Testboy TV 325 Mode D'emploi page 39

Emissivity
The emissivity is a value that is used to describe a material's energy radia-
tion characteristic. The higher this value, the higher the ability of the material
is to send out radiation. Many organic materials and surfaces have emissivity
of approximately 0.95. Attached is a list of the emissivity values of several
materials. Metallic surfaces or shiny materials have low emissivity. There-
fore, the Testboy
this adjustable emissivity setting feature, we do not recommend taking
measurements of shiny surfaces such as stainless steel. You will get more
precise measured values if you blacken or tape over the surface to be
measured. Measurements cannot be made through transparent surfaces,
like through glass for example. You will actually measure the surface tem-
perature of the glass instead.
Setting the emissivity
Press the MODE key until "IEI" appears in the lower display row. The re-
quired emissivity value can now be set using the up and down keys.
Press the MODE key to go back to the normal measuring mode.
®
Testboy TV 325
®
TV 325 is fitted with an emissivity-setting feature. Despite
Emissivity
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