求翻译：本工程微正压装置设计为三只压力控制器，且IPB三相外壳已连通，也就是说三只压力控制器正常显示应相当，由于在IPB运行之前微正压装置已经调试结束，说明电气功能正常，如果由于某一个压力控制器损坏，首先有高压报警输出到DCS,另外还有两只压力控制器仍正常显示，此时需要检查压力控制器是否损坏。是什么意思？

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This project is pressure unit design micro-for three pressure controller and three-phase IPB enclosure has connectivity, i.e. three pressure controller should be equivalent to that of a normal display because the IPB before running micro-positive pressure device has been the end of the debugging, el

This project micro positive pressure installment design is three pressure controllers, also the IPB three-phase outer covering connect, in other words, three pressure controller normal demonstration should quite, because before IPB movement the micro positive pressure installment already debugged en

正在翻译，请等待...

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