FIELD: instrument industry.
SUBSTANCE: device comprises measuring section provided with inlet and outlet branch pipes. At least one hollow is made in the section surface between the branch pipes. The hollow has curved surface shaped into a chute. The surface of the hollow has two sections whose curvature signs are opposite. The method comprises measuring pressure drop between a point on the smooth surface and a point on the concave surface and determining the flow rate using calibration.
EFFECT: enhanced precision.
2 cl, 1 dwg
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