DEVELOPMENT OF A VERY SMALL ULTRASONIC FLOWMETER FOR LIQUIDS

H. Ishikawa, M. Takamoto, K. Shimizu, H. Monji, G. Matsui

Abstract

In this study, small disk ultrasonic transducers were used to develop a very small ultrasonic flowmeter with a measuring pipe diameter of less than 1 mm. The feasibility of using an ultrasonic flowmeter to measure a liquid flow rate below 1 mL/min was investigated experimentally. Calibration results of the developed ultrasonic flowmeter were almost all scattered within the range predicted from the standard deviation of measurements. The flowmeter can stably measure a flow rate of less than 1 mL/min with a standard deviation of about 0.01 mL/min. This result suggests that the flowmeter can be very useful for semiconductor, medical and chemical industries.

Keywords

ultrasonic flowmeter, very low flow rate, zero stability, cross-correlation, small disk ultrasonic transducer

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IMEKO-TC9-2000-095.pdf

DOI

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IMEKO TC

TC9 - Flow Measurement

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