Method and apparatus for measuring concentration of suspended oi

Details Method and apparatus for measuring concentration of suspended oi Method and apparatus for measuring concentration of suspended oi

1980-04-21

1982-10-05

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

356 70, 350 9633, G02B 516

Patent

active

043529836

ABSTRACT:
A method of quantitatively monitoring suspended oils in water combining the technologies of reversed-phase liquid chromatography and fiber optics is shown. A specially treated optical fiber collects and concentrates suspended oils on its surface so that optical transmission through the fiber is related to the contaminant concentration. The transmitted light from a treated optical fiber is detected by a photodiode and photocurrent is passed through an amplifier to give an electronic signal. The electronic signal is either recorded or indicated or generates a control signal whereby the light signal is translated into a value that corresponds to the concentration of oils suspended in water. To be sensed by the sensor cell, the fluid containing suspended oils is brought from a storage means to a reservoir and forced through the sensor cell by fluid pressure.

REFERENCES:
patent: 4159420 (1979-06-01), Tsunoda
patent: 4270049 (1981-05-01), Tanaka et al.

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