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广东梅县丙村铅锌矿选矿厂使用的自动取样机是直接带负荷启动的循环往复运动的取样机,每台用一个晶体管时间继电器实行自动控制,各台机的定时装置集中安装在同一个操作台上进行远距离自动控制。晶体管时间继电器是取样机自动化装置的一个重要元件,但对于直接带负荷启动的自动取样机,要求晶体管时间继电器的质量要好、灵敏度要高。1989年3月,我矿购进上海大众厂制造的5个晶体管时间继电器,由于质量不好,灵敏度又差,使用没多久,有的才使用两天便不能继续使用,经拆换零件后,灵敏度差,磁滞现象造成在单位时间内取
Guangdong Meixian C village, lead-zinc ore dressing plant using automatic sampling machine is directly loaded with a load cycle of reciprocating motion sampler, each with a transistor time relay implementation of automatic control, the timing of the machine installed in a centralized operation in the same operation Taiwan for long-distance automatic control. Transistor time relays are an important component of sampler automation, but require a transistor time relay of good quality and sensitivity for an autosampler that starts directly with a load. In March 1989, I purchased 5 transistor time relays manufactured by Shanghai Volkswagen Mine, and due to poor quality and poor sensitivity, the mine did not take long to be used and some of them could not be used for two days. After the replacement of parts, Sensitivity is poor, resulting in hysteresis within the unit time to take