry. We also carry out additional inspections including ultrasonic compressed air leak surveys and electronic roof leak detection surveys.


More details about our services can be seen on our website



Due to continued demand for our services, we are seeking to recruit an additional thermal imaging surveyor. Full training and coaching will be provided for the right individual to join our small team and you can expect an interesting, challenging and dynamic role. This opportunity would suit someone who is keen to learn new skills, is prepared to work hard and who is prepared to become a key member of the team to develop the business.


Key duties will include:


·         Carrying out thermal imaging surveys nationwide.

·         Carrying out additional inspection activities including ultrasonic & electronic detection.

·         Generating detailed reports utilising specialist reporting software.

·         Adhering to all our health & safety requirements.

·         Undertaking training & certification courses.

·         Discussing suitable survey options with clients and preparing quotations.

·         Involvement with the online development of the business.

·         Administration duties as required.


Training and coaching on all aspects of the role will be provided and it is our aim to provide a long term employment opportunity for the right individual.



Ideally you will have an electrical background but a candidate with a good knowledge of buildings & construction would also be considered.


Training and coaching will be provided on the different types of inspections.


You must be prepared to work some unsociable hours, stay away from home on a regular basis, travel throughout the UK and eventually be able to work well with little or no supervision.


Additional Key Requirements:

·         Full Driving License.

·         Desire to Learn.

·         Highly Computer Literate – Excellent Microsoft Word and Excel Skills.

·         Excellent Communication Skills (Verbal and Written).

·         Physically Fit

·         Ability to Work in Hot & Cold Environments, Work at Height and possibly Offshore.



If this role interests you or you have any questions relating to the opportunity then please email your CV & covering letter or question to us at


Suitable applicants will be contacted for interview.



Get a free quote

We’ll happily come out to your premises or chat on the phone about your needs.

Simply fill in our form.


What is thermography?

Good question, take a look at our introduction and how thermography can help you.