Chimney stack thermography

June 13, 2016By Bob BerryGeneral

Email question received; I have some chimney stacks to inspect with thermography. Both stations are thermal coal. One station has two stacks that were built-in 1976-1980. The two stacks are 177 metres high. The other station has one stack and was built-in 1992/93 and is 250 metres high. I have been asked to identify areas of … Read More

Working with low emissivity busbars

June 6, 2016By Bob BerryGeneral

Recently I have come across quite a few people that work with low emissivity materials like copper busbar. Generally they are under the impression that so long as they keep away exact temperature measurement then they will be ok. They just stick to looking for thermal gradients. In fact, materials like copper busbar have such a low emissivity … Read More

A6703sc images

May 30, 2016By Bob BerryGeneral

There are a couple of images below taken with an A6703sc, both images are of a £2 coin, one with a 50mm lens, the other with a 1X microscope lens.

Why do some things glow when they are hot?

May 25, 2016By Bob BerryGeneral

Objects begin to glow when they become incandescent. Incandescence is a name given when objects begin emitting thermal energy in the visible part of the electromagnetic spectrum. This usually starts at about 500-525 degrees C. As an object heats up two things happen. Firstly they emit more radiated energy. Secondly, the peak wavelength of the … Read More

Building thermography in the rain

May 20, 2016By Bob BerryBuilding thermography

Can you carry out thermography surveys of buildings when it is raining? I have often been asked this. If it rains, the external surfaces can be wet/damp. This causes evaporative cooling over the damp surface and this cooling can mask problems. For this reason it is best not to conduct surveys in the rain. Reports … Read More