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Thermal Mass Flow Meters for Gases (All Versions)

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With North America's #1 selling thermal mass flow meter (Flow Research, Boston, MA.), customers can enjoy the many benefits of thermal technology—wide turndown ratio, very low pressure drop, no moving parts, application flexibility, and a direct digital gas mass flow rate measurement.

All of Sierra's thermal mass flow meters deliver long-term stability with patented no-drift DrySense™ mass flow velocity sensor backed by a lifetime warranty.

View Selection Charts:    S-Series     iSeries QuadraTherm

Our proven immersible thermal gas mass flow meters:

  • Offer rugged and reliable industrial gas and air mass flow measurement
  • Are ideal for small pipes, as well as very large ducts or stacks that have non-uniform velocity profiles, high turn-down requirements, dirty gas streams, wide temperature ranges, and fast velocity and temperature changes
  • Allow customers to create and upload new gases as their gas composition changes with new qMix gas mixing software Learn More
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