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Abstract
In preliminary research, a system for detecting the flow rate of the gas mixture (N2 and CO2) has been successfully built using acoustic measurements. This detector consists of a speaker as a transmitter of ultrasonic waves, and 3 microphones as a receiver of the ultrasonic waves. The quantity measured in this detection system test is the phase difference of the ultrasonic waves captured by the left and right microphones. The flow rate of the gas mixture will affect the phase difference value between the left and right microphones. With the increase of the flow rate of the gas mixture, the phase difference between the two microphones will increase. The flowrate range tested was between 0 and 0.8 l/min, with a concentration of 20% CO2 in the gas mixture of N2 and CO2. In testing this detection system, the absolute error is 2,4 10-2 l/min.
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References
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References
Kenji Kawashima, Toshiharu Kagawa, and Toshinori Fujita. Instantaneous Flow Rate Measurement of Ideal Gases. Journal of Dynamic Systems, Measurement, and Control. Vol. 122. (2000)
Ahmad Zarkasi. Pengukuran Aliran dalam Dunia Industri. (2005). https://www.scribd.com/doc/293993278/Makalah-Pengukuran-Aliran-Ahmad-Zarkasi. Diakses tanggal 09 Oktober 2017
Deepa Kalyanaraman. Industrial flow meters/flow transmitters. Analog Applications Journal. Texas Instruments Incorporated. Business Development Manager, End-Equipment Solutions. (2012)
Sanderson M.L. Guidelines for the use of Ultrasonic Non-invasive Metering Techniques. Flow Measurement and Instrumentation 13, Pages. 125-142. (2002)
Mike Scelzo, Steve Milford, Nick Mollo, Jed Matson. Fundamentals Of Ultrasonic Flow Meters. General Electric. (2005)