Photocell and quick attach clamp

Details Photocell and quick attach clamp Photocell and quick attach clamp

1992-08-04

1994-01-25

Hannaher, Constantine

Radiant energy

Invisible radiant energy responsive electric signalling

Ultraviolet light responsive means

G01J 504

Patent

active

052818233

ABSTRACT:
A submersible photocell for detecting ultraviolet light in disinfection apparatus including a quartz jacket capable of transmitting ultraviolet light and a fluorescent material sensitive to ultraviolet light at a wavelength of about 253.7 nm and which produces an infrared secondary emission having a wavelength of about 730-735 nm upon absorption of ultraviolet light. The photocell also includes a photoconductor sensitive to the secondary emission light, is located adjacent the fluorescent material and is capable of varying conductance of electricity upon absorbing light having a wavelength of about 730-735 nm from the infrared secondary emission. The photocell further includes electrically conductive wiring connected to the photoconductor and extending outwardly of the jacket at its remote end. Also, the photocell includes a silicone sponge filler positioned adjacent the photoconductor and around the wiring, together with a nonreactive, non-outgassing ultraviolet light resistant potting compound located adjacent the filler and surrounding the wire to tightly seal the remote end of the jacket from liquids.

REFERENCES:
patent: 3062958 (1962-11-01), Warner
patent: 4017734 (1977-04-01), Ross
patent: 4061922 (1977-12-01), Last
patent: 4103167 (1978-07-01), Ellner
patent: 4272679 (1981-06-01), Blades
patent: 4467208 (1984-08-01), Muller et al.
patent: 4727255 (1988-02-01), Monier et al.
patent: 4989215 (1991-01-01), Winik

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