FIELD: measurement technology. SUBSTANCE: while substance with known density flows over flow tube of Coriolis flowmeter vibrations are excited in tube. Transducers anchored on flow tube measure period of its vibrations and processor of electron measuring instrument computes value of density. If computed value deviates from value of known density of substance beyond permissible limits processor forms measurement error signal. EFFECT: timeliness of detection of calibration coefficient of flowmeter caused by change of cross-section of flow tube or properties of substance flowing over it. 10 cl 12 dwg
