一种高精度智能温度表校验仪的研制

A High Accuracy Intelligent Thermometer Checking Instrument

为了方便现场温度二次仪表的快速校验,设计了一种高精度的、便携式的、能够输出电压信号的温度校验仪,能够根据现场二次仪表的不同,模拟多种不同分度号热电偶输出,校验仪的电压输出采用了时分割脉冲调宽技术,极大的提高了输出精度,可做为计量检测部门的温度量值传递工具。

In order to facilitate the field temperature second meter calibration, a high precision, portable, able to output voltage signal temperature calibrator is designed. According to the different scene of second meters, multiple different types of thermocouple are simulated. The output of calibrator adopts the time division pulse width modulation technology. It greatly improves the output precision and can be used for measuring sector temperature value transfer tool.