초록 ▼

A pyrometer for determining the temperature of a surface in the presence of reflected radiation has two infrared radiation sensors, each responsive to different wave length, positioned to receive radiation from the surface. An adjustment factor is developed from sensor response signals when reflecte

A pyrometer for determining the temperature of a surface in the presence of reflected radiation has two infrared radiation sensors, each responsive to different wave length, positioned to receive radiation from the surface. An adjustment factor is developed from sensor response signals when reflected radiation and surface temperatures are the same, and is combined with sensor response characteristics over a range of surface and sensor indicated temperatures to develop a correction factor which when multiplied by the indicated temperature provides the actual surface temperature.

대표청구항 ▼

A pyrometer for measuring a surface temperature of a heated object in the presence of surface emitted radiation and surface reflected radiation originating from a source which is at a different temperature from said surface, and comprising: a first radiation sensor means positioned for receiving and

A pyrometer for measuring a surface temperature of a heated object in the presence of surface emitted radiation and surface reflected radiation originating from a source which is at a different temperature from said surface, and comprising: a first radiation sensor means positioned for receiving and responding to a first wavelength of said surface radiations in order to provide a first signal indicative of said radiations; a second radiation sensor means, positioned to receive radiation generally from a same surface area as the first sensor means, for receiving and responding to a second wavelength of radiation different from said first wavelength in order to provide a second signal indicative of said radiations; altering means, operatively associated with said sensors, for operating on at least one of said first and second signals in order to provide altered first and second signals, such that said altered first and second signals are substantially identical under black body conditions; means, operatively associated with said altering means, for providing an adjustment factor indicative of a difference between said altered signals when not under black body conditions; means, operatively associated with said adjustment factor providing means, for providing a correction factor signal according to said adjustment factor and a surface emissivity factor; means, operatively associated with at least one of said sensors, for providing a signal of indicated temperature, said indicated temperature being equal to said surface temperature under black body conditions; means for receiving and operating on said signal of indicated temperature and said correction factor signal in order to provide an output signal at least representative of said surface temperature; and means for receiving said output signal and indicating said surface temperature.