CO2, N2, O2, AR, H2, Etc...

Gases, Mixes, Toxics and Corrosives

Sierra is a specialist manufacturer of a broad range of mass flow control instruments for accurate and repeatable gas mass flow rate measurement and control for nearly any gas flow application. View the mass flow controllers below that were engineered to precisely measure gasses like CO2, N2, O2, AR, and H2.

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SmartTrak^®100

Premium Digital Mass Flow Controllers and Mass Flow Meters

Direct mass flow with thermal technology +/- 0.5% full scale accuracy
True multi-gas digital mass flow controller
View and change every aspect of the instrument
Small footprint at 50 slpm ideal for OEMs
10-point NIST calibration on primary standards

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FlatTrak^™ 780S-UHP

Industry-Choice For Bulk High Purity Gas Custody Transfer To Semicon Fabs

Optimized for bulk ultra high purity (UHP) gas custody transfer
Direct mass flow measurement
No moving parts, 100:1 turndown, low pressure drop
Reduce straight-run requirements with built-in flow conditioning
Validate in the field for easy in-situ calibration

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TopTrak^® 820

Economical 800 Series Mass Flow Meters

Proven gas flow measurement with affordable OEM pricing
Save money with volume discounts
Read results easily with large tiltable display
Easy drop-in replacement with compact size
Available in economical nylon, stainless steel and aluminum

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SmartTrak^® 50

Low-Cost Digital Mass Flow Controllers & Mass Flow Meters

OEM pricing with digital high-performance
Small footprint at 50 slpm ideal for OEMs
5-point NIST calibration on primary standards
Large display to view flow information easily
Choice of construction in aluminum or 316 stainless-steel

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SteelMass^TM 640S

Insertion Gas Mass Flow Meter

Insertion, totalizing air/gas mass flow meter
Eliminate drift with patented DrySense™ sensor
Increase flexibility with low pressure drop, high turndown
Validate in the field for easy in-situ calibration
Backed by lifetime sensor warranty

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QuadraTherm^® 640i

Industry's Most Accurate Air / Gas Thermal Insertion Mass Flow Meters

Achieve high accuracy +/- 0.75% of reading
Eliminate drift with patented DrySense™ sensor
Validate in the field for easy in-situ calibration
Use qMix software to easily change gas composition in the field and retain accuracy Download Flare Gas Mass Measuring Tech Note
Backed by lifetime sensor warranty
Boiler MACT certified for area source boilers (40 CFR 63, subpart JJJJJJ) and for major source boilers (40 CFR 63, subpart DDDDD) Learn more >
Part of Sierra's Big-3 iSeries family of flow meter technologies Learn more >
Meet EPA rule 40 CFR 63 for flare gas measurement at ultra-low flows down sfps (0.03 smps) with QuadraTherm^® qMix RealTime Flare Measurement System (FMS)

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TM500™

High Performance Industrial Thermal Mass Flow Meter

Accuracy
- +/- 1.0% of reading plus +/- 0.2% of full-scale – Air, Nitrogen
- +/- 1.5% of reading plus +/- 0.5% of full-scale – All other gases
Repeatability +/- 0.2% of full scale
Direct measurement of gas mass flow / No volume to mass calculations
DigiSense™ robust sensor design
AC or DC power
Use optional Gas-Mix™ feature to easily change gas selection or create gas mixes in the field - no recal required
2-3 week delivery lead times / 1 week delivery possible

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TM100™

Economical Industrial Thermal Mass Flow Meters

Accuracy
- +/- 1.0% of reading plus +/- 0.2% of full-scale – Air, Nitrogen
- +/- 1.5% of reading plus +/- 0.5% of full-scale – All other gases
Repeatability +/- 0.2% of full scale
Direct measurement of gas mass flow / No volume to mass calculations
DigiSense™ robust sensor design
12 to 24 volt DC power
Use optional Gas-Mix™ feature to easily change gas selection or create gas mixes in the field - no recal required
2–3-week delivery lead times / 1-week delivery possible

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FlatTrak^™ 780S

Inline Thermal Mass Flow Meters with Flow Conditioning

Reduce straight-run requirements with built-in flow conditioning
Eliminate drift with DrySense sensor
Needs only 3-diameters up, zero downstream
Validate in the field for easy in-situ calibration
Backed by lifetime sensor warranty

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QuadraTherm<sup>®</sup> 780i Inline Mass Flow Meter.

QuadraTherm^® 780i

Highest Air/Gas Mass Flow Measurement Accuracy in Industry

Achieve the highest accuracy +/- 0.5% of reading
Eliminate drift with DrySense sensor
Reduce straight-run requirements with built-in flow conditioning
Needs only 1-diameter up and zero downstream diameters
Validate in the field for easy in-situ calibration
Backed by lifetime sensor warranty
Boiler MACT certified for area source boilers (40 CFR 63, subpart JJJJJJ) and for major source boilers (40 CFR 63, subpart DDDDD), Learn more >
Part of Sierra's Big-3 iSeries family of flow meter technologies, Learn more >
Meet EPA rule 40 CFR 63 for flare gas measurement at ultra-low flows down sfps (0.03 smps) with QuadraTherm^® qMix RealTime Flare Measurement System (FMS)

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FastFlo^™ 620S

Fast-Response Insertion Thermal Mass Air Flow Sensor

Increase efficiency with fast response time within 200 milliseconds
Optimized air, nitrogen, and inert gas measurement for 1, 2, 3, 4 inch sch. 40 pipe sizes
Wide flow ranges from 0 to 42,000 scfh
Easily install in the field or retrofit

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BoilerTrak^™ 620S-BT

Insertion Thermal Mass Flow Meter for Boiler & Heater Efficiency

Optimized natural and propane measurement for 1, 2, 3, 4 inch sch. 40 pipe sizes
Wide flow ranges from 0 to 42,000 scfh
Easily install in the field or retrofit
Certified for GHG measurement meeting EPA (40 CFR Part 98)
Boiler MACT certified for area source boilers (40 CFR 63, subpart JJJJJJ) and for major source boilers (40 CFR 63, subpart DDDDD) Learn More.

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