Infrared Sensor

M77S / M78 "Infraducers" series also utilizes the 2-color principle, in which the temperature measurement is made by two independent detectors with different but adjacent narrow band infrared filters. By ratioing the output of these two detectors, the temperature measurement becomes independent of emissivity and a number of other factors that during the measurement degrade the accuracy of conventional instruments. Thus, temperature measurement with the M77S/78 are: