FIELD: measurement technology. SUBSTANCE: ultrasonic distant level indicator has receiving-radiating piezoconverter manufactured in the form of sphere, reflector having shape of concave spherical mirror in which focus piezoconverter is placed, electronic measurement circuit. Upper hemisphere of piezoconverter is fitted with absorber. Diameter of sphere of piezoconverter is not less than two wavelengths. EFFECT: increased measurement accuracy. 1 dwg
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