摘要
本文提出了一种自动测试温变器的新方法及系统,着重介绍了温变器测试系统的整体方案及软,硬件的实现方法.该系统运行稳定,测量精度优于0.5‰,从而解决了目前无法做到的温变器高精度自动测试的难题.
In this paper, we provide a new method for testing thermocouple temperatvre transmitter and the corresponding system. We mainly discuss the general scheme of the system and the realization method of hard ware, soft ware. The system works well and its precision is superior to 0.05%, therefore the difficult problem about high precision testing thermocouple temerature transmitter has been solved.
关键词
温度变送器
测试系统
热电偶
Thermo-electric couplers, Interface circuit, Nonlinearity
