Thermal Flow Meters are instruments that measure the flow rate of gases based on heat transfer principles. They typically use a heated sensor; as gas flows past it, heat is carried away, and the temperature change is proportional to the mass flow rate.
These meters provide accurate and reliable measurement of low-velocity or low-pressure gas flows and are commonly used in air, nitrogen, oxygen, natural gas, and industrial gas monitoring, as well as in HVAC systems and process control applications.