Measuring and testing – Liquid analysis or analysis of the suspension of solids in a... – Lubricant testing
Patent
1977-08-29
1978-09-12
Queisser, Richard C.
Measuring and testing
Liquid analysis or analysis of the suspension of solids in a...
Lubricant testing
73 611R, 250364, 324 65R, G01N 2134, G01N 2708
Patent
active
041127412
ABSTRACT:
In the apparatus disclosed herein, a continuously operative sample intake is traversed along the shoreline at a preselected subsurface level appropriate for picking up effluents emanating from on-shore septic systems. The conductivity and the fluorescence of the sampled water are measured continuously, the wavelength of the fluorescence measured being chosen to determine the presence of aromatic hydrocarbons and detergent whiteners which are present in distinctive proportions in recharged septic effluents. Signal processing means are incorporated for generating an output signal which varies as a function of the conjoint deviation of the two measurements from the values thereof which are representative of background water levels.
REFERENCES:
patent: 2756404 (1956-07-01), Anderson et al.
patent: 3214964 (1965-11-01), Davis
patent: 3250118 (1966-05-01), Johnson, Jr.
patent: 3510648 (1970-05-01), Leger, Jr.
patent: 3842270 (1974-10-01), Gregory et al.
patent: 3849723 (1974-11-01), Allen
patent: 3917945 (1975-11-01), Sema et al.
Counting and Recording Equipment for Coastal and Estuarine Pollution Studies, by Briggs et al., in Proceedings of the Conference on Electronic Engineering in Ocean Technology, Sept. 1970, pp. 15-28.
Brainard II Edward C.
Kerfoot William B.
Environmental Devices Corporation
Queisser Richard C.
Roskos Joseph W.
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