Thermal imaging imager is
something that everyone has seen in their life in movies and documentary but is
not aware of its real name that is thermal imaging imager. In movies you would
have definitely seen the imagers that tell about the presence of humans or
animals in dark by sensing their body heat. Actually, these imagers transform
heat or thermal energy in to color or visible light so that a particular
scenario or an object can be analyzed. In this process, the image that is
derived is known as thermo gram and the analysis of this image is done through
a process called as thermograph.
Basically many companies
manufacture these thermal imaging imagers and fluke is one of the leading ones
in its manufacturing. There are many variations or different models available
such as TI400, TI32, TI300, TI125, 43B and many more. Now to understand which
model would be the most suited one for you, you need to understand the working
of the imager. As you would be already aware that all objects radiate some
amount of thermal energy and the imager detects this energy with the help of a
sensor called micro bolometer. Basically, this micro bolometer is found in all
the models such as TI132 or TI125 and is actually an arrangement of pixels.
These pixels are made using a lot of different kind of compounds and the most
common ones are vanadium oxide and amorphous silicon.
When the thermal energy of an
object is sensed by the fluke thermalimager, the material of the pixels gets heated and this leads to a change
in the electrical resistance. Consequently, the resistance is measured and the
value obtained is then converted in to a temperature value. Once the value has
been obtained, then the next step is the generation of a thermo gram. Each
temperature value is given a color or a shade and then accordingly the thermo
gram is prepared.
