The accuracy of a thermal mass flow meter is dependent upon the technology type and the quality of the materials used for the meter’s sensor design. A well-designed sensor is made to measure flow accurately over a long period of time with minimal drift, independent of recalibration and calibration validation diagnostics. For a thermal mass flow meter, the materials used in the manufacture of the sensor play a vital role in the overall performance of the sensor. The materials must create the best environment for heat transfer - the essential principle of thermal mass flow measurement - or the accuracy and response time suffer.
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Flowmeters play a critical role in today’s process world. As technology has advanced through the decades, a variety of flowmeter technologies has expanded the ways, customers, control and monitor their utilities, steam, fiscal metering, etc. Today, a few of the top flowmeters on the market are the Coriolis, magnetic, vortex, ultrasonic, differential pressure, and variable area meters. Several other technologies, such as turbine, thermal mass, and positive displacement, are also available. Since each flowmeter has positive and negative attributes, careful consideration is required to avoid purchasing a technology that is inappropriate to the application.
Measuring the flow of a fluid or gas is essential to many industrial processes. Many technologies exist to measure flow including Electromagnetic, Ultrasonic, Turbine, Vortex, Positive Displacement, Coriolis, and Thermal Mass flow meters. The ability to monitor the flow rate and flow totals from various flow meters wirelessly enables users to avoid costly conduit runs from the point of the flow measurement back to a central controller.
A study of the importance of gas composition and calibration and their effects on flow meter accuracy.