FIELD: physics.
SUBSTANCE: method includes, by using a known property of electroacoustic radiators, changing the ratio of the values of the active and reactive components of radiation impedance thereof in accordance with fluctuations of characteristics of the medium - density, temperature and pressure. Therefore, by controlling the ratio of said values, information on characteristics of the medium and their changes, particularly accompanying the pumping of liquids in pipelines, can be obtained. During operation of the generator on a complex load, said ratio is uniquely characterised by phase shift between voltage applied to the radiator and current consumed by the radiator. Therefore the phase shift is selected as the monitored parameter in the present method of monitoring flow rate and volume of pumped liquid media in pipelines.
EFFECT: simple design of devices using said method with considerable reduction of expenses on production, installation and operation, which improves reliability of the latter and enables to realise a mobile version of the device overall.
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