%0 Journal Article %T Non-Invasive Methods of Liquid Flow Expenditure Monitoring Using Overhead Transducers Taking into Account Deposits in Pipelines %A Popova, P.V. %K ultarsonic flowmeter, pipe line inspection, flow rate measurement, overhead piezoelectric transducer, debris %J NDT World %D 2020 %N 23 %P 3 %I LLC SVEN