NOninvasive flowmeter

摘要

For noninvasive monitoring of small flow rate quantitis (into 10 1 per hour), a flowmeter has been designed. Its principle activities is measurement of warming liquid running through the tube wall. Flowmeter works with flow detection in range 0,1-10 1/hour. with high sensitivity for small flows. The system contains circuits for processing and signal analysis in a compact implementation together with the sensitive part of a sensor. Outhput data are treansfered across standard serial interface RS-232 to prersonal computer. Advantage of noninvasive flow monitoring is absence of mechanical sensor section, which increases reliability, and enables measuring of polluted and aggressive liquids.