Advances in thermal dispersion mass flow meter accuracy

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hermal flow measuring technology has come a long way since the introduction of thermocouple technology and early hot wire anemometers. Thermal technologies depend on heat transfer and traditionally operate on differential temperature measurements between two temperature sensitive materials to generate a signal directly proportional to the temperature differential and mass flow rate.

Over the years, thermal type flow sensors have been utilized across a very wide spectrum of applications and feature an assortment of performance limits. Modern thermal flow sensor designs have greatly evolved from laboratory devices to rugged process instruments with each new generation representing a breakthrough in sensing performance.

This White Paper points to the combination of breakthroughs -- from sensor design consistency, advanced signal processing, high accuracy calibrations and the ability to mitigate imperfect installation effects with flow conditioning -- that put thermal-type flow instruments out on the leading-edge of technologies. While the marketplace offers a broad range of thermal products in various performance and price selections, today's more advanced thermal products can be reliably utilized in the most demanding process applications and can deliver the high accuracy and repeatability that users demand.