600 & 700 Series
Thermal Mass Flow Meters
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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)
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)
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
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
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.
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
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
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
qMix Gas Mixing Feature
Field-Update For Gas Composition Changes
- Powerful, gas mixing software to create custom gas mixtures in the field
- Per meter license gives unlimited custom gas mixtures and uploads per meter serial number
- Maintain flow meter accuracy if gas composition changes
- No need to send unit back to the factory if gas composition changes
- Avoid costly recalibration
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
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
Flow Totalizer
Four Multi-Gas Flow Totalizers for the QuadraTherm Thermal Mass Flow Meter
- View and totalize four gases with one instrument
- Totalize multiple gases independent of each other
- Accurately monetize and allocate gas usage
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
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
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