METHODS AND APPARATUS FOR OBSERVING VESSEL CONTENTS

摘要

A method for observing a change in one or more parameters of a flowable material in a vessel is disclosed, the method comprising transmitting an ultrasound signal into a vessel containing a flowable material; observing a change in the ultrasound signal after it has passed through the flowable material; and, relating the change in the ultrasound signal to the change in one or more parameters of the flowable material.