Ultraviolet radiation sensor for use in liquid purification syst

Details Ultraviolet radiation sensor for use in liquid purification syst Ultraviolet radiation sensor for use in liquid purification syst

1978-03-20

1980-05-06

Smith, Alfred E.

Radiant energy

Invisible radiant energy responsive electric signalling

Ultraviolet light responsive means

250435, 250455, G01J 142, G01N 2126, G01N 2100

Patent

active

042019168

ABSTRACT:
An ultraviolet radiation sensor for use in a liquid purification system senses ultraviolet radiation present in an incident beam containing ultraviolet and visible radiation and includes a beamsplitter which reflects ultraviolet radiation and transmits visible radiation. The reflected ultraviolet radiation impinges on a glass plate having a phosphor layer which emits visible radiation. The visible radiation emitted impinges on a photocell which is connected to an electrical meter and thereby provides a measure of the ultraviolet radiation present. The visible radiation transmitted through the beamsplitter enables visual monitoring of a source of radiation while simultaneous ultraviolet measurements are made.

REFERENCES:
patent: 2648774 (1953-08-01), Whitlock
patent: 3247413 (1966-04-01), Bisso et al.
patent: 3562520 (1971-02-01), Hippen
patent: 4038547 (1977-07-01), Hoesterey

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