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How do thermal mass flow meters work?

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A Full Guide to Thermal Mass Flow Meters

This guide aims to give a broad understanding of thermal mass flow meters, from the way they work to the industries they work best in.

What Is a Thermal Mass Flow Meter and How Do They Work?

A thermal mass flow meter is an instrument used to precisely and constantly measure the rate of flow of a fluid – normally a gas – through a pipe or conduit in some sort of industrial application.

Thermal mass flow meters are inserted directly into the center of flow of the fluid they’re measuring, either as a system mounted to the outside of the conduit with a probe entering through a port, or as a completely contained inline system that acts as part of the conduit itself. They provide a way to accurately monitor gas flow in an essentially passive manner that has a near-zero impact on the wider processes the gasses are involved in. They also offer high reliability and extremely low maintenance requirements compared to other types of flow meters, thanks to the elegant simplicity of their design.



Where are Thermal Mass Flow Meters Used?

Thermal mass flow meters are used everywhere it’s important to carefully monitor the flow rate of a fluid. To the uninitiated, that might seem like a narrow field of applications, but it’s actually shockingly broad, as carefully metered gas flow is crucial in everything from manufacturing to municipal operations to environmental protection and beyond.

While the full list of thermal flow meter applications is far too long to include in a single article, the following represent just a few common applications for the technology.

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