Patent ID: 7259384
Filing Date: 2007-08-21
Classification: G01F,Y10S

Abstract:
1. A sensor assembly adapted to sense a fluid level, comprising: at least one optical fiber having an end portion configured to transmit an optical signal and to receive a reflected optical signal; a moveable float member configured to move in a first direction as the fluid level increases and in a second direction as the fluid level decreases, the float member being operatively positioned relative to the end portion of the at least one optical fiber and being further configured to block the optical signal at a first value of the fluid level, and to allow the optical signal to pass at a second value of the fluid level, wherein the moveable float member includes an opaque portion and an optically-transmissive portion, the moveable float member being configured to block the optical signal when the fluid level is at the first value of the fluid level; and a reflective member positioned opposite the moveable float member from the end portion of the at least one optical fiber and being configured to receive the optical signal from the end portion and to reflect the reflected optical signal toward the end portion.