From 0 to 10,000 scfm

Flow Range

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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)
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
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
FlowTrak

Optimize Flow Profile For Best Accuracy

  • Creates uniform flow profile at economical price
  • Maximizes flow measurement accuracy in constrained piping environments
  • Reduce upstream and downstream diameters
  • Proven Dual-Plate technology
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
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)
InnovaMass® 241S Insertion

Vortex Flow Meters

  • Insertion probe for pipes and ducts up to 72 inches (2M); Optional hot tap - no process shutdown
  • Ideal for saturated or superheated steam, gas, and liquid
  • Volumetric flow rate or mass flow
  • Multivariable for five measurements in one device
  • Energy (BTU) Monitoring for real-time monitoring of energy consumption
  • Highly reliable with no moving parts
  • Loop power option available
  • Rugged, long-lasting design for the industrial applications
InnovaMass® 240S Inline

Vortex Flow Meters

  • Highly reliable with no moving parts
  • Ideal for saturated or superheated steam, gas, and liquid
  • Flexibility with volumetric or multivariable versions
  • Multivariable for five measurements in one device
  • Energy (BTU) Monitoring for real-time monitoring of energy consumption
  • No leaks with all welded gasket-free flow body
  • Loop power option available
InnovaSonic® 210 Ultrasonic Portable Flow Meter

Portable Clamp-On Ultrasonic Flow Meter for High Accuracy Liquid Metering

  • Easy setup in five minutes or less
  • Portable clamp-on transducers measure liquid flows nearly anywhere
  • Save time with no pipe cutting or process shutdown
  • Boiler MACT certified for area source boilers (40 CFR 63, subpart JJJJJJ) and for major source boilers (40 CFR 63, subpart DDDDD) Learn More
InnovaSonic®203

Economical Clamp-On Ultrasonic Water Flow Meter for Accurate Results

  • High performance at an affordable price
  • Simply clamp-on outside of pipe for easy set up
  • Save time with no pipe cutting or process shutdown

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