Sierra Instruments. Measurably Different™.

20 Ryan Ranch Road, Suite 109, Monterey, CA 93940 USA
+1 (831) 373-0200

For over 50 years, Sierra has been a global pioneer in the design and manufacturing of flow instruments that you can trust. We provide accurate and efficient solutions that control industrial processes, regulate oil and gas to minimize greenhouse gases, convert waste to energy, deliver life-saving medicine, and create silicon chips that enable advanced technology. With over 150 locations in over 50 countries, Sierra provides innovative products and services where and when needed.

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Overview

We’re Measurably Different So YOU Can Be.

Sierra designs and manufactures a complete line of precision fluid flow measurement and control instrumentation for nearly any gas, liquid, or steam application. Our products provide advanced flow solutions for industries like oil and gas, clean energy, wastewater, semiconductors, scientific research, and bioprocessing. Sierra specializes in developing stable and innovative sensors to improve accuracy, repeatability, and application flexibility to meet our customers’ needs.

Technology

Precise Flow Measurement for Gas, Liquid, and Steam Applications

Sierra designs and manufactures highly accurate thermal mass flow meters to meet your budget and application needs. Sierra’s thermal mass flow meters have a wide turndown ratio that allows customers to measure low and very high flows and very low-pressure drops with no moving parts. All utilize Sierra’s innovative sensor technologies, like Sierra’s QuadraTherm and TM Series, to deliver game-changing field flexibility and accuracy, improve process efficiency, and reduce costs.

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Sierra offers a broad range of gas flow meters and flow controllers (capillary-thermal mass, MEMS-based thermal mass, and multivariable differential pressure) for any clean dry gas, gas mixes, and corrosives for low-flow applications. All of Sierra’s gas flow meters and controllers have advanced state-of-the-art sensor technology, which gives them the ability to provide high accuracy, unsurpassed stability, repeatability, field flexibility, multi-gas capability, and more. Sierra’s new d·flux multivariable technology measures five parameters with +/-0.3% accuracy. Get the precision data you need to make your job easier in aerospace, semiconductor, biotech, pharma, or automotive.

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Reduce cost and improve efficiency with Sierra’s InnovaMass multivariable vortex flow meters. Ideal for saturated or superheated steam, gas, and liquid applications, Sierra’s InnovaMass measures five process variables (mass flow, volumetric flow, density, pressure, and temperature) from a single device with precision accuracy. The InnovaMass 241S insertion model offers an optional hot-tap version for easy installation with no process shutdown and is ideal for pipes and ducts up to 72 inches. All models are fully field-programmable, configurable, and feature RS-485, Modbus, HART, and BACnet protocols. Start maximizing your productivity and improving efficiency today with Sierra’s InnovaMass vortex flow meters.

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Measure liquid flow quickly and more accurately with Sierra transit-time ultrasonic flow meters. Sierra’s InnovaSonic ultrasonic flow meters are ideal for water flow applications due to their ease of use and application flexibility. They achieve high accuracy at low and high flows, save time without pipe cutting or process shutdown, and are unaffected by external noise. Sierra ultrasonic flow meters feature high accuracy, +/- 0.3% repeatability, wide turndown, and bi-directional flow range and are ideal for large line sizes.

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Sierra’s InnovaSwitch insertion-type flow switch is a high-performance, industrial-grade mass flow switch for liquids and gases. The InnovaSwitch is designed for heavy industrial environments, including high temperature and high pressure. InnovaSwitch includes temperature compensation over its entire measurement range to ensure set point stability and accuracy for process temperatures that vary up to ± 50°F (± 10°C). The sensor and wetted parts are durable 316L stainless steel with all-welded construction and have no moving parts. The switch is easy to install and adjust, giving reliable, low-maintenance performance in the most demanding applications.

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Industries We Serve

Energy Management

Plant operators and engineers continuously look for ways to make their facilities as efficient and productive as possible to control costs. Accurate flow measurement is critical to achieving this goal across many flow applications. Thermal, vortex, and ultrasonic flow meters from Sierra provide a comprehensive solution to understanding your key flow energy applications such as natural gas measurement, boiler and burner efficiency, compressed air measurement, steam production (usage and allocation), and water measurement and energy BTU measurement.

Oil & Gas

Sierra’s mass flow meters provide measurement solutions for oil and gas applications, from monitoring injection at the wellhead to measuring flare gas in the field. They deliver the data you demand to improve process efficiency and comply with reporting regulations. Sierra QuadraTherm meters provide high accuracy that rivals Coriolis meters at significantly reduced cost. They also can change gas or gas mixes in the field and have low-end sensitivity for venting and leak detection.

Water & Wastewater

With its high turndown and direct mass flow measurement, Sierra’s immersible thermal meters are the instrument of choice for measuring aeration basin air flow and monitoring digester gas. Their multivariable vortex meters measure steam in the cogeneration processes, while ultrasonic flow meters measure influent and effluent. Sierra’s BioTrak is built specifically for wastewater and provides direct mass flow measurement, no moving parts, wide turndown, and multi-gas flexibility. It is easy to install to meet the rugged demands of municipal and industrial wastewater plants where aeration, digestion, and cogeneration play pivotal roles.

Semiconductor

From bulk gas delivery to cleaning to purging operations, mass flow controllers offer the simplicity and robustness demanded in semiconductor applications. Sierra’s flow instrumentation provides precision gas flow control and repeatability to ensure product quality and consistency, help improve efficiency, reduce waste, and enhance safety. Their ability to handle corrosive gases, high flow rates, and multiple gases with the same unit makes Sierra’s flow meters and controllers a tool-maker’s choice for thin film deposition, wafer cleaning, bulk UHP gas delivery, and wafer processing.

BioTech

Optimized for the BioPharm industry, Sierra’s Redy line of thermal mass flow meters and controllers based on stable MEMS (Micro-Electro-Mechanical System) technology offers customers a true OEM thermal mass flow control solution. Its modular design and easy integration into a gas mixing block provide a highly flexible digital communications option. They handle various reactions or events in bioreactors, such as promoting tissue growth, assisting organisms to produce desired chemicals or medicines, and developing enzymes to break down hazardous compounds. Mass flow control of oxygen assures that organisms that consume oxygen prosper and produce abundant yields.

Energy Management

Plant operators and engineers continuously look for ways to make their facilities as efficient and productive as possible to control costs. Accurate flow measurement is critical to achieving this goal across many flow applications. Thermal, vortex, and ultrasonic flow meters from Sierra provide a comprehensive solution to understanding your key flow energy applications such as natural gas measurement, boiler and burner efficiency, compressed air measurement, steam production (usage and allocation), and water measurement and energy BTU measurement.

Oil & Gas

Sierra’s mass flow meters provide measurement solutions for oil and gas applications, from monitoring injection at the wellhead to measuring flare gas in the field. They deliver the data you demand to improve process efficiency and comply with reporting regulations. Sierra QuadraTherm meters provide high accuracy that rivals Coriolis meters at significantly reduced cost. They also can change gas or gas mixes in the field and have low-end sensitivity for venting and leak detection.

Water & Wastewater

With its high turndown and direct mass flow measurement, Sierra’s immersible thermal meters are the instrument of choice for measuring aeration basin air flow and monitoring digester gas. Their multivariable vortex meters measure steam in the cogeneration processes, while ultrasonic flow meters measure influent and effluent. Sierra’s BioTrak is built specifically for wastewater and provides direct mass flow measurement, no moving parts, wide turndown, and multi-gas flexibility. It is easy to install to meet the rugged demands of municipal and industrial wastewater plants where aeration, digestion, and cogeneration play pivotal roles.

Semiconductor

From bulk gas delivery to cleaning to purging operations, mass flow controllers offer the simplicity and robustness demanded in semiconductor applications. Sierra’s flow instrumentation provides precision gas flow control and repeatability to ensure product quality and consistency, help improve efficiency, reduce waste, and enhance safety. Their ability to handle corrosive gases, high flow rates, and multiple gases with the same unit makes Sierra’s flow meters and controllers a tool-maker’s choice for thin film deposition, wafer cleaning, bulk UHP gas delivery, and wafer processing.

BioTech

Optimized for the BioPharm industry, Sierra’s Redy line of thermal mass flow meters and controllers based on stable MEMS (Micro-Electro-Mechanical System) technology offers customers a true OEM thermal mass flow control solution. Its modular design and easy integration into a gas mixing block provide a highly flexible digital communications option. They handle various reactions or events in bioreactors, such as promoting tissue growth, assisting organisms to produce desired chemicals or medicines, and developing enzymes to break down hazardous compounds. Mass flow control of oxygen assures that organisms that consume oxygen prosper and produce abundant yields.

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