skip to content
Flowmeter Online Purchase


Leader in Flow Measurement Instrumentation

For half a century, TSI has earned the reputation as a leader in designing and manufacturing flow measurement instrumentation. TSI mass flow meters and mass flow sensors for gases are used worldwide in laboratory and manufacturing settings, plus embedded applications. TSI flowmeters and embedded flow sensors are optimized for medical applications where accuracy and reliability are a key requirement. 

Accurate and Reliable Flow meters and Flow Sensors

All TSI flowmeters and flow sensors boast the following performance advantages:

  • Fast response time – four ms response times are ideal for control applications and measuring tidal volumes with high accuracy
  • Fully calibrated – eliminate the need to worry about flowmeter calibration. All TSI flowmeters and flow sensors are characterized against a flow reference and have extensive gas calibrations stored on-board, resulting in highly accurate measurements
  • Fully compensated – all TSI flowmeters and flow sensors are temperature compensated and provide an output of mass flow independent of temperature and pressure

TSI Digital Flowmeters Trusted Worldwide in a Variety of Applications

Engineers and scientists use TSI digital flowmeters in applications such as:

  • Engineering new product development
  • Research
  • Manufacturing and quality assurance
  • Field service

TSI Mass Flow Sensors for Embedded Applications

TSI embedded mass flow sensors are optimized for medical applications with respiratory products being an ideal fit for TSI technology. Since 1983, TSI flow sensors have been used in patient ventilators around the world due to the unique TSI technology and performance. TSI flow sensors are trusted as reliable, accurate, and cost effective for use in ventilator applications ranging from adult to neonatal.

Custom OEM Mass Flow Sensors

Flowmeter OEM Group

TSI's Flowmeter Design Team can develop the precise sensor you need to optimize your design.

Learn more »




Purchase any one of our general purpose flowmeters with the guarantee that you can return it for a full refund if not entirely happy with its performance.

Need Help Finding a Flow Meter Product?

  1. 1 What gas type are you trying to measure?
  2. 2 What flow range are you looking for?
  3. 3 What is the end configuration you need?
  4. 4 Do you want to display the values?
If you are seeing this, then the pnlEUCookieScripts is working