Infrared pyrometer for temperature measurement of objects, emissivity of which depends on wavelength and time

The multiband MBP 98A pyrometer developed for non-contact temperature measurement of objects with unknown and wavelength-dependent emissivity has been presented in this paper.The pyrometer was designed using single thermoelectrically cooled PbS detector of spectral band of 1-2.5 Ilm and 8 narrow-band optical filters.It enables temperature measurement of objects at temperature within a range of 500°C-1200°C and a speed of 75 Hz.It can be used for controlling various industrial-technological processes as well as in research works for testing of classic singleband pyrometers in temperature measurement of objects whose emissivity depends on the wavelength and time.