FIELD: measurement technology.
SUBSTANCE: method of measuring brightness temperature is based upon method of disappearing filament while comparing brightness of filament of standard lamp of pyrometer and object. Temperature of object is found from value of filament heater current after brightness of filament and object are brought to equality. Brightness of object is registered by means of multielement photoreceiver. Filament heater current is applied to reference lamp at pyrometer calibration mode only. Mode of calibration is performed upon receiving signal from device being sensitive to change in temperature. Image of filament of reference lamp is projected onto photosensitive surface of photoreceiver in the mode of calibration only.
EFFECT: improved precision of measurement of brightness temperature.
1 dwg
