什么是两线制流量柱塞?什么是两线制?两线制有什么优点?两线制是指现场柱塞与控制室仪表联系仅用两根导线,这两根线既是电源线,又是信号线。两线制与三线制
一次表:1151LT法兰式隔爆柱塞泵,选用法兰式是防止罐底脏物沉淀而堵塞引压管,柱塞量程0~140kPa。
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