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壓力變送器與溫度變送器之間的聯系

作者:華恒儀表 發布日期: 2024-04-26 二維碼分享

  一、壓力變送器
 
  1.Pressure transmitter
 
  壓力變送器也稱差壓變送器,主要由測壓元件傳感器、模塊電路、顯示表頭、表殼和過程連接件等組成。它能將接收的氣體、液體等壓力信號轉變成標準的電流電壓信號,以供給指示報警儀、記錄儀、調節器等二次儀表進行測量、指示和過程調節。
 
  Pressure transmitter is also called differential pressure transmitter,which is mainly composed of pressure measuring element sensor,module circuit,display meter,watch case and process connection.It can convert the received gas,liquid and other pressure signals into standard current and voltage signals to provide secondary instruments such as indicating alarms,recorders,regulators,etc.for measurement,indication and process adjustment.
 
  壓力變送器的測量原理是:流程壓力和參考壓力分別作用于集成硅壓力敏感元件的兩端,其差壓使硅片變形(位移很小,僅μm級),以使硅片上用半導體技術制成的全動態惠斯登電橋在外部電流源驅動下輸出正比于壓力的mV級電壓信號。由于硅材料的強性優良,所以輸出信號的線性度及變差指標均很高。工作時,壓力變送器將被測物理量轉換成mV級的電壓信號,并送往放大倍數很高而又可以互相抵消溫度漂移的差動式放大器。放大后的信號經電壓電流轉換變換成相應的電流信號,再經過非線性校正,校正后產生與輸入壓力成線型對應關系的標準電流電壓信號。
 
  The measuring principle of the pressure transmitter is:the process pressure and the reference pressure respectively act on the two ends of the integrated silicon pressure sensitive element,and the differential pressure causes the silicon wafer to deform(the displacement is very small,onlyμm level),so that semiconductors are used on the silicon wafer The fully dynamic Wheatstone bridge made by the technology outputs a mV-level voltage signal proportional to the pressure under the drive of an external current source.Due to the excellent strength of silicon material,the linearity and variation index of the output signal are both high.When working,the pressure transmitter converts the measured physical quantity into a mV-level voltage signal and sends it to a differential amplifier with a high amplification factor that can offset temperature drift.The amplified signal is converted into a corresponding current signal by voltage and current conversion,and then after nonlinear correction,a standard current and voltage signal corresponding to the input pressure in a linear relationship is generated after correction.

 
  二、一體化溫度變送器
 
  2.Integrated temperature transmitter
 
  一體化溫度變送器一般由測溫探頭(熱電偶或熱電阻傳感器)和兩線制固體電子單元組成。采用固體模塊形式將測溫探頭直接安裝在接線盒內,從而形成一體化的變送器。一體化溫度變送器一般分為熱電阻和熱電偶型兩種類型。
 
  The integrated temperature transmitter generally consists of a temperature measuring probe(thermocouple or thermal resistance sensor)and a two-wire solid electronic unit.The temperature measuring probe is directly installed in the junction box in the form of a solid module to form an integrated transmitter.Integrated temperature transmitters are generally divided into two types:thermal resistance and thermocouple.
 
  一體化溫度變送器的輸出為統一的4~20mA信號;可與微機系統或其它常規儀表匹配使用。也可用戶要求做成防爆型或防火型測量儀表。
 
  The output of the integrated temperature transmitter is a unified 4-20mA signal;it can be matched with a computer system or other conventional instruments.It can also be made into explosion-proof or fire-proof measuring instruments as required by users.
 
  以上就是關于“壓力變送器與溫度變送器之間的聯系”詳細概述,如有關于變送器方面的問題咨詢,請聯系我們!
 
  The above is a detailed overview of"the connection between pressure transmitter and temperature transmitter",if you have any questions about the transmitter,please contact us!


       相關資訊:2088擴散硅壓力變送器生產廠家


 
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