数字式贝克曼温度计设计与制作  

Design and fabrication of digital Beckman thermometer

作　　者：刘志存 白云山 张宗权 卫芬芬 鲁百佐 LIU Zhicun;BAI Yunshan;ZHANG Zongquan;WEI Fenfen;LU Baizuo(Basic Experimental Teaching Center,Shaanxi Normal University,Xi’an 710062,China)

机构地区：[1]陕西师范大学基础实验教学中心

出　　处：《传感器与微系统》2020年第2期98-100,共3页Transducer and Microsystem Technologies

摘　　要：针对物化实验中高精度温度测量需求,设计了基于恒流源驱动Pt1000的数字贝克曼温度计,分析了测温系统工作原理、定标方法及影响测温系统准确度的诸多因素。根据测温需求合理设置电路参数,测温精度可达到0.001℃。调试并修正了系统参数,测试结果表明:提高了测温准确度。该系统具有功耗小、成本低廉等特点,并获得了应用。To meet the requirement of high precision temperature measurement in physico-chemical experiment,a digital Beckman thermometer based on Pt1000 driven by constant current source is designed.And the working principle,calibration method,factors influencing the accuracy of temperature measuring system are analyzed.Reasonable setting of circuit parameters according to temperature measurement requirements.The precision of temperature measurement can reach 0.001℃.Debugging and correcting system parameters,The test results show that the accuracy of temperature measurement is improved.The system has the advantages of low power consumption and low cost,and it has been applied.

关 键 词：铂电阻 恒流源 贝克曼温度计 摩尔质量 

分 类 号：TP23[自动化与计算机技术—检测技术与自动化装置]