TECHNIQUE DETERMINING FLOW RATE OF LIQUID Russian patent published in 2000 - IPC

FIELD: determination of flow rates of dielectric and poorly conducting liquid media with use of electromagnetic flowmeters with independent power supply sources. SUBSTANCE: for determination of flow rate intensity of excited electromagnetic field is adjusted depending on current value of velocity of flow of tested liquid and on dynamics of change of velocity of flow, parameters of tested liquid or parameters characterizing measurement conditions. Adjustment is conducted so that minimum of intensity of excited electromagnetic field is achieved with value of error of information signal specified for given current value of velocity of flow. EFFECT: provision for considerable decrease of energy consumption. 2 cl, 2 dwg