直流电桥测电阻数据记录表格

数据记录表格1.惠斯通电桥测电阻仪器组号_______电桥型号_______编号_______电阻标称值(Ω)比率臂读数C准确度等级指标α平衡时测量盘读数R(Ω)平衡后将检流计调偏Δd(格)与Δd对应的测量盘的示值变化ΔR(Ω)测量值CR(Ω)|Elim|=(α%)(CR+500C)(Ω)ΔS=0.2CΔR/Δd(Ω)ΔRx=√𝐸𝑙𝑖𝑚2+Δ𝑠2Rx=CR±ΔRx2.单电桥测铜丝的电阻温度系数序号12345678910t(℃)Rt(Ω)起始水温_____℃，阻值_____ΩαR=_____R0=_____Ω3.铜电阻数字温度计的设计组装及校验参数选择C=_____R=𝑅0𝐶=_____ΩE=(1+𝐶)210𝐶𝛼𝑅=_____V实际电压=_____V序号12345678t(℃)Ut(V)4.双电桥测低电阻低阻编号_____双电桥编号_____测量范围_____准确度等级_____y=0.0684x+15.303R²=0.9999916.51717.51818.51919.52020.501020304050607080Rt/Ωt/℃Rt-t图y=0.0942x+0.0778R²=0.999701234560102030405060Ut/Vt/℃Ut-t图