本文所介绍的是一种新型灰位传感器,是针对灰料容器中(如除尘器灰斗内)气体压力为正压或负压的特点而设计出的,对其进行了理论和实验研究,结果表明,理论计算值与实验数据吻合良好;该传感器滞后时间短,复现性好,无功耗,结构简单,运行可靠. This paper introduces a new type of gray-level sensor, which is designed for the characteristics of the gas pressure in the gray material container (such as the dust collector inside the hopper) to be positive pressure or negative pressure. The theoretical and experimental studies are carried out, The results show that the theoretical calculated values ​​are in good agreement with the experimental data. The sensor has short lag time, good reproducibility, no power consumption, simple structure and reliable operation.