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              有哪些原因可以引起中控卡件壓力信號異常?

              2021-12-04 13:25:23 來源:http://www.eboudy.com/ 53

              A:壓力信號出現滿量程情況,與實際不符。斷開卡件后面的信號線正,信號由滿量程變仍有8公斤左右壓力信號(量程為0-13公斤)。經現場觀察,該測點經過全。將信號線短路,不過安柵后,信號顯示正常。
              A: The pressure signal is in full scale, which is inconsistent with the actual situation. Disconnect the positive signal line behind the card, the signal changes from full scale to about 8kg pressure signal (the range is 0-13kg). According to field observation, the measuring point has passed through the whole process. Short circuit the signal line, but the signal display is normal after the safety barrier.
              初步判斷是安柵出現問題。原因可能是同一組的信號,安柵是共地的。當安柵故障后,另一毫安信號耦合到該信號上來,造成信號的干擾。
              It is preliminarily judged that there is a problem with the safety barrier. The reason may be that the signals of the same group are grounded. When the barrier fails, another Ma signal is coupled to the signal, causing signal interference.
              熱電阻信號不準如何排查?
              How to check the inaccurate thermal resistance signal?
              A:首先,檢查熱電阻的組態,確認了組態中的熱電阻型號和實際的型號保持一致;其次,確保上下位機組態一致。然后,如果還是懷疑測溫有問題的話,可以測量現場熱電阻A和B之間的阻值為R1;B和C之間的阻值為R2。
              A: Firstly, check the configuration of thermal resistance and confirm that the thermal resistance model in the configuration is consistent with the actual model; Secondly, ensure that the upper and lower computer configurations are consistent. Then, if it is still suspected that there is a problem with temperature measurement, the resistance between on-site thermal resistance a and B can be measured as R1; The resistance between B and C is R2.
              根據3線制熱電阻的測溫原理,可以得到熱電阻的實際電阻值為R1-2R2。然后查表找出對應的溫度。然后用這個溫度和監控上的溫度再進行比較。如果出入較大,請更換卡件后再次嘗試。
              According to the temperature measurement principle of 3-wire thermal resistance, the actual resistance value of thermal resistance can be obtained as r1-2r2. Then check the table to find out the corresponding temperature. Then compare this temperature with the temperature on the monitor. If the access is large, please replace the card and try again.
              以上就是浙大中控DCS卡件http://www.eboudy.com為大家介紹的中控卡件壓力信號異常原因的分析排查內容,感謝您在百忙之中查看我公司的信息內容,如果您想要了解的更多,歡迎您來電進行咨詢!
              The above is the central control DCS card of Zhejiang University http://www.eboudy.com I'd like to introduce the analysis and troubleshooting of the causes of abnormal pressure signal of central control card. Thank you for checking the information of our company in your busy schedule. If you want to know more, you are welcome to call for consultation!
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