Patent ID: 6250151
Filing Date: 2001-06-26
Classification: G01F

Abstract:
A device for measuring fluid volume, comprising:a meter housing having an inlet and an outlet through which the fluid flows;at least two inter-engaging screw spindles rotatably mounted within the meter housing and being rotatable in response to fluid flow in an axial direction through the housing;an exciter disc arranged in the fluid flow in the meter housing and connected to one of the at least two inter-engaging screw spindles for rotation therewith, the exciter disc having at least one substantially planar surface and a plurality of magnets arranged thereon with their fields in an axial direction relative to the exciter disc, wherein the meter housing is configured to form a gap and the exciter disc penetrates the gap whereby a region in the meter housing accessible from outside the meter housing is in close proximity to and extends over a portion of the planar surface of the exciter disc; andat least two magnetic-sensitive detectors disposed in said region of the meter housing proximate to and spaced from the exciter disc, for cooperating with the magnets of the exciter disc for producing a signal representing rotation of the exciter disc, wherein said at least two magnetic sensitive detectors are accessible in said region from outside the meter housing.