Title:
DEVICE FOR DETECTION OF EFFLUX OF LIGH-SHIELDING LIQUID
Document Type and Number:
Japanese Patent JPS5217891
Kind Code:
A
Abstract:
PURPOSE: The captioned detecting device of high detection accuracy without causing detection errprs owing to environmental changes and capable of making accurate and correct detection regardless to variations in liquid levels, wherein the liquid levels are detected from the changes in the differences in converting photoelectric quantity by the photoelectric convertion elements Cds, Cds2 provided in the upper and lower positions of liquid level.
Inventors:
KOUGA TOKIO
Application Number:
JP8038475A
Publication Date:
February 10, 1977
Filing Date:
June 28, 1975
Export Citation:
Assignee:
NIPPON SHEET GLASS CO LTD
International Classes:
G01N21/59; (IPC1-7): G01N21/02
Domestic Patent References:
| JPS5025592U | 1975-03-24 | |||
| JPS49117087A | 1974-11-08 |
Foreign References:
| US3659943A | 1972-05-02 |