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裝配式熱電偶是工業生產中常用的一種溫度儀表主要應用於測量,可以測量蒸汽、氣體、液ye體ti及ji固gu體ti表biao麵mian的de溫wen度du。裝zhuang配pei式shi熱re電dian偶ou在zai使shi用yong的de過guo程cheng中zhong也ye是shi會hui受shou到dao幹gan擾rao的de,可ke以yi直zhi接jie影ying響xiang測ce量liang的de結jie果guo,那na麼me有you什shen麼me抗kang幹gan擾rao的de方fang法fa呢ne?下xia麵mian中zhong國guo傳chuan感gan器qi交jiao易yi網wang小xiao編bian就jiu來lai具ju體ti介jie紹shao一yi下xia裝zhuang配pei式shi熱re電dian偶ou抗kang幹gan擾rao的de方fang法fa。
1、把熱電偶參考端接地。在裝配熱電偶(或補償導線)輸出端的一端,通過一個足夠大的電容接電;
2、把熱電偶測量端接地。從裝配熱電偶測量端引出一根金屬絲,直接接地。
3、用屏蔽的方法,可使泄露電流經過金屬屏蔽物直接接地,不在流入測量回路,從而消除幹擾引起的測量誤差;
4、把熱電偶的補償引線敷設在鐵管內,並將鐵管接地,如果把熱電偶補償引線絞合起來,效果更好;
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