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DPharp EJX 是橫(heng)河(he)電機(ji)開發的(de)(de)差壓變送器，采用(yong)經現場驗(yan)證的(de)(de)高性(xing)能智能單晶硅諧振式傳感器技術。用(yong)一個傳感器即可同時測量(liang)差壓和靜壓，提供高精(jing)度和的(de)(de)長期(qi)穩(wen)定性(xing)。DPharp EJX 通過了SIL2認(ren)證。

橫河差壓變送(song)器采用熱電(dian)(dian)(dian)(dian)偶、熱電(dian)(dian)(dian)(dian)阻作為測(ce)溫元件，從測(ce)溫元件輸出信(xin)號送(song)到變送(song)器模塊(kuai)，經(jing)過(guo)穩壓濾波、運算放大、非線性校正、V/I轉(zhuan)換、恒流及(ji)反向保護等電(dian)(dian)(dian)(dian)路處理后，轉(zhuan)換成與溫度成線性關(guan)系的4～20mA電(dian)(dian)(dian)(dian)流信(xin)號輸出。