Nuclear magnetic flow meter

摘要

The flowmeter (2) has a measuring tube (4) through which a multiphase medium (3) is flowable, and which has an upstream end connectable to an inlet tube (6) and a downstream end connectable to an outlet tube (7). A medium bypass (8) connected to the measuring tube has a bypass tube (9), an inlet valve (10) and an outlet valve (11). The flowmeter has calibration operation mode in which the bypass tube is connected to the inlet tube and to the outlet tube and flow through the measuring tube is stopped for calibration of the flowmeter, all flow passing through the bypass tube. An independent claim is also included for a calibration method for calibrating a nuclear magnetic flowmeter.