Testboy TV 293 Instrucciones De Empleo página 24

Operation
If the "Individual" degree of emission is selected, press the SELECT/ENTER
button to input the value manually. To do this use the "right" and "left" arrow
buttons to select the figures and the "up" and "down" arrow buttons to define the
respective value. When the input is complete, you must press SELECT/ENTER
again to save the input.
Information
Infra-red energy is radiated from all objects. How much energy is radiated
depends on the actual surface temperature and the degree of emission at the
surface. The measuring instrument records the infra-red energy radiated from
the surface and, based on this data, calculates an approximate temperature
value. Many objects and materials frequently occurring, for example, painted
metal, wood, water, skin and fabric, radiates energy very good and readily
enables very good measurements. For surfaces that feature good radiation
characteristics (a high degree of emission), the degree of emission is ≥ 90 %
(0.90). Shiny surfaces or unpainted metals only have a degree of emission of
< 60 % (0.60). These materials do not have good radiation characteristics and,
thus, only a low emissivity. In order to be able to measure materials with low
emissivity more accurately, the degree of emission must be corrected
accordingly. By adapting the degree of emission, the actual temperature can
normally be calculated more accurately.
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Testboy TV 293