Temperature measuring apparatus

Details Temperature measuring apparatus Temperature measuring apparatus

1984-03-15

1985-12-31

Yasich, Daniel M.

Thermal measuring and testing

Temperature measurement

In spaced noncontact relationship to specimen

250339, 374127, 374128, G01J 530

Patent

active

045617864

ABSTRACT:
In the temperature measuring apparatus disposed herein, a first intermediate output signal is obtained which is a function of the ratio of the brightness of a target at two different wavelengths and a second intermediate output signal is generated which is a function of the brightness of the target at a single wavelength. The two intermediate output signals are combined in preselectable proportion to yield a temperature output signal which is relatively insensitive to target surface characteristics.

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patent: 3539807 (1970-11-01), Bickel
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patent: 3828173 (1974-08-01), Knepler
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patent: 3922550 (1975-11-01), Crowley et al.
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patent: 4045670 (1977-08-01), Anderson
patent: 4143971 (1979-03-01), Levy et al.
patent: 4421411 (1983-12-01), Ida
patent: 4464067 (1984-08-01), Hanaoka
patent: 4466748 (1984-08-01), Needham

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