精密铂电阻数字温度计分度方法与试验研究

"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

温度作为衡量物体冷热程度的重要指标，一直是各行业重点关注的对象，尤其是在工业、农业生产及科研工作中常用的 -60∘C～300∘C 这一温度段内，温度测量需求多、测量精度要求高。（剩余6026字）