Thermal mass flow meter is a highly accurate instrument designed to measure the mass flow rate of gases and sometimes liquids. It operates on the principle of heat transfer, where a heated element is placed in the flow stream. As the gas flows past, it carries heat away from the sensor, and the amount of heat lost is proportional to the mass flow rate. This technology allows for precise measurements without the need for additional pressure or temperature compensation.

Thermal mass flow meters are widely used in various industries, including chemical processing for monitoring gas flows in production, food and beverage for ensuring accurate gas flow during fermentation and carbonation, pharmaceuticals for precise gas measurements in manufacturing, and HVAC systems for monitoring airflow to enhance energy efficiency.