Oil concentration detector

Details Oil concentration detector Oil concentration detector

G - Physics

01

N

73/59

G01N 21/00 (2006.01) G01N 21/53 (2006.01) G01N 33/18 (2006.01) G01N 33/28 (2006.01)

Patent

CA 1104370

OIL CONCENTRATION DETECTOR ABSTRACT OF THE DISCLOSURE A system for determining the concentration of oil in a mixture of oil and water including an aligned photocell and a displaced photocell spaced therefrom to receive direct and reflected and/or refracted light through a scatter cell from a laser. A logarithmic amplifier is connected from the aligned photocell because a logarithm of the output thereof is a linear function. The displaced photocell output is essentially linear over a typical range above 200 parts per million (ppm). The output of the logarithmic amplifier is essentially linear below about 200 ppm. The linear portion of each output is combined by a switch when the logarithmic amplifier output passes through a selected threshold level.

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