NUCLEAR MAGNETIC FLOWMETER AND METHOD FOR OPERATING A NUCLEAR MAGNETIC FLOWMETER

摘要

A nuclear magnetic flowmeter (1) for determining the flow of a medium flowing through a measuring tube (2), having a magnetic field generator (3) having permanent magnets for generating a magnetic field interfusing the medium over a magnetic field section L M, having a pre-magnetization section L VM located within the magnetic field section Lm and having a measuring device also located in the magnetic field section L M including a coil-shaped antenna (5) with the length L1 serving as a measuring antenna. At least one coil-shaped antenna (5) is provided in the pre-magnetization section L VM for generating a pulse or pulse sequence spoiling the magnetization of the medium in the direction of the magnetic field.