Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1998-08-31
2000-09-12
Le, Que T.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
250574, 73293, 340619, G01N 2185
Patent
active
06118134&
ABSTRACT:
An optical mass gauge sensor is disclosed comprising a vessel having an interior surface which reflects radiant energy at a wavelength at least partially absorbed by a fluid contained within the vessel, an illuminating device for introducing radiant energy at such wavelength into the vessel interior, and, a detector for measuring the energy per unit area of illumination within the vessel created by the radiant energy which is not absorbed by the fluid.
REFERENCES:
patent: 5065037 (1991-11-01), Finney et al.
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