Positive displacement (PD) flow meters are the workhorses of today’s flow meter world. They perform important flow measurements that many people take for granted.
Like the Coriolis flow meter, thermal flow meters measure mass flow, but their method is different. Instead of using fluid momentum, thermal meters use the thermal or heat conducting...
While traditional single-variable vortex meters measure volumetric flow, newer multivariable meters include pressure and/or temperature sensors to measure mass flow.