Sierra Instrument

General Information

Sierra Instrument had two divisions, flow measurement, and automotive test, striving for the ultimate in accurate and repeatable measurement and control is the name of the game.

In everything Sierra do and challenge the status quo and thrill in doing the “never before possible” to continually push our technologies and solutions to the next level.

Recent examples of this motivation from our Flow Division are seen in our completely reinvented iSeries InnovaMass vortex and QuadraTherm thermal flow meters. Examples from our Automotive Test Division are the completion of a new F1 engine testing facility featuring complete design/build capability, advanced engine conditioning, and fuel metering and conditioning capability.

Our mission is an uncompromising focus on quality, delivery, people, innovation, and customer support.  We believe that by always staying true to our mission, we will build highly creative and productive relationships with our customers that endure.

Sierra Instrument Select by Application

Selecting the right industrial flow meter for your application can be a challenging task. To make it easy, Sierra recommends the best flow meter you should use for your particular gas, liquid, or steam flow application. First, choose your application:

  • Natural gas
  • Compressed air measurement
  • Gas mixing and blending applications
  • Burner control
  • Liquid measurement
  • Steam flow measurement

Based on your application specifications, such as flow rate, pipe size, and gas measured, Sierra helps you select the perfect flow meter solution for your industry to improve quality and save money on energy costs, installation, and maintenance.

GAS / Industrial

  • InnovaMass 240i, 241i (Vortex)
  • QuadraTherm 640i, 780i (Thermal)
  • SteelTrak 640S, 780S (Thermal)
  • BoilerTrak 620S (Thermal)
  • FastFlo 620S (Thermal)
  • InnovaSwitch Flow/Level 615 (Thermal)

GAS / Flow Conditioning

  • FlowTrak (Dual-Plate Inline)

GAS / MFCs – OEM & Scientific

  • SmartTrak 100 (Capillary Thermal)
  • SmartTrak 50 (Capillary Thermal)
  • SideTrak 840 (Capillary Thermal)
  • TopTrak 820, MassTrak 810C (Capillary Thermal)
  • RedySmart (MEMS-based Thermal)
  • RedyCompact (MEMS-based Thermal)
  • FastTrak 730 (Thermal)
  • Specialty MFCs – Low flow, IP67, Low DeltaP, High Pressure (Capillary Thermal)
  • FloBox – Digital Control / Power Supplies

GAS / Calibration

  • CalTrak 800, XL (Primary standard piston prover)


  • InnovaSonic 203, 207i, 210 (Ultrasonic)
  • InnovaMass 240i, 241i (Vortex)
  • InnovaSwitch Flow/Level 615 (Thermal)


  • InnovaMass 240i, 241i (Vortex)
  • InnovaSwitch Flow/Level 615 (Thermal)

Sierra Instrument Products

Sierra Instrument Products
Sierra Instrument Products

Mass Flow Meters

Precision Measurement for All Gas, Liquid, and Steam Applications Sierra designs and manufactures a wide range of gas mass flowmeters across three core technologies: capillary thermal, immersible thermal, and vortex technology:

  • Capillary and MEMS thermal mass flow meters deliver accurate direct mass flow ideal for research & industrial applications typically with lower flow rates.
  • Immersible thermal mass flow meters give accurate direct gas mass flow measurements from low to high flows for compressed air, natural gas, N2, and methane to name a few in a variety of industrial applications.
  • Mass vortex is ideal for steam and saturated steam applications, but it can also measure gas and volumetric water.

Digital Mass Flow Controllers & Meters

Application Flexibility for General Industry, Laboratory, and OEM. SmartTrak mass flow controllers and mass flow meters provide researchers, systems integrators, and OEMs with digital mass gas flow control and measurement for nearly any type of application requirement:

  • High accuracy, primary standard calibration
  • Smallest footprint by flow range
  • Multi-gas to specify any gas, any flow range up to 1000 pm (NLP)
  • Local/remote display and pushbutton interface
  • Free user interface software app
  • Buy online, ships next day
  • Custom engineering at no extra cost
  • Lifetime support by our global engineering team

Thermal Mass Flow Meters

Get Application Flexibility with Sierra Mass Gas Flow Meters 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 flow meters deliver long-term stability with a patented no-drift DrySense™mass flow velocity sensor that allows for reliable In-Situ Calibration Validation backed by a lifetime sensor warranty.

Boiler MACT Certified

Thermal mass flow meters are also ideal for compliance with Boiler MACT regulations for inlet fuel measurement for area source boilers (40 CFR 63, subpart JJJ JJJ) and for major source boilers (40 CFR 63, subpart DDDDD).

Vortex Flow Meter

Saturated & Superheated Steam, Vortex Volumetric, and Multivariable Steam Flow Meters. The ideal technology for steam flow measurement, the InnovaMass vortex steam flow meter measures five process variables with one process connection: mass flow rate, volumetric flow rate, density, pressure, and temperature. With five high-accuracy results available from a single device, total-cost-of-ownership plummets while still providing accurate steam flow meter rates. Lower initial cost, less complex installation, and reduced maintenance costs contributed to significant overall savings to maximize your steam productivity.

Ultrasonic Flow Meter

Measure liquid flow rates quickly and more accurately with Sierra transit-time ultrasonic flow meters, vortex flow meters or thermal flow switches. Manufactured by Sierra’s team of flow engineers, our liquid flow meters are suited for even the most challenging liquid flow applications.

Flow Switches

Sierra’s InnovaSwitch™ gas and liquid flow switches represent the state-of-the-art in gaseous and liquid flow switching.

Read More Articles: Gas Vortex Flow Meter

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