Photocell and quick attach clamp
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United States of America Patent
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Jan 25, 1994
Grant Date -
N/A
app pub date -
Aug 4, 1992
filing date -
Aug 4, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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