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TSI Incorporated serves a global market by investigating, identifying and solving measurement problems. As an industry leader in the design and production of precision measurement instruments, TSI partners with research institutions and customers around the world to set the standard for measurements relating to aerosol science, air flow, indoor air quality, fluid dynamics and biohazard detection. With headquarters based in the U.S. and field offices throughout Europe and Asia, TSI has established a worldwide presence in the markets we serve.
Accubalance 8380 Air Capture Hood
Detachable Micromanometer 8715
VelociCalc 9565 Multifunction Ventilation Meter   
Velocicalc 9600 Multifunction Ventilation Meter 
Velocicalc 9515 9545 Air Velocity Meters 
Velocicalc 5725 Rotating Vane Anemometer   
AirPro AP800 Micromanometer
AirPro AP500 Velocity Meters
Indoor Dusttrak Dust Monitors
Indoor Sidepak Dust Monitors 
Digital Mass Flow Meter 5000 Series
Analog & Digital Mass Flow Meter 4000 Series
Air Velocity Transducers (Model 8400)