Important Notice | Temporary Extended Lead Time Notice

Sierra Instruments is experiencing longer than normal lead times due to supply chain issues. Please note that your online configure lead times may be extended. Should you have any questions, please contact Customer Support at 831-373-0200.

FastShip™ Products

Guaranteed Next Day— Factory Direct!

Filter products by:
  • Fluid (3)
    • Gas
    • Liquid
    • Steam
  • Type & Technology (11)
    • Mass Flow Controllers / Meters
    • Thermal Mass
    • Ultrasonic
    • Vortex
    • Flow & Level Switches
    • Flow Calibration Systems
    • Control/Power Supplies
    • Mass Flow Meters (All)
    • iSeries Next Generation
    • MEMS Technology
    • Scientific
  • Price & Delivery (2)
    • Buy/Specify Online
    • Price Under $1000
  • 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
  • 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 (6)
    • Multi-Gas: One Device
    • Digital Communications
    • Low Pressure Drop
    • High Pressure Flow
    • Corrosive Flow
    • High Temperature Flow
  • Series (9)
    • 50 / 100 (Digital MFC's)
    • 800 (Analog MFC's)
    • 200 (Ultrasonic)
    • 600 / 700 (Thermal)
    • 200 (Vortex)
    • Flow Switches
    • CalTrak (Calibrators)
    • 900 (Control Elex)
    • Redy Series
  • Model Number (10)
    • 50 Series
    • 100 Series
    • 600 & 700 Series
    • 200 Series
    • 800 Series
    • Flow Switches
    • 620S
    • RedySmart
    • SmartTrak
    • RedyCompact
  • FastShip - Next-day Shipping (1)
    • FastShip- Ships Next Day
  • Clear All
Enlarge Premium Mass Flow Controllers

SmartTrak®100

Premium Mass Flow Controllers

  • 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
$2101 BUY NOW
More Options Request a Quote Accessories
Enlarge Premium Mass Flow Meters

SmartTrak®100

Premium 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
$1759 BUY NOW
More Options Request a Quote Accessories
Enlarge Economical Mass Flow Controllers

SmartTrak® 50

Economical Mass Flow Controllers

  • 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
$1499 BUY NOW
More Options Request a Quote Accessories
Enlarge Economical Mass Flow Meters

SmartTrak® 50

Economical 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
$1448 BUY NOW
More Options Request a Quote Accessories
Enlarge Back Pressure Controllers

RedySmart® Pressure Controller

Back Pressure Controllers

  • Combines the power of RedySmart MEMS technology with electronic pressure control
  • On-the-fly switching between pressure control and flow control offers maximum flexibility
  • Automatically control a predefined process pressure and at the same time measure and/or limit the flow rate
$2639 BUY NOW
More Options Request a Quote Accessories
Enlarge Economical Analog Mass Flow Meter

TopTrak® 820

Economical Analog Mass Flow Meter

  • Proven gas flow measurement with affordable OEM pricing
  • For fast delivery, buy online, next-day shipment
  • 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
$867 BUY NOW
More Options Request a Quote Accessories
Enlarge Economical Nylon Mass Flow Controller

MassTrak® 810

Economical Nylon Mass Flow Controller

  • Record flow measurement at affordable OEM pricing
  • Save money with volume discounts
  • Read results easily  with large LCD readout
  • Accurate mass flow control even with low pressure drop
  • Save time with built-in local setpoint control
$1715 BUY NOW
More Options Request a Quote Accessories
Enlarge OEM Mass Flow Meters

RedySmart®

OEM Mass Flow Meters

  • 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
$1218 BUY NOW
More Options Request a Quote Accessories
Enlarge OEM Mass Flow Controllers

RedySmart®

OEM Mass Flow Controllers

  • 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
$1766 BUY NOW
More Options Request a Quote Accessories
Enlarge Compact Meters

RedyCompact®

Compact Meters

  • 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°)
$848 BUY NOW
More Options Request a Quote Accessories
Enlarge Compact Manual Regulators

RedyCompact®

Compact Manual Regulators

  • 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°)
$960 BUY NOW
More Options Request a Quote Accessories
Enlarge Economical Ultrasonic Mass Flow Meter

InnovaSonic®203

Economical Ultrasonic Mass Flow Meter

  • 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
  • For fast delivery, buy online, next-day shipment
$2325 BUY NOW
More Options Request a Quote Accessories
Enlarge Ultrasonic Liquid & Thermal Energy/BTU Flow Meter

InnovaSonic®207i

Ultrasonic Liquid & Thermal Energy/BTU Flow Meter

  • High accuracy transit-time ultrasonic technology
  • Software apps for ease of installation & diagnostics
  • Optimized for thermal energy/BTU measurement
  • Clamp-on sensors, no pipe cutting, no shutdown
  • Real-time liquid density compensation
  • Upgrade meter firmware and software in the field
  • Part of Sierra's Big-3 iSeries family of flow meter technologies, Learn more >
$3891 BUY NOW
More Options Request a Quote Accessories
Enlarge Ultrasonic Portable Flow Meter

InnovaSonic® 210 Ultrasonic Portable Flow Meter

Ultrasonic Portable Flow Meter

  • 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
  • For fast delivery, buy online, next-day shipment
  • Boiler MACT certified for area source boilers (40 CFR 63, subpart JJJJJJ) and for major source boilers (40 CFR 63, subpart DDDDD) Learn More
$7338 BUY NOW
More Options Request a Quote Accessories
Enlarge Highest Accuracy Insertion Mass Flow Meters

QuadraTherm® 640i

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)
$3827 BUY NOW
More Options Request a Quote Accessories
Enlarge Vortex Flow Meters

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
  • For fast delivery, buy online, next-day shipment
$6520 BUY NOW
More Options Request a Quote Accessories
Enlarge Fast-Response Insertion Mass Flow Meters

FastFlo™ 620S

Fast-Response Insertion Mass Flow Meters

  • 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
  • Fast delivery—ships next-day from stock
$1963 BUY NOW
More Options Request a Quote Accessories
Enlarge Insertion Mass Flow Meters For Boilers

BoilerTrak™ 620S-BT

Insertion Mass Flow Meters For Boilers

  • 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. 
  • Fast delivery—ships next-day from stock 
$1963 BUY NOW
More Options Request a Quote Accessories
Enlarge Thermal Flow Switch for Gases and Liquids

InnovaSwitch™ Flow Switch

Thermal Flow Switch for Gases and Liquids

  • Ultra-sensitive with fast response time
  • Ideal for industrial pump protection
  • Buy online, next-day shipment
  • 1-year warranty
  • Unique high temperature up to +458°C
$1392 BUY NOW
More Options Request a Quote Accessories

Help & Info | Equifax Secure Site

  • BBB
  • ISO
  • American Express
  • Discover
  • Master Card
  • VISA