The measurement is based on the ratio of energy received in two neighboring narrowband spectral ranges. This measuring principle eliminates radiation differences due to dust, smoke or dirty windows that affect both wavelengths equally. The target emissivity does not have to be known and parameterized for when the ratio involves ‘graybody emissions’ ie, when emissivity is the same in both wavelengths.
•Emissivity independent measurement for graybody emitters
•Unaffected by intermediate media
•Measurement of small objects
•Fiber optic version for ambient temperatures up to 150 ° C without cooling
•Adjustable measuring distance via focusable lenses