Patent ID: 9593978
Date: 2017-03-14
CPC Classifications: G01F

Claim:
1. A device for measuring a mass flow rate of a fluid, comprising a housing with two hollow pipes communicating with one another and having a fluid inlet and a fluid outlet; an electromagnetic excitation unit exciting vibrations in said hollow pipes of said housing; two electromagnetic adapters associated correspondingly with said two pipes of said housing and providing signals which are proportional to a speed of vibrations of said pipes of said housing; and an electronic block connected with said electromagnetic excitation unit and with said electromagnetic adapters and determining a mass flow rate of a fluid, determining a correction associated with inclusion in the fluid and constituted by a ratio of a voltage amplitude of said adapters and a voltage amplitude of excitation of vibrations by said electromagnetic excitation unit, and determining a corrected mass flow rate of the fluid based on said determined mass flow and said determined correction, wherein said electronic block is configured to determine said correction, in which an argument of a function of said correction is: wherein a, b, c, d are constant coefficients which depend on type and size of sensors, which is a relative mass flow rate, G max-′ is a maximum flow rate, n is degree of g equal to 1.43.