Abstract: A Coriolis mass flow rate measuring apparatus including at least one elongated and helically configured loop 30 of conduit, a drive mechanism 42 for causing oscillatory movement of a portion of the loop in a direction approximately normal to the direction of flow through the conduit portion and approximately parallel to the central axis of the loop, and one or more detectors 46, 48, 56 for detecting the resulting motion caused by the Coriolis forces exerted on other portions of the loop as a result of the mass flow therethrough and the oscillatory translation thereof.