Arrangement for determining the presence of specific substances

Details Arrangement for determining the presence of specific substances Arrangement for determining the presence of specific substances

1984-04-16

1986-11-11

Howell, Janice A.

Radiant energy

Invisible radiant energy responsive electric signalling

Ultraviolet light responsive means

250301, 356 70, G01N 2159, G01N 2115

Patent

active

046224653

ABSTRACT:
A simple and sensitive arrangement for determining the presence of specific substances in a liquid is provided for determining the presence of oil in water. The arrangement comprises a light source which emits diffused UV light through the liquid to be tested, a detector which receives the UV light, and a processing circuit which is driven with a measured signal from the detector. The processing circuit generates an alarm signal if the measurement signal which increases with intensity of the detected UV light becomes smaller than the predetermined value.

REFERENCES:
patent: 3491234 (1970-01-01), Wiltrout
patent: 3710111 (1973-01-01), Collura
patent: 3731091 (1973-05-01), Rosso et al.
Y. Morita et al., "Shimadzu Organic Pollution Monitor Model UVM-401", Shimadzu Review, vol. 37, No. 4, (Dec. 1980), pp. 259-264.

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