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Highest Accuracy 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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  • Gas: Air
    Specs: Measures 1,500 scfm of Air, 4-inch schedule 40 pipe, pressure up to 30 psig, 70°F

    QuadraTherm® 640i

    Mass Flow Meter

    Model Number: 640i-VT-2-L09-M1-E2-P2-V4-DD-0-2-8-10

    Available to ship:
    In stock (2)
    FREE FedEx Ground Shipping

    Starting at: $3643.00

    Extended Warranty
    Accessories: Manual
    View All Specs
    Qty:

    $3643.00

    Final Pricing Information

  • Gas: CH4
    Specs: Measures 1,400 scfm of CH4, 4-inch schedule 40 pipe, pressure up to 15 psig, 70°F

    QuadraTherm® 640i

    Mass Flow Meter

    Model Number: 640i-VT-2-L09-M1-E2-P2-V4-DD-0-2-8A-10

    Available to ship:
    In stock (1)
    FREE FedEx Ground Shipping

    Starting at: $3643.00

    Extended Warranty
    Accessories: Manual
    View All Specs
    Qty:

    $3643.00

    Final Pricing Information

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