A method and apparatus are set forth for measuring flow velocity of an element of interest in a compound within a pipe. In the preferred and illustrated embodiment, a static magnetic field is imposed on the flowing material of interest. Preferably, a uniform field of finite width is imposed. There is...http://www.google.es/patents/US4629987?utm_source=gb-gplus-sharePatente US4629987 - Method and apparatus for nuclear magnetic resonant measurement of flow velocity
Method and apparatus for nuclear magnetic resonant measurement of flow velocity
