2. Draught Finder Trevor Clark Qualified Thermographer
Non Destructive Testing
Member of UK Thermography Association

3. 7. What is Infrared Imaging ?
Infrared Thermal Imaging Inspections
7. What is Infrared Imaging ?
Infrared Light
Infrared light or thermography is the use of an infrared imaging and measurement camera to "see" and "measure" thermal energy emitted from an object.
Thermal, or Infrared Energy, is light that is not visible because its wavelength is too long to be detected by the human eye; it's the part of the electromagnetic spectrum that we perceive as heat.
Unlike visible light, in the infrared world, everything with a temperature above absolute zero emits heat.
Even very cold objects, like ice cubes, emit infrared!

4. What is Infrared Imaging
Infrared Thermal Imaging Inspections
What is Infrared Imaging
Infrared Imaging
The higher the object's temperature, the greater the IR radiation emitted. Infrared allows us to see what our eyes cannot. Infrared thermography cameras produce images of invisible infrared or "heat" radiation and provide precise non-contact temperature measurement capabilities.
Nearly everything gets hot before it fails, making infrared cameras extremely cost-effective, valuable diagnostic tools in many diverse applications.
As industry strives to improve manufacturing efficiencies, manage energy, improve product quality, and enhance worker safety, new applications for infrared cameras continually emerge.

5. What is Infrared Imaging
Infrared Thermal Imaging Inspections
What is Infrared Imaging
How Does an IR Camera Work?
Infrared Energy Detection
An infrared camera is a non-contact device that detects infrared energy (heat) and converts it into an electronic signal, which is then processed to produce a thermal image on a monitor.
From a PC temperature calculations can be made.

6. What is Infrared Imaging
Infrared Thermal Imaging Inspections
What is Infrared Imaging
How Does an IR Camera Work?
You will have seen or operated an Infrared Thermometer, you point at the object & see a laser light indicating the point at which the temperature is being measured, one pixel.
Now imagine having 19,200 (aligned 120 x 160) infrared thermometers pointing at the object, attach these to a computer to process into a thermal picture, this in essence is what an Infrared Thermal Camera does.
The best Infrared cameras provide a picture with 297,600 pixels, in which each pixel is measuring a temperature.
Generally we use a camera with between 19,200 & 76,800 pixels.
Cost around £2 - £12k as opposed to £30k for the best specialist IR cameras

7. What is Infrared Imaging
Infrared Thermal Imaging Inspections
What is Infrared Imaging
The Infrared Colour Palette
Generally the Infrared technician works with a Grey Scale palette.
This is because it is easier to focus the infrared camera.
Left – Visible Image
Right – IR Grey Scale Image
Below – IR Coloured Images
All the same as Grey Scale but different colour palette

8. What is Infrared Imaging
Infrared Thermal Imaging Inspections
What is Infrared Imaging
The Infrared Colour Palette
Once saved in the camera the images can be downloaded into Special Software programmes for manipulation;
Enhancement of the details held within the images.
Change to colour palette to bring out anomalies
Additional temperature information
Bring together multiple images into a panorama image
This image is made up from several separate IR images stitched together to make a panorama

9. Powerful & Accurate! So many uses;
Infrared Thermal Imaging Inspections
Why Use Infrared?
Advantages of Non-Contact Thermography
1. Safety – Safe inspection of operating plant such as electrical systems, power can be left on during inspection. No disruption to work flow.
2. Remote – target can be inaccessible to contact instruments or in motion. High ceilings, no ladders required.
3. Non-Intrusive – some materials can be damaged by contact or could change temperature with contact.
4. Measurement Speed – objects that are changing rapidly in temperature or moving can be measured. F1 & Superbikes!
So many uses;
Powerful
& Accurate!

10. Thermal Imaging is a great tool for a technician
Infrared Thermal Imaging Inspections
Infrared technology provides us with a “6th sense”
Infrared allows a trained operator to “see” what we cannot normally see with our eyes.
It is rarely just a matter of simply turning up and pointing the camera in right direction.
Which will establish where the problem actually is.
With an increase in temperature and while we have cold dry conditions outside.
Thermal Imaging is a great tool for a technician
- but it is only a tool !

11. The box indicates the thermal image size
Infrared Thermal Imaging Inspections
EXAMPLE
Visible Image
Thermal Image
The box indicates the thermal image size
We take two images, one visible, one thermal.
Generally, any anomaly is apparent as we view the picture on the cameras screen
The IR image holds high volumes of temperature data – a very large file!

12. We provide a complete report including photo’s for fast rectification.
Infrared Thermal Imaging Inspections
We are available to conduct Thermal Inspections on virtually anything!
In fact anywhere there is a temperature difference – we can find the problem, QUICKLY!
We provide a complete report including photo’s for fast rectification.

13. Infrared Thermal Imaging Inspections
If air is invisible, how do you find leaks in buildings?
To “see” the air leakage area we use an
Infrared Camera.
This technique is used when the building is under “Negative” pressure
It is quick, accurate and non-destructive, with minimal disturbance.

14. Infrared Thermal Imaging Inspections
The Power of Combining an Air Tightness Inspection with an Infrared Camera
Consumer Unit
Before fan is switched on
Yes, there is a problem …
But within 5 minutes of fan running …
We can now “see” just how big the problem might be. A much clearer “picture” of what is happening

15. Infrared Thermal Imaging Inspections
EXAMPLE Images
Light Fitting
Air Leak via cable entry

16. Infrared Thermal Imaging Inspections
EXAMPLE Images
Ceiling Rose
Air Leak via cable entry

17. Infrared Thermal Imaging Inspections
EXAMPLE Images
Note how lino is lifting
Lino is fixed at this joint
Flooring
Air Leak via Gaps in floor boards
Can you see the gaps in floor boards?

18. Infrared Thermal Imaging Inspections
EXAMPLE Images
What’s the problem?
Missing Insulation

19. Infrared Thermal Imaging Inspections
EXAMPLE Images
What’s the problem?
Air Leak & Thermal Bridge

20. Infrared Thermal Imaging helps you find potential Problems – QUICKLY !
Infrared Thermal Imaging Inspections
Infrared Thermal Imaging helps you find potential Problems – QUICKLY !
1. Building Thermography
2. Air Leakage
3. Water Leakage Detection
4. Electrical Distribution Boards
5. Flat Roof Leaks
6. Damp Inspections
7. Insulation - Missing or Slipped
8. Energy Audits
9. Moisture
10. Mechanical Inspections
11. Water damage to external structure
12. Pre-Purchase & Pre Sale House Inspection
13. Thermal Bridges & Thermal Bypass
14. Energy Losses
15. Condensation
16. Bearings & Belt Alignment
In fact anywhere there is a temperature difference !
If you think you may have a similar problem to the samples above
Call us to discuss and we’ll tell you if we can help

21. Infrared Thermal Imaging Inspections
Please see our other Slide Presentation’s in this series . . .
“Sample IR Images”
“Thermal IR Inspections”
…. for further examples of how this technology can help you reduce your maintenance costs
Be ‘Pro-Active’ and start an inspection regime where you can identify potential problems early and avoid an expensive SHUT DOWN
Call Trevor now on to discuss how an
Infrared Inspection could SAVE YOU MONEY