精密鉑電阻數(shù)字溫度計分度方法與試驗研究

"Calibration Method and Experiment of Precision Platinum Resistance Digital Thermometer"

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Abstract：Toaddresstheissuesoflowaccuracycomplexoperation，andhighcostassociatedwiththecuentscaling calibration methods forprecisionplatinumresistance digital thermometers，astudyonthecalibrationmethod and experimentalresearchof precisionplatinumresistancedigitalthermometers isconducted.Initialy，thepaperoutlies the structure and working principleof precision platinum resistance digital thermometers，using a PT1oo platinum resistance sensors and precision electric measurement modules to achieve high-accuracyand stable temperature measurement.Then three scalingmethodsareintroduced：thepolyomialsaling method，I-90interationaltemperaturescalemethod，adthe CVD equationmethod，withthedeterminationof scaling coefficientsand parametersforeach method.Finally，calibration experimentsanderoranalysisareperformedontheprecision platinumresistance digital thermometer.The testresults indicate that the three scaling methods errors are all within ±0.03°C ，and the CVD equation calibration method stands out for its simplicity and cost-effectiveness，making it suitable for precise temperature measurements.

eywords：Platinum resistance; digital thermometer;calibration methods; error analysis

溫度作為衡量物體冷熱程度的重要指標，一直是各行業(yè)重點關(guān)注的對象，尤其是在工業(yè)、農(nóng)業(yè)生產(chǎn)及科研工作中常用的 -60°C～300°C 這一溫度段內(nèi)，溫度測量需求多、測量精度要求高。（剩余6026字）