我厂自动添加白灰(石灰乳)、浮选机用的油药和生产用的水池等液面,广泛地采用了晶体管液面控制器。这种控制器与过去使用的机械浮子式液面控制器比较,它具有动作可靠、工作稳定、维护和检修方便等优点。下面仅就我厂生产用水池水位自动控制作一说明(见附图)。在水池中设A、B、C三个电极。当水池中水位高于A电极时,晶体管BG因获得偏流而导通,灵敏继电器常开接点闭合,常用接点打开, I plant automatically add lime (milk of lime), flotation machine used in the production of oil and other liquid pool, widely used transistor level controller. Compared with the mechanical floater type liquid level controller used in the past, the controller has the advantages of reliable operation, stable operation, convenient maintenance and overhaul, and the like. The following only I plant production pool water level automatic control to make a description (see photo). In the pool set A, B, C three electrodes. When the water level in the pool is higher than the A electrode, the transistor BG is turned on due to the bias current, the normally open contact of the sensitive relay is closed, the common contact is opened,