TSI Incorporated serves a global market by investigating, identifying and solving measurement problems. As an industry leader in the design and production of precision instruments, TSI partners with research institutions and customers around the world to set the standard for measurements relating to aerosol science, health and safety, indoor air quality, air flow, fluid dynamics and biohazard detection. In the field of energy saving and comfort, TSI ventilation testing instrument is used to measure important ventilation parameters such as wind speed, air volume, temperature, humidity and pressure difference, in order to improve the comfort and safety of indoor environment, and to measure and evaluate the parameters of indoor air quality such as temperature, humidity, percentage of outdoor air, carbon dioxide, carbon monoxide and particulate matter in the air. These parameters are used for monitoring. Thermal comfort and healthy indoor environment are very important for residents. 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.