NUCLEAR-MAGNETIC FLOWMETER Russian patent published in 1999 - IPC

FIELD: chemical, oil refining, and oil extraction industries. SUBSTANCE: flowmeter designed to measure great amount of liquids flowing at high pressure has modulating coils, flow metering section placed between polarizer magnet poles and analyzer, time detector, and data processing and display unit. Flow metering section is, essentially, bank of several parallel tubes uniformly distributed over sectional area and made of vacuum-tight alumina ceramics; tube inner diameter is 20 mm. Total flow section area of bank tubes is equal to that of feed pipeline connected to tubes through coupling sleeves. Provision is made for eliminating tube deformation in the course of meter operation. EFFECT: improved reliability of device in the environment of chemically active media and high temperatures. 2 cl, 3 dwg