Water pollution monitor

Details Water pollution monitor Water pollution monitor

1975-03-11

1976-08-10

Queisser, Richard C.

Measuring and testing

Liquid analysis or analysis of the suspension of solids in a...

Content or effect of a constituent of a liquid mixture

73560, G01N 2902

Patent

active

039734307

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.

REFERENCES:
patent: 3359788 (1967-12-01), Colvin
patent: 3710615 (1973-01-01), Johnson et al.
patent: 3789655 (1974-02-01), Passeri
patent: 3791200 (1974-02-01), Hayre
patent: 3892127 (1975-07-01), Cirulis et al.
Zacharias, E. M., Process Measurements by Sound Velocimetry, in Instr. and Control Systems, pp. 112-113, Sept. 1970.

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