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1.计量不准确电子计量系统是沥青拌和站主要的控制系统。笔者曾遇到一套搬迁刚安装完毕的沥青拌和站在调试中并没有发现明显异常,但生产时却发生沥青计量系统不准确的故障。故障表现:沥青秤上没有加沥青时,从控制主机的显示器显示沥青数量一会儿为负的几十公斤,一会儿为正的几公斤。所以即使秤上添加沥青,也会与目标量有很大差异,使计量失去意义。当时怀疑沥青秤称重传感器有故障,可检查了沥青秤上相互并联的3个称重传感器后,
1. Inaccurate measurement Electronic metering system is the main control system of asphalt mixing plant. I have encountered a set of relocation just installed the asphalt mixing station debugging did not find significant abnormalities, but the production occurred when the asphalt metering system inaccurate failure. Failure performance: Asphalt scale is not added asphalt, the display from the control panel displays a while for a while the number of negative tens of kilograms, while positive for a few kilograms. Therefore, even if asphalt is added to the scale, there will be a great difference between the target amount and the measurement, so that the measurement will lose its meaning. At that time suspected asphalt scale load cell failure, can check the asphalt scale parallel to each other after the three load cells,