论文部分内容阅读
在检测低气压环境试验设备的过程中,笔者发现了一个现象:在不同的低气压环境条件下,设备的实测温度与设定温度之间的偏差与气压有关联。下面作简要分析。例如,一台低气压环境设备需要在101.3kPa常压条件下检测-40.0℃和60.0℃两个温度点,同时还需在0.4kPa压力条件下测量这两个温度点。得出的结论:常压下测量低温-40.0℃时,设备的几何中心点实测温度为-40.2℃;在测量温度为60.0℃时,设备的几何中心点实测温度为60.4℃。而在0.4kPa压力条件下测量这两个温度时,设备的几何中心点实测温度分别
In the process of detecting low-pressure environment test equipment, I found a phenomenon: under different low-pressure environment conditions, the deviation between the measured temperature and the set temperature of the equipment is related to the air pressure. Below for a brief analysis. For example, a low-pressure environment device needs to detect two temperature points of -40.0 ° C and 60.0 ° C under an atmospheric pressure of 101.3 kPa and measure both temperature points under a pressure of 0.4 kPa. The conclusion is drawn that the measured temperature of the geometric center of the equipment is -40.2 ℃ when measuring the low temperature -40.0 ℃ under atmospheric pressure and the measured temperature is 60.4 ℃ at the measurement temperature of 60.0 ℃. When the two temperatures are measured under a pressure of 0.4 kPa, the measured geometric center points of the device respectively