Fiber optic fuel and liquid gauge

Details Fiber optic fuel and liquid gauge Fiber optic fuel and liquid gauge

G - Physics

01

J

73/53

G01J 1/00 (2006.01) G01F 23/292 (2006.01)

Patent

CA 2034607

FIBER OPTIC FUEL AND LIQUID GAUGE ABSTRACT OF THE DISCLOSURE A fiber optic fuel or liquid level gauge is disclosed which determines the liquid level by measuring the amount of light loss due to evanescent transfer to the fuel or liquid. An optical fiber is supported in the fuel or liquid tank, with a first end adjacent the highest possi- ble liquid level to be measured with a reflector at the first end. The optical fiber extends downwardly through the tank, and its second end is connected to a light source for injecting light into the fiber. The intensity of the input light is compared to the intensity of light reflected from the first fiber end, and the liquid level is calculated from the light loss. The gauge has very high reliability since it has no moving mechanical parts.

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