METHOD AND DEVICE FOR MEASURING VOLUME AND MASS FLOW Russian patent published in 2010 - IPC G01F1/60 G01F1/58 

FIELD: physics.

SUBSTANCE: invention is meant for measuring flow of magneto-conducting medium (e.g. water with magnetite particles). An alternating magnetic field B(t) is applied onto a magneto-inductive flowmetre. The actual rise time (τ_ist) before attaining a constant value (B_const) of the measuring magnetic field is determined. The actual rise time (τ_ist) is compared with a given rise time (τ_soll), determined when a stream (Φ_Ref) of standard medium (water) flows through the flowmeter. Based on the difference (Δτ) between the actual rise time (τ_ist) and the given rise time (τ_soll), the measurement error (F) is determined, and the measured actual volume or mass flow (Φ_ist) of the magneto-conducting medium (11) is corrected so as to compensate for error (F).

EFFECT: invention increases accuracy of measuring flow of medium containing ferromagnetic particles, enables to determine content of magnetic material in the medium flowing through the flowmetre.

9 cl, 3 dwg