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Lecture
Thermal Mass Flowmeter
Description
This lecture covers the operation of thermal mass flowmeters, focusing on the null method to balance temperature for flow measurement. It explains how to adjust current to maintain a constant temperature difference and balance the bridge in the absence of fluid circulation. The lecture also discusses the resistance variation with current and voltage, the Wheatstone bridge, and the time constant of the measurement system. Additionally, an example of a flowmeter used to measure respiration is presented.
Official source
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