基于惠斯通电桥的液体浓度测量装置研究

打开文本图片集

中图分类号：0435.1 文献标志码：A 文章编号：2095-2945（2025）19-0026-04

Abstract：Thecompositionof transparentliquidsisoftencomplex，and solutesmayinterferewitheach other during measurement，leading toerorsinresults.Comparedtoexistingliquidconcentrationmeasurementmethods-suchasopticalbeat frequencywaveanalysis，titration，polarimetryandrefractometrythisstudyutlizesaWeatstoneBridgetodetermineliquid concentration.Thisapproachofersoperationalsimplicityandbroadapplicabilitytodiverseliquidsystems（providedtheliquid's propertiesalignwiththebridge'smeasurementprinciples）.BasedontheWheatstoneBridgeprinciple（rootedinOhm'sLawand Kirchoff laws），thestudycorelatesliquidconcentrationwithimpedancechangesbyleveragingtheliquid'sphysicochemical characteristics.Usingsalinesolutionasanexample，theimpedancevariationinducedbydiferentconcentrationsismeasuredto indirectlydeterminethconcentration.Experimentalresultsestablishafunctionalrelationshipbetwnsaltconcentrationandthe deflection readings of an AC milivoltmeter，enabling the measurement of transparent liquid concentrations.

Keywords：Wheatstone Bridge;concentration; transparent liquid;Kirchhoff's laws;Ohm's Law

透明液体成分复杂，溶质间干扰易致测量误差。（剩余3715字）