Fiber optic level alarm

Details Fiber optic level alarm Fiber optic level alarm

G - Physics

01

F

73/173, 73/59

G01F 23/02 (2006.01) G01F 23/292 (2006.01)

Patent

CA 1222395

FIBER OPTIC LEVEL ALARM ABSTRACT OF THE DISCLOSURE A device for determining the level of water and/ or steam in a boiler is disclosed. The device is a liquid level gauge (10) of the Blackburn type and utilizes multiple optical fibers (44) to intercept the light that passes in a relatively straight path through a cross passage (16) in the body (12) of gauge (10). Due to the difference in the indices of refraction for steam and water, the optical fibers (44) intercept the light when steam is present in the gauge (10) but do not intercept the light when water is present.

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