Arrangement for determining a medium

Details Arrangement for determining a medium Arrangement for determining a medium

1980-10-20

1982-08-17

Smith, Alfred E.

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

250343, 250351, 378 95, G01J 100

Patent

active

043451519

ABSTRACT:
An arrangement for determining a medium by means of a temperature sensor which is kept at a given excess temperature, in which the power to maintain the given excess temperature is determined, which includes a source of measuring radiation, a source of auxiliary radiation and the temperature sensor being exposed to a ray path of the measuring radiation and the auxiliary radiation, and means for generating a signal representative of a property of the medium, such as its absorptive or reflective capacity, its polarization properties, as well as correlative properties derivable therefrom.

REFERENCES:
patent: 2486622 (1949-11-01), White, Jr.
patent: 3180984 (1965-04-01), Fertig et al.
patent: 3903422 (1975-09-01), Buhrer

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