G - Physics – 01 – J
Patent
G - Physics
01
J
73/112, 73/52
G01J 5/10 (2006.01) G01J 5/60 (2006.01)
Patent
CA 1173273
ABSTRACT A two-wavelength I.R. pyrometer is described which is suitable for monitoring the rapid heating of materials by C.W. lasers or electron beams. The I.R. radiated from the material is separated into two closely adjacent wavelengths and signal values are obtained representative of those wavelengths. Those signal values are then processed through an electronic circuit where the signal value of one of the signals is held substantially constant by a feedback control whilst the other signal value is influenced by approximately the same feedback control applied to the first signal value and wherein the resultant signal values are then processed through a ratio providing means to provide a ratio of one signal value divided by the other. This is then a measure of the temperature of the material.
391850
Beckwith Peter J.
Crane Kenneth
Commonwealth Of Australia
Marcoux & Sher Swabey Mitchell Houle
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