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Title: A Novel Thermal Senor For Gas Flowmeter Measuring
Author: Mou Changhua1, Wang Maolin1, Peng Lihui2
Source: Flomeko 2010
Year Published: 2010
Abstract: Thus far, the thermal gas flow sensor is commonly based on the constant current principle. However, the constant current thermal sensor suffers the zero drift because of the tolerance of manufacture. And the accuracy and the response time of constant current thermal sensor cannot fulfill the application with high accuracy requirement. The paper presents a novel thermal sensor for gas flow measuring, which is based on the constant power techniques. Experiment results demonstrate that the novel constant power thermal sensor is of high accuracy, short response time and small zero drift.

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