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使用高准科里奥利流量计来自动化控制液态氨流量- Better Control Flow Rate of Liquid Ammonia

应用 一家化学公司通过将液态氨和其他两种化学制品化合起来生产一种最终产品。为了保持液态氨的液化状态，必须对氨进行加压。根据储罐的容积大小，管线压力变化的范围在60 psi和100 psi 之间。 烦恼和挑战 工厂场地里的装载卡车所产生的振动影响了地秤的标定，从而导致不能精确地测量液态氨给料并且需要每年对磅秤系统进行至少两次昂贵的重新标定。 由于中间产品给料流量变化的范围很大，因此必须对氨流量进行相应地调节。氨供应罐的重量由磅秤监控，每分钟向数字控制系统(DCS)发送一次4-20 mA... Read the full text.

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