選型應用方向須知：

1，廣泛應用于電力、化工和醫藥等行業中，這些儀表往往涉及到工業安全和貿易結算等，因此，客觀科學的評價它們的性能，確保計量性能的準確性和可靠性是非常重要的。由于受限于標準器的性能等諸多因素，目前針對微差壓型壓力變送器的計量仍是按照表壓的形式進行，即在高壓端(H端)施加壓力，低壓端(L端)通大氣，以大氣壓作為參考靜壓來測量。

] widely used in power, chemical and pharmaceutical industries, these instruments often involve industrial security and trade settlement, so it is very important to evaluate their performance objectively and scientifically to ensure the accuracy and reliability of measurement performance. Due to many factors such as the performance of standard equipment, the measurement of micro-differential pressure pressure transmitter is still conducted in the form of table pressure, that is, pressure is applied at the high pressure end (H end) and the low pressure end (L end) is connected to the atmosphere, and atmospheric pressure is taken as the reference static pressure to measure

在某些情況下，通過從低壓端輸入正壓(高壓端通大氣)來模擬負壓測量。而實際使用工況

n some cases, negative pressure measurements are simulated by inputting positive pressure (high pressure through the atmosphere) from the low pressure end. But actual use condition

華恒儀表實現了核心技術的從無到有，不斷地提高工業自動化儀表的度，儀表性能標準對標技術，完成產品迭代升級，滿足用戶需求的個性定制。
未來，華恒儀表將繼續秉承一輩子做好一件事的“工匠華恒儀表將繼續輩子做好一件事的“工匠精神”，邊生產邊科研，研發團隊通過在各種不同環境下對儀表進行無數次的試驗，不斷豐富技術，完善產品性能，將工業自動化儀表做成推動我國工業發展的經濟耐用產品，成為國內儀表行業者。