Go to Autotest Division >- Fluid (1)
-
Flow Range (5)
- 0 to 100 sccm or less
- 0 to 50 slpm or less
- 0 to 1000 slpm or less
- 0 to 10,000 scfm
- 0 to 100,000lb/hr (45,000kg/hr)
-
Differentiators (5)
- Multi-Gas: One Device
- High Temperature Flow
- Corrosive Flow
- Digital Communications
- Low Pressure Drop
-
Tube, Pipe, Duct Size (3)
- 1/8 to 3/4 inch (3 to 19mm)
- 1.0 to 12 inch (25 to 304mm)
- Up to 72" (2M) and Larger
-
Series (5)
- 50 / 100 (Digital MFC's)
- 800 (Analog MFC's)
- 600 / 700 (Thermal)
- Software/Firmware Upgrades
- Redy Series
-
Price & Delivery (2)
- Buy/Specify Online
- Price Under $1000
- Popular Flow Applications (8)
-
Location Environment (3)
- Lab/Indoor
- Non-Hazardous Area's
- Hazardous Area's
-
FastShip - Next-day Shipping (1)
- FastShip- Ships Next Day
- Clear All
DOWNLOADMass Flow Meters
Precision Measurement for All Gas, Liquid and Steam Applications
Sierra designs and manufactures a wide range of gas mass flowmeters across three core technologies: capillary thermal, immersible thermal, and vortex technology:- Capillary and MEMS thermal mass flow meters deliver accurate direct mass flow ideal for research & industrial applications typically with lower flow rates.
- Immersible thermal mass flow meters give accurate direct gas mass flow measurement from low to high flows for compressed air, natural gas, N2 and methane to name a few in a variety of industrial applications.
- Mass vortex is ideal for steam and saturated steam applications, but it can also measure gas and volumetric water.
Capillary Thermal Meters
For research and general industry, our SmartTrak line of gas flowmeters and gas mass flow controllers (MFCs) offers direct mass flow measurement with the largest breadth of products: multi-gas, high pressure, low pressure drop, ability to measure corrosives, and small footprint.Immersible Thermal Mass Flow Meters
How much compressed air are you producing and using? Is your boiler operating as efficiently as possible? What’s your natural gas flow rate? For effective flow energy management applications, like compressed air and natural gas measurement, thermal mass flow meters give you the answers with the highest accuracy +/- 0.5% of reading, stable Dry Sense sensor technology, in situ field calibration, and software app to easily integrate across all platforms.
We offer localized and global support, commissioning, and lifetime support for all of our gas flow meters. Learn More
Vortex Flow Meters
Sierra’s mass vortex flow meters can be specified to measure up to five process variables with one process connection: volumetric flow, mass flow, density, pressure, and temperature. Vortex technology is ideal for steam flow measurement and volumetric water. Available in both inline and insertion versions, with easy hot tap feature for large steam pipes. Software apps make it easy to set up and tune your meter for your application.
FAQs
Q: What is mass flow?
A: In most processes with flowing gases such as air, N2, or methane, it is gas mass—not gas volume—that is the critical variable. Volumetric flow measurements are less reliable than mass flow measurements because changes in gas temperature and pressure will change the density of a fixed volume of gas.
In the control process, additional errors can be propagated by back pressure changes in the process. Unlike orifice plates, rotameters, variable area (VA) meters, differential pressure (DP) meters, turbine meters and all other volumetric flow devices, thermal mass flow meters and controllers are relatively immune to changes in inlet temperature and pressure. Since these instruments directly measure molecular flow (count gas molecules), they provide the most reliable, repeatable and accurate method for delivering gases from a supply volume to a process at a desired mass flow rate.
Q: How does a capillary thermal mass flowmeter work?
A: The total flow through a tube or piping system enters the CTFM, where it passes through a Laminar Flow Element (LFE). This creates a pressure drop across it, and in turn, a small amount of flow, typically in the sccm range, is fractioned off of the total flow and passes through the capillary flow sensor. With a good LFE, this ratio of flow through the sensor and flow through the LFE remains constant.
How It Works: Watch Mass Flow Controller Video
Q: How do I size my vortex flowmeter?
A: To properly configure your vortex flowmeter, you need to know type of fluid; type of gas, liquid or steam; pipe size, including type, nominal size and schedule; process conditions, such as flow rate, temperature and pressure. Use our InnovaMass sizing tool to configure your vortex flowmeter today.
Q: What is mass flow rate?
A: Simply put, the mass flow rate is the WEIGHT of the sample, while the volumetric flow rate is the SIZE of the sample.
- View by:
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)
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)
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
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
BioTrak™ 645i/745i
Wastewater Dedicated Thermal Mass Flow Meter
- Field-Selectable Gases-air, methane, digester gas
- Direct mass flow measurement maintains precise control of aeration, digestion, and cogeneration
- Accuracy: Air: +/-1% of reading +/-0.2% of full scale - Other gases: +/-1.5% of reading +/-0.5% full scale
- Insertion and inline versions
- AC or DC power input available
- Optional hot top packing gland and retractor
- Integral and remote electronic configurations available
- Wide measurement range up to 1000:1 turndown; 100:1 typical
- BioCal Calibration Validation within five minutes
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
Measure Flare Gas in Real Time
QuadraTherm® qMix RealTime
Flare Measurement System
- Meet EPA rule 40 CFR 63-measure flare gas down to 0.1 sfps (0.03 smps) where ultrasonic flow meters can't operate
- Handles upset conditions at ultra-high flows with wide 1000:1 turndown
- Easy to install with current ultrasonic flow meters-no process shutdown
- Use qMix RealTime App to connect, read, and update new flare gas composition from a GC-real time, no recalibration needed
- Set update frequency by time or by percentage change in the gas composition
- Get flow and composition trend analysis, flow alarming and triggers
BioTrak 645S/745S BioView Software
Configuration and Data Logging Software
- Quick access to all configuration parameters with pop-up windows and pull-down menus
- Selection of measurement units, flow and temperature ranges, and more
- BioSelect™ menu provides field selectable air, methane, and digester gas
- BioCal™ Calibration Validation provides quick and easy way to field validate calibration
- Set alarms; display alarm codes
- Data logging to an Excel® spreadsheet
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
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
RedyIndustrial
Water Resistant Industrial OEM Thermal Mass Flow Meters & Controllers
- Meet industrial OEM mass flow control requirements with NEMA 6 & IP67 ratings
- ATEX Certification (Category 3 / Zone 2 & 22)
- Increase efficiency with accurate and reliable flow control
- Competitive OEM pricing- cost-effective solution
- Ideal for washdown environments
- No-drift sensor warranty
BioTrakTM 645S/745S
Wastewater Thermal Mass Flow Meter
- Direct mass flow measurement maintains precise control of aeration, digestion, and cogeneration
- Microprocessor based, field-programmable electronics
- Wide measurement range up to 1000:1 turndown; 100:1 typical
- DigiSense sensor design / Swivel probe ±180° into four positions
- BioSelect™ menu provides field selectable air, methane, and digester gas
- BioView™ software provides access to meter data / Configure meter settings in field
- BioCal™ verifies calibration within five minutes
RedySmart®
The Ultimate OEM / MFC
Lifetime No-Drift Sensor Warranty
- Ultimate OEM MFC-modular, compact footprint, connect power cable & communication system
- MEMS sensor stability- Lifetime no-drift sensor warranty
- Direct mass flow with thermal technology- no temp or pressure compensation
- Precision electromagnetic valve control
- Competitive OEM pricing- Cost-effective solutions
RedyCompact®
Compact Mass Flow Meters & Regulators- Perfect VA Replacement
- Direct Mass Flow, not volumetric, for highest accuracy & repeatability
- High-precision MEMS technology: No-drift (lifetime warranty) CMOS sensor
- Compact Footprint for easy drop in replacement to VA meters
- Regulate flow with high resolution manual setpoint
- Battery operated, with large, easy-to-use touchscreen display, automatic screen adjustment (0°/90°/180°/270°)
SteelMassTM 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
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.
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
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
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
We're sorry, your filter request has no results. Please try again.