Know your IR window transmittance(13/10/2011)
When taking radiometric thermal images it is important to know what variables in the external environment, such as reflection and emissivity, can lead to possible measurement errors. But when thermographers use IR windows, improper window transmission compensation can easily affect apparent temperature and delta T calculations by 30% or more and that must be factored in too. IRISS tells you how to avoid the pitfalls in part four of its Ten Things To Know About IR Windows.