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Thermal Mass Flow Meters for Heavy-Industry

North America's #1 selling thermal mass flow meter offering (2009 Flow Research, Yoder), our heavy-industrial thermal mass flow meters are designed for the most demanding industrial gas mass or air flow measurement applications.  These rugged and reliable meters feature the most advanced digital technology and heavy-duty 316 stainless steel wetted materials. All of our thermal instruments feature our proprietary Dry-Sense™ Sensor Technology backed by a Lifetime Limited Warranty. Sierra also manufacturers a complete family of Light-Industrial Thermal Mass Flow Meters.

All of our heavy-industrial thermal mass flow meters: Steel-Trak™ Model 640S, Flat-Trak™ Model 780S , and UHP Model 780S feature direct mass flow measurement. Each model also features Sierra’s Smart Electronics Package for field-rangeability, flow-range adjustment, and meter validation and diagnostics. Sierra's heavy-industrial thermal mass flow meters have no moving parts and feature digital signal processing, which allow them to work in the toughest environments.  Sierra's Multi-Trak™ Model 670S is an advanced state-of-the-art instrument for measuring mass flow rates in very large ducts or stacks that have non-uniform velocity profiles, high turn-down requirements, dirty gas streams, wide temperature ranges and fast velocity and temperature changes.

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Steel-Mass™ Model 640S Insertion Mass Flow Meter
Accurate and repeatable, this product is a rugged and reliable mass flow measurement workhorse in heavy industrial applications.  Product accuracy is ± 1% of reading +0.5% full scale, and the flow range is up to 20,000 sfpm (air) with standard accuracy. It inserts easily into ducts and pipes to monitor total gas mass flow rate.

 



Multi-Trak™ Model 670S High-Performance Multi-Point  Flow Meter for Large Ducts and Stacks
Sierra's Multi-Trak™ Model 670S is an advanced state-of-the-art instrument for measuring mass flow rates in very large ducts or stacks that have non-uniform velocity profiles, high turn-down requirements, dirty gas streams, wide temperature ranges and fast velocity and temperature changes.


 


Flat-Trak™ Model 780S In-line Mass Flow Meter with Flow Conditioning
Like its cousin the Model 640S, the Flat-Trak Model 780S provides repeatable, rugged, and reliable performance. Additionally, the product features Sierra’s flow conditioning elements.  Product accuracy is ± 1% of reading +0.5% full scale, and the flow range is up to 20,000 sfpm (air) with standard accuracy.


 

Ultra High Purity Model 780S UHP In-line Mass Flow Meter with Flow Conditioning
This model is the industry choice for gas distribution in ultra-clean processes. This product features 316L electropolished tubing with 7-10 Ra or 20-25 Ra interior finishes.

 

 

Flow-Trak™ Dual-Plate Flow Conditioning Element
As used in our Model 780S products, flow conditioning elements represent an economical solution to problems associated with monitoring flow installations where long, straight runs of piping are not available.