國產好點的壓力變送器|420ma壓力變送器-華恒變送器廠家微差壓型壓力變送器的基本原理是：將一個空間用敏感元件（如膜盒）分割為兩個壓室，即正壓室和負壓室；分別向兩個壓室中引入壓力時，傳感器在正壓和負壓的共同作用下，產生一定的位移或者位移的趨勢，這個位移（位移趨勢）與兩個壓室的壓力差成正比，通過內部轉換電路將位移量轉換為反應差壓大小的標準的信號輸出，通常輸出的信號為標準的4～20m A電流信號。

國產好點的壓力變送器|420ma壓力變送器-華恒變送器廠家在實際構造中，敏感元件的結構、轉換方式、標準信號等都有很多種。結構方面：有電阻應變片、壓阻式、電感式、電容式、諧振式等，但一般情況下都采用壓阻式微差壓型壓力變送器，因為它具有價格低、線性好、便于維修、遷移量大、較高的精度等特性。轉換方式：根據采用不同的傳感器會有不同的轉換方式，但可以肯定的是終都是轉換為電信號。標準信號：在目前生產中有電流信號、電壓信號兩種，通常采用的是4～20m A電流信號。

The basic principle of micro-differential pressure transmitter is that a space is divided into two pressure Chambers (positive pressure chamber and negative pressure chamber) with sensitive elements (such as diaphragm). Respectively to the two pressure chamber pressure, is introduced into the sensor in the positive pressure and negative pressure, under the joint action of produce certain displacement or displacement trend, trend (displacement) and the displacement is directly proportional to the pressure difference of the two pressure chamber, through internal conversion circuit converts displacement response differential pressure standard signal output, and the size of output signal usually for 4 ~ 20 m A standard current signal.
In the actual construction, there are many kinds of sensor structure, conversion mode, standard signal and so on. Structure: resistance strain gauge, piezoresistive type, inductance type, capacitive type, resonant type, etc., but generally used piezoresistive type differential pressure transmitter, because it has low price, good linearity, easy maintenance, large migration, high precision and other characteristics. Conversion mode: there will be different conversion modes depending on the use of different sensors, but it is certain that they will eventually be converted into electrical signals. Standard signal: there are two kinds of current signal and voltage signal in current production, which are usually 4-20m A current signal.

國產好點的壓力變送器|420ma壓力變送器-華恒變送器廠家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。