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Primary Examiner: Queisser, Richard C.
Assistant Examiner: Roskos, Joseph W.
Attorney: Samuelson & Jacob

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Title: Water pollution monitor

Abstract: A system for detecting the concentration of hydrocarbons (petroleum products) or other pollutants in water having a differential sound velocimeter which compares the velocity of sound in the liquid under study with the velocity of sound in the liquid (largely water) from which the oil or other pollutant has been separated by mechanical and/or solvent extraction means. A suitably calibrated frequency-to-analog converter is utilized to indicate the amount of the oil concentration and/or shutdown the water transporting system if the concentration exceeds a predetermined value.

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Inventors: Cirulis, Uldis (Midland Park, NJ, US)
Zacharias, Jr., Ellis M. (Ridgewood, NJ, US)

Application Number: 557393
Filing Date: 1975-03-11
Publication_date: 1976-08-10
Assignee: Process and Pollution Controls Company (Tulsa, OK)
Primary Class(es): 73/61.49 73/61.59, 73/597
Other Classes:
US Patent Ref:

3359788	Dec, 1967	Colvin	73/61.
3710615	Jan, 1973	Johnson et al.	73/61.
3789655	Feb, 1974	Passeri	73/24.
3791200	Feb, 1974	Hayre	73/61.
3892127	Jul, 1975	Cirulis et al.	73/61.

Other Refs: 784,146

Oct, 1957	UK

Other References: Zacharias, E. M., Process Measurements by Sound Velocimetry, in Instr. and Control Systems, pp. 112-113, Sept. 1970.