发明名称 FREQUENCY OUTPUT-TYPE HOT-WIRE FLOWMETER
摘要 <p><P>PROBLEM TO BE SOLVED: To correct curvature in an output characteristic due to an individual difference of a frequency output-type hot-wire flowmeter. <P>SOLUTION: This frequency output-type hot-wire flowmeter comprises a heating resistance element disposed in a fluid which is a measuring object and a voltage-frequency conversion circuit for converting an air-flow voltage signal proportionate to an electric current flowing through the resistance element. The conversion circuit nonlinearly converts the voltage signal to generate an output frequency. <P>COPYRIGHT: (C)2004,JPO&NCIPI</p>
申请公布号 JP2004219219(A) 申请公布日期 2004.08.05
申请号 JP20030006053 申请日期 2003.01.14
申请人 HITACHI LTD 发明人 ANDO AKIRA
分类号 G01F1/696;(IPC1-7):G01F1/696 主分类号 G01F1/696
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