Suto Itec Logo 20 Years Yellow Final

What is a Thermal Mass Flow Meter?

by | Nov 19, 2025 | 0 comments

Thermal mass flow meters use heat transfer to measure gas flow directly. They offer accurate, stable and low-maintenance performance in clean, dry gas applications.

A thermal mass flow meter measures compressed air and gas using convective heat transfer. It contains a heated sensor and a temperature sensor. As gas flows past, it cools the heated sensor, and the meter calculates mass flow based on how much heat is removed.

Thermal mass flow meters offer direct mass flow measurement, fast response time, wide rangeability, low pressure drop, and no moving parts, making them reliable and low maintenance.

They are sensitive to changes in gas composition, not suitable for wet or contaminated air, and work best with clean, dry gases.

Overall, they provide accurate and stable flow measurement for many industrial compressed air and gas applications.

Tags: compressed air, thermal mass flow meter