FLOWMETER WITH A MEASURING DEVICE IMPLEMENTING A TOMOGRAPHIC MEASURING PRINCIPLE

摘要

A flowmeter for determining the flow of a multi-phase medium through a measuring tube has a first and a second measuring device, one of which operates on a tomographic measuring principle and one of uses a measuring principle based on nuclear magnetic resonance. The first measuring device operates in a different manner from the second measuring device, e.g., using a measuring device operating on the measuring principle of pre-magnetization contrast measurement and having a pre-magnetization section with a constant magnetic field. The magnetic field has at least one component perpendicular to the direction of flow of the multi-phase medium and is generated by using magnetic field generating elements, which are arranged around the measuring tube. Additionally, an assembly for exciting nuclear spin by a RF excitation pulse or a RF excitation pulse sequence is part of the measuring device.

主权项

1. Flowmeter for determining the flow of a multiphase medium flowing through a measuring tube, comprising:
a tomographic measuring device and at least one further measuring device, wherein at least one of the measuring devices comprises a nuclear magnetic resonance measuring device.