动圈式温度显示仪表在热处理行业中广泛使用。因为动圈仪表的精度较低,有必要经常给以校验。本文介绍一种可谓是最简单的现场校验此类仪表的方法-用标准直流电位差计模拟热电偶输出标准电势。线路由图1所示。直流电位差计处于“输出”工作状态,其输出等效电路在表示电位差计的虚线 Dynamic temperature display instrument in the heat treatment industry widely used. Because of the low accuracy of moving coil instruments, it is necessary to give frequent verification. This article describes one of the easiest ways to calibrate such instruments in the field - using a standard DC potentiometer to simulate thermocouple output standard potentials. The line is shown in Figure 1. DC potentiometer in the “output” working state, the output equivalent circuit in the dotted line that represents the potentiometer