Drainage system monitoring apparatus

Details Drainage system monitoring apparatus Drainage system monitoring apparatus

1988-12-14

1990-06-19

Williams, Hezron E.

Communications: electrical

Condition responsive indicating system

Specific condition

73 611R, G08B 2100

Patent

active

049357263

ABSTRACT:
This invention is directed to an apparatus or system which is used for monitoring a storm drain system in order to detect the presence of hydrocarbons or the like therein. The apparatus includes a sensor unit which is arranged to float on the surface of the storm drain effluent. A suitable alarm system is connected to the sensor unit to indicate an activation of the sensor unit. The storm drain is, typically, modified to provide a uniform sensing area adjacent to the sensor unit.

REFERENCES:
patent: 3214964 (1965-11-01), Davis
patent: 3762214 (1973-10-01), Bogusz
patent: 3839902 (1974-10-01), Scott et al.
patent: 4549171 (1985-10-01), Akiba et al.
Bock, D. H. et al., Detection of Oil in Sewers. In IEEE Transact. on Geoscience Electronics vol. GE-10, No. 2 Apr. 1972, pp. 119-126.

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