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Title:
Photodetector
Document Type and Number:
WIPO Patent Application WO1998035209
Kind Code:
A3
Abstract:
A photodetector for detecting photo intensity through a liquid comprises a body (15), which defines a chamber (17) that is open at one end, a photosensor (14) mounted to the body and arranged to sense light entering the chamber (17) through its open end, a layer of air being disposed in the chamber between the photosensor and the open end of the chamber. The layer of air forms a barrier between the photosensor (14) and the liquid and thus slime and other matter is unable to build up in front of the photosensor.

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Inventors:
SNOWBALL MALCOLM ROBERT (GB)
Application Number:
PCT/GB1998/000403
Publication Date:
September 17, 1998
Filing Date:
February 09, 1998
Export Citation:
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Assignee:
WATER RECOVERY PLC (GB)
SNOWBALL MALCOLM ROBERT (GB)
International Classes:
G01N21/15; (IPC1-7): G01J1/04; C02F1/32
Foreign References:
EP0456202A21991-11-13
US5493124A1996-02-20
DE3827752A11990-02-22
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