FIELD: measurement technology. SUBSTANCE: invention is meant for measurement of flow rates with variable level. Device for implementation of method has fluted body 1 with side walls 2, 3, receiving-transmitting transducers 4, 5, 6, 7, 10, 11, device 8 measuring rate and device measuring level, reflector 9, clamping fixture. EFFECT: simplified design, enhanced operational reliability. 7 cl, 5 dwg
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