Patent ID: 8943901
Filing Date: 2015-02-03
Classification: G01F

Abstract:
1. A system comprising: a flow meter having a housing that defines a chamber having a fluid inlet and a fluid outlet and having a first gear and a second gear installed within the chamber, the first gear intermeshing with the second gear so that the first gear and the second gear rotate together in response to fluid flow through the chamber, and at least one of the first gear and the second gear having a detectable area for detecting a rotational position of the first gear and the second gear; a first non-contact sensor configured to generate a first detection signal and to sense the detectable area when the first gear and second gear are in a first range of rotational positions, the first detection signal indicative of a position of the detectable area relative to the first non-contact sensor; a second non-contact sensor configured to generate a second detection signal and to sense the detectable area when the first gear and second gear are in a second range of rotational positions, the first and second ranges of rotational positions being different, the second detection signal indicative of a position of the detectable area relative to the second non-contact sensor; and a controller operatively connected to the first non-contact sensor and the second non-contact sensor and configured to: