About TSI
Where Research Meets Reality
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. Every day, our dedicated employees turn research into reality.
Over the past 50 years TSI has developed more than 200 precision instruments and over 50 patents as a byproduct of technology partnerships with scientists from leading research universities.
This cooperation has resulted in more than 25 technology licenses spanning scientific to industrial manufacturing applications. From monitoring classroom air to measuring Martian wind velocity, TSI instruments contribute to the design and optimization of production procedures, verifying problem resolution or generating process improvement.
TSI FLOW INSTRUMENTS
TSI, a worldwide leader in air and gas flow measurement technology, has gas flowmeters and other flow instruments to suit various applications such as patient ventilators and other medical devices.
TSI Mass Flowmeters are designed for a multitude of gas flow measurement applications. Whether measuring gas flows in a laboratory or manufacturing setting, TSI general-purpose mass flowmeters provide accurate results with multiple data output options. The display versions come complete with accessories making setup and operation fast and convenient.
TSI High Performance OEM Flow Sensors are specifically designed to measure air and gases in embedded applications. No correction for changes in temperature or atmosphere is needed. The standard design and 100% calibration saves engineering time, reduces costs and gets your products to market faster.

The TSI Certifier FA Test System for Gas Flow Analysis is the first truly portable device capable of testing virtually all models of ventilators: adult, pediatric, anesthesia, neonatal and high-frequency. It measures flow, pressure, oxygen concentration and multiple breathing parameters needed for testing medical devices in institutional, home care, field service and laboratory applications.
