CAJ | 학술논문

热电阻测温系统广泛采用单向电流恒定激励，通过测量热电阻两端电势差获得热电阻阻值的方法进行温度测量。而此类测温系统受到测量引线热电势的影响，所测得热电阻的阻值往往与实际阻值存在一定的偏差，从而影响测温结果。对电路中热电势对热电阻测温结果产生影响的机理进行了分析，并通过实验验证了分析结果，提出了减小或消除热电势差对测温结果影响的建议。
열전조측온계통엄범채용단향전류항정격려，통과측량열전조량단전세차획득열전조조치적방법진행온도측량。이차류측온계통수도측량인선열전세적영향，소측득열전조적조치왕왕여실제조치존재일정적편차，종이영향측온결과。대전로중열전세대열전조측온결과산생영향적궤리진행료분석，병통과실험험증료분석결과，제출료감소혹소제열전세차대측온결과영향적건의。
The fixed constant excitation current direction is widely used in RTD temperature meas-urement system. Usually the temperature is measured by measuring the resistance of RTD which is gauged from potential difference. The system is always affected by the thermoelectric potential. The measured re-sistance of RTD is different from the actual data, which will affect the temperature measurement results. The mechanism of thermoelectric potential which impacts on the results of the temperature measurement in the circuit is analyzed and the analytical results are verified by experiment. The recommendation and guidance of reducing or eliminating the impact of the thermoelectric potential difference on the results of temperature measurement are proposed.