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Flow Meters - Mass Flow Controllers
The Highest Quality Flow Meters Available

Sierra Instruments manufacturers high performance mass flow meters and mass flow controllers for nearly any gas, liquid, or steam application. Customers choose Sierra when they need an accurate and repeatable flow measurement, short delivery lead times, expert flow advice, and long term support. We provide innovative, high quality flow meters and services to top businesses around the globe, helping them to achieve significant cost savings through increased efficiencies. When it matters, customers choose Sierra.

By combining superior quality in our flow meters with a talented global network of flow meter experts, we consistently deliver the best flow measurement solutions to our customers.
Experience Our Passion for Flow!

Our Thermal Mass, Transit-Time Ultrasonic, Vortex Shedding and Multivariable flow meters are available in both standard and customized versions for applications in laboratory, industrial, and hazardous environments. Sierra's flow measurement technologies precisely measure or control very low flows 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 team of flow experts Sierra Instruments comprises 107 offices worldwide in 47 countries. Experience why customers around the globe rely on Sierra.
What Are Your Flow Measurement Needs?

We provide cost effective, robust, turnkey flow meter solutions for:

* Gas
* Air Monitoring
* Emissions
* Oxygen
* Water
* Diesel
* Displacement
* Particulate
* Analyzer Measurement

The suite of flow meters and services we offer:

* Mass Flow Meters & Mass Flow Controllers - We are a manufacturer of premium quality & performance Mass Flow Meters and Mass Flow Controllers. We provide natural gas flow meters, mass air flow meters, water flow meters, and oxygen flow meters. Sierra also carries pipe flow meters, ultrasonic flow meters, digital flow meters, and several other meters to measure liquids and steam.
* Primary Standard Flow Meter Calibration & Field Services - We specialize in Primary Standard NIST traceable calibration, repair, and field services for mass flow meters and mass flow controllers.
* OEM, Private Labeling & Custom Solutions - We provide flow meter solutions for Original Equipment Manufacturers (OEM), Private Label, and general customers to meet their pricing and design goals.
* Sierra Emissions Systems - We manufacture the well-known Model BG-3 Transient Partial Flow Dilution System used to sample engine exhaust particulate emissions during engine R&D and Certification. We also supply other engine emissions systems tools, accessories, test cell automation solutions, and consulting services.

Providing a High Return on Investment

* Direct mass flow meters provide improved accuracy and cost efficiencies.
* Direct mass flow meters do not need pressure or temperature compensation equipment or flow computers.
* Flow meters provide immunity to process changes in P & T, leading to very repeatable measurements.
* In Gases, density is highly variable. Unlike mass flow meters, volumetric gas flow meters are very sensitive to changes in pressure and temperature.
* Mass flow meters are a necessity in over 80% of all industrial processes such as those involving chemical reactions, combustion, respiration, and HVAC, which are based on mass flow, not volumetric flow.

Industry Leading Customer Service

Providing quality service and support is very important to Sierra Instruments and we value the relationship we have with our customers. In fact, when you call Sierra, you talk to a live person, all the time, every time. With 30 years in the mass flow meter industry, Sierra Instruments takes pride in offering a one-on-one approach with each valued customer.