Sometimes Coriolis flow meters are referred to as just “Coriolis Flow Meters” and sometimes they also are referred to by the manner of measurement principle that the flow meter technology is using. This can lead to them also being referred to as “Coriolis mass flow meters”. There are two types of measurements that a flow meter can deliver. One is a measurement of mass, and the other is a measurement of volume.
Understanding the difference between mass and volumetric measurement can be complicated in nuance. To oversimply it, a general way to think about it is that mass measurements express the quantity of matter (relative weight) and volumetric measurements express the amount of space the media takes up. Volumetric measurements are more affected by certain process variables like temperature.
For some reason, it is common practice to refer to both Coriolis flow meters and thermal flow meters with the term “mass” included in the title, while other flow meter technology types are rarely referred to with “volumetric” in how people refer to them.