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Core Technology: Capillary & Immersible

A Tale of Two Thermals

For gas mass flow measurement and control, Sierra offers the broadest selection of thermal mass flow measurement products on the market. This is because our thermal mass flow products incorporate two types of advanced thermal technologies, each complimentary to the other and each with unique advantages. These two thermal sensing technologies directly measure gas mass flow based on principals of heat transfer and are commonly called Capillary Thermal Sensor Technology and Immersible Thermal Sensor Technology.

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Benefits of thermal mass flow meters for gases:

  • Direct mass flow measurement of gases eliminates the need for temperature or pressure compensation
  • Accuracy +/- 0.5 percent reading; high flows 60,000 sfpm (0-305 smps); 100:1 turndown
  • Multivariable: Mass flow rate, temperature & pressure
  • Advanced four-sensor “dry sense” technology minimizes drift and enables field validation
  • Insertion version with hot tap capability for easy installation
  • Software applications for easy set-up, in-situ calibration, dial-a-pipe, and gas mixing
  • Digital communications suite
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    • flow brochure