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目前低压电器作温升测定时,一般都采用热电偶法、即用电位差汁或数字电压表测出热电偶两端的电位差,然后,通过查表,计算求得温升。在测试点数较多的情况下,测试人员的工作量就很大,而且还存在着人为的读数误差和计算误差。针对这种情况,我们研制了温度巡回检测仪。它以TP801单板机为主体,可自动对126个测试点进行巡回检测,由打印机直接打印出温升值,同时对该点温发是否稳定或是否越限作出相应标记。其温度测量范围为0℃～100℃,分辨率为0.025℃,采样速度每点1.5秒。
At present, low-voltage electrical appliances for temperature measurement, the general use of thermocouple method, that is, with potential difference juice or digital voltmeter to measure the potential difference between the thermocouple, and then, through the look-up table, calculate the temperature rise. In the case of a large number of test points, the workload of testers is great, but there are also human error and calculation of reading errors. In response to this situation, we developed a temperature circuit tester. It TP801 single-board machine as the main body, can automatically test the test point of 126 tour by the printer directly prints the temperature rise value, while the point of hair temperature is stable or whether the more the corresponding mark. The temperature measurement range of 0 ℃ ~ 100 ℃, resolution of 0.025 ℃, sampling rate of 1.5 seconds per point.