Thermal dispersion mass flow meter
Thermal Dispersion Mass Flow Meters measure gas flow based on convective heat transfer.
There are two types of thermal mass flow meters for gas: insertion thermal mass flow meters and in-line thermal mass flow meters. Both thermal dispersion mass flow sensors insert a probe into a pipe stream, duct, or stack filled with gas in both cases. A resistance thermometer or resistance temperature detector (RTD) is located at the meter’s tip, and it measures temperature with it.
316 SS or Hastelloy C casings are available for these RTDs with platinum windings of durable reference-grade. As a flow sensor device, one RTD is heated using functions and integrated circuitry, while as a reference sensor, the second RTD is also heated, determining gas temperatures. The Thermal dispersion mass flow meter’s proprietary circuitry also sustains continuous overheating between the reference sensor and the flow sensor.
Benefits of Thermal dispersion mass flow meter
• These gas mass flow meters don’t have any moving parts, leading to reduction of maintenance and also permits use in demanding areas of application.
• The digital gas flow meters are ideal for calculation of mass flow instead of volumetric flow and these don’t require pressure correction or temperature meaning that no additional expenses for installation or purchase of equipment is required.
• Thermal dispersion mass flow meter would offer great repeatability and accuracy for offering great flow range rates.
• The thermal flow meters are easily able to measure large pipe flow.