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The measurement principle of thermal gas mass flowmeter was explained in the paper. Design of the thermal gas mass flowmeter based on the MSP430 microcontroller. The flowmeter using assembled platinum-film probe as it's sensor, and its flow measuring circuit has the function of temperature compensation. The flow measuring experiment of the flowmeter was tested on Sonic Nozzle. The results of experimental...
In order to solve the pipeline influence on measurement accuracy, the software Fluent was introduced to simulate the flow condition of the ultrasonic sensor. Through the simulation of different kinds of pipeline, the ultrasonic signal was analyzed and compared. The final form of the pipeline was obtained and the ultrasonic sensor was designed. The water experiments proved the design is valid.
The measurement principle of ultrasonic sensor in an open channel flow meter is introduced. A new low-power consumption ultrasonic flow meter, which is based on the MCU of MSP430, is designed for the flowrate measurement of open channels. The measurement characteristics of the Parshall flume are analyzed. The experimental data agree with the relationship between the flowrate and the liquid level in...
In order to solve the problem of the gas flow measurement in large scale pipeline, a multi-sensor measurement based on thermal principle is introduced. The weighted data fusion and temperature fusion algorithms are designed and the mass flow model is established. The four sensorspsila experiments show the precision is improved and the project is valid.
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