MATHESON Flow Measurement and Control products include a broad range of flowmeters and rotameters, plus gas proportioners, gas mixers, mass flowmeters and mass flow controllers, plus systems for gas blending and gas dilution.
We can help you choose the right flow measurement and control product for your application.
Flow measurement and control selection guidelines, specifications, and ordering information can be found on our Online Store. Store does not require pre-registration and accepts major credit cards. If your organization is tax exempt qualified, you will be required to register with your exemption documentation.
What is the difference between a Rotameter and a Flowmeter?
All rotameters are flowmeters, but not all flowmeters are rotameters.
A rotameter measures flow rate in a closed tube characterized by a tapered tube and some sort of float (typically a sphere). By definition, rotameters exclude any type of flow measurement device that does not employ a tube and float. Ironically, the element called the float does not actually float on the fluid being measured.
A flowmeter, broadly defined, is any device that measures flow, and therefore includes all rotameters, plus any other devices designed for the task of measuring flow.