大学物理实验报告英文版--温度传感器.doc

大学物理实验报告英文版--温度传感器.doc

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1、PhysicalLabReport:TemperatureSensorsWriter:No:Thistimeinthelab,Icometodosomethingabouttemperaturesensors.Beforetheexperiment,Iknowthattemperaturesensorsareverywidelyusedlabequipment.Fromtheguide,Icanfindtheiroutputschangesasafunctionoftemperature.ThemostcommonlyusedonesinthelabarePlatinumresisto

2、rsandsemiconductorthermocouples.Inthisexperiment,IwilldescribetheworkingprincipleofPlatinumthermo-resistors,Semi-conductorthermo-resistor,andPNdiodetemperaturesensor,andmakemeasurementswiththeminthelab.Atthebeginning,Iusetheicewatertogetthereferencepointtozerodegreeis2degree.So,whenIdealwiththed

3、ata,Ihavechangedthetemperatureintocorrectonesalready.1.Semi-conductorthermo-resistorWithinrange,theresistanc-temperaturerelationisIfwecalibratetheresistanceatatemperatureT0tobeR0,wecanrewritethisrelationintoT/C4548505355586164707378808284868890939699102105108111113115118R/40003702347331062868254

4、42303210117441569134312821212114610891018967896838773724668624586561538505-4-AfterIchangetheunitoftemperatureintoK,Iusecomputertomakealinearfitandgetagraphasfollows:Theslopeofthelineisequalto1555.6,itmeansB=1555.6K.whichisalittlebitsmallerthanthereference.2.Platinumthermo-resistorsAplatinumresis

5、torhasatemperature-resistancerelationofT/C27303336394245485154576063666972757883889398U/V0.1150.11830.12120.12350.1260.12830.13030.13210.13410.13620.1380.13970.14130.1430.14460.14650.14790.14940.15160.15410.15620.1583T/C14118520-2-4-6-7-8-4-U/V0.10640.10570.10490.10440.10360.1030.10240.10180.101

6、20.10080.1003Fromthegraph,Igetthecoefficientofx2isB=2.8*10-7oC-2,thecoefficientofxisA=6*10-4C-12.PNdiodetemperaturesensorT/C353842454751535557596164669899101103U/V0.470.4620.450.44140.43660.42460.42010.41380.40750.40170.39580.38840.38350.29610.29290.28840.283T/C6972747678808385878890929496105106

7、110U/V0.37520.36650.36060.35530.35010.34490.33860.33180.32640.32280.31720.31230.30630.30190.27710.27460.2634T/C1412975320-1-2-3-4-5U/V0.51220.51640.52210.52650.530.53340.53510.53870.54080.54250.54450.5460.5468-4-Semiconducto

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