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Infrared line cameras for industrial temperature measurement
mechanical scanners for one-dimensional beam deflection. Principle disadvantages of these line ..... This basic camera system was also used for IR-2D camera ...
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18
timesPracticalApplicationsof Pyrometers
1 .1 Introduction
When describingdifferent types of pyrometers in Chapters9 and 10 itwas assumed that theyoperatein idealconditions.Pyrometerreadings,which aremeasurementsof thetrue
targettemperature,Tt, are stronglyinfluencedby real,practical,industrialoperating conditionsas shown ina simplifiedway inFigure11.1.These measurements,which must
accountfortargetemissivity, E (Tt)or E,L (T),
intheenvironmentofthesurroundingwalls of temperature,Tom with emissivity,
or,sxw (TW ),are taken in thepresenceof pollutedatmosphereoftemperature,Ta,havingtheequivalentemissivity,
and an absorptioncoefficient,aa(T a).
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