positive pressure differential 中文意思是什麼
positive pressure differential
解釋
正壓差- positive : adj 1 確實的，明確的；確定的；無條件的 （opp qualified implied inferential）; 絕對的，無疑問的，...
- pressure : n 1 壓；按；擠；榨。2 【物理學】壓力，壓強；大氣壓力；電壓。3 精神壓力，政治[經濟、輿論等]壓力。4...
- differential : adj 1 差別的，區別的；特定的。2 【數學】微分的。3 【物、機】差動的，差速的，差示的。n 1 （鐵路不...
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Function of three valve units is take signal from lead pressure point introduce the positive - negative pressure measuring container of transmitter, to realize on or off between lead pressure point and measuring container, and on off between positive and negative pressure container, also can use as differential pressure balance check zero and when remove transmitter as cut - off valve
三閥組的作用是從引壓點將信號引入變送器的正負壓測量容室，實現引壓點與測量容室之間接通或斷開，以及正負壓測量容室之間接通或斷開，亦可作為差壓平衡檢測零點用和卸變送器時作截止閥用。
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