Magnetostrictive position sensing probe with waveguide referenced to tip

摘要

A magnetostrictive position sensing device is disclosed where a probe assembly surrounding a waveguide (5) is anchored at one end to the bottom (57) of a tank (40) and terminates in a transducer assembly attached to the top of the tank (40). The probe assembly compensates for differential coupling between two sections of the probe assembly. The sensing device also includes one or more fluid level floats (25) movably surrounding a portion of the probe.