Abstract: Flow measurement of hydrogen density, volumetric concentrations, and longitudinal relaxation times and transverse relaxation times have all n components in pairs different to each other. The method has the steps of: enclosing a mixture inside a probe volume and polarizing the mixture with a magnetic field; measuring the mixture enclosed inside the probe volume in terms of its longitudinal or transverse relaxation behaviour by means of pulsed electromagnetic waves at least n times with a different volumetric share of its components to measure at least n different relaxation curves; obtaining the relaxation times from the relaxation curves; obtaining the thermal equilibrium magnetizations M0 of the individual components from the relaxation curves; and correlating yielded thermal equilibrium magnetizations M0 of the individual components to calculate the hydrogen densities and the volumetric share of the components for each relaxation curve.

Abstract: Flow measurement of hydrogen density, volumetric concentrations, and longitudinal relaxation times and transverse relaxation times have all n components in pairs different to each other. The method has the steps of: enclosing a mixture inside a probe volume and polarizing the mixture with a magnetic field; measuring the mixture enclosed inside the probe volume in terms of its longitudinal or transverse relaxation behaviour by means of pulsed electromagnetic waves at least n times with a different volumetric share of its components to measure at least n different relaxation curves; obtaining the relaxation times from the relaxation curves; obtaining the thermal equilibrium magnetizations M0 of the individual components from the relaxation curves; and correlating yielded thermal equilibrium magnetizations M0 of the individual components to calculate the hydrogen densities and the volumetric share of the components for each relaxation curve.

Abstract: An apparatus and method for determining the individual mass flow rates of a multi-component flow. Individual components of the multi-component flow have different products of longitudinal relaxation time and flow velocity. Two or more arrangements of magnets and flow sensors are arranged along a pipeline. A static magnetic field is imposed on the flow. The linear movement of the flow then generates a multi-exponential gain of magnetization. By interrogating the flow at several positions, the magnetization and velocity is measured simultaneously in different positions. The multi-exponential gain of magnetization and determination of the equilibrium magnetization of each component thermal equilibrium can then be determined. The mass flow rates in the individual components can then be determined.