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Product Type & Tech
Selection Charts & Tools
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Mass Flow Controllers:
Premium Digital / Traditional Analog / Economical OEM

Thermal Capillary Tube Sensing Technology
Mass Flow Meters:
Premium Digital / Traditional Analog / Economical / Fast Response
Thermal Capillary Tube Sensing Technology
Light Industrial Thermal Mass Flow Meters:

Immersible Probe & In-Line Versions
QuadraTherm High Performance Thermal Mass Flow Meters:
QuadraTherm 640i/780i

World's Most Accurate Thermal Mass Flow Meter

Heavy Industrial Thermal Mass Flow Meters:

Immersible Probe, In-Line, Flow Conditioners, Ultra High Purity, High-Temp, Multi-Point
Heavy Industrial Thermal Flow & Level Switches:
FLow, Level, High-Temp, Sanitary, Live-Tap
Transit-Time Ultrasonic Flow Meters:
Clamp-On, Insertion, In-Line, High-Temp, Themal Energy/BTU
Vortex Flow Meters:
Multivariable Mass Vortex & Volumetric Vortex
In-Line, Insertion, and High Pressure
Flow Calibrators:

Automotive Testing systems Division:

Application capability including engine, vehicle, powertrain, transmission, emissions, analytical and component testing



Flow Meters and Controllers by Sierra Instruments

Sierra is one of the most trusted manufacturers of high performance flow meters and controllers today. By combining product quality and delivery with a global network of flow experts spread across 150 locations in over 50 countries, our goal is to consistently deliver the best flow measurement solution for each customer and support your product over its entire life.

Our Thermal Mass, Transit-Time Ultrasonic, and Multivariable Mass Vortex instruments are available in both standard and customized versions for applications in research, quality control, OEM systems, industrial process control and hazardous environments.  From the factory floor to the laboratory, Sierra’s flow measurement technologies precisely measure or control very low flows of gas down to less than 1 sccm full scale as well as extremely high flows of gas, liquid, and steam.  With rugged product design, cutting-edge innovation, and a worldwide team of flow experts, experience why customers around the globe rely on Sierra.  If you want to learn more about us, visit the Sierra Chronicles to read a sampling of interesting flow solutions stories.

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* For a limited time, InnovaSonic 203 ultrasonic liquid flow meters are 40% off when purchased online, in-stock only. Offer ends on 9/18 5 p.m. PST.