Nuclear magnetic flowmeter

摘要

A nuclear magnetic flowmeter with a measuring tube through which a multiphase medium can flow and which can be connected to an inlet tube which is located in the flow direction of the medium upstream of the measuring tube and to an outlet tube which is located in the flow direction downstream of the measuring tube. The nuclear magnetic flowmeter is, first of all, characterized essentially in that a medium bypass is assigned to the measuring tube, that the medium bypass includes a bypass tube, an inlet valve and/or an outlet valve and that, for a calibration operation, the bypass tube, on the one hand, can be connected to the inlet tube, and on the other hand, to the outlet tube, specifically via the inlet valve, via the outlet valve or via the inlet valve and via the outlet valve.

主权项

1. A nuclear magnetic flowmeter, comprising:
a measuring tube through which a multiphase medium is flowable, an upstream end of which is connectable to an inlet tube and a downstream end of which is connectable to an outlet tube, and a medium bypass connected to the measuring tube comprising a bypass tube, and at least one of an inlet valve and an outlet valve, thus wherein the flowmeter has a 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, and wherein the flowmeter has a normal operation mode in which measurement operation of the flowmeter allows the medium to flow from the inlet tube via the inlet valve into the measuring tube and from the measuring tube via the outlet valve into the outlet tube and in which no medium by passes the measuring tube, there being no flow through the medium bypass.