袁州區(qū)ZR-KC-FVPR(K型補償導線生產工藝)造成的測量誤差大致等于上述溫差。以K分度號的鎳鉻-鎳硅熱電偶為例，當t1=50℃，t2=20℃時，如熱端溫度為1000℃，則顯示溫度僅969℃，誤差達31℃。
實際應用時，由于熱電偶參比端的接線盒通常暴露在大氣中，溫度變化較大，如不采取措施，接線盒內溫度既不可能為零，也不可能保持某個溫度恒定不變，由此引起測量誤差。由于與熱電偶相連的二次儀表（如顯示器、記錄儀）、I/O插卡等均帶環(huán)境溫度補償，可對這些裝置與熱電偶的接線點（即儀表接線端）溫度t2進行補償。袁州區(qū)ZR-KC-FVPR(K型補償導線生產工藝)由此可見，關鍵是如何對熱電偶的參比端溫度t1進行補償。目前有多種參比端補償方法，如恒溫法、補償電橋法、補償熱電偶法、補償導線法等，但zui常用的就是補償導線法。本文首先敘述補償導線的原理和分類，然后介紹補償導線應用中通常需要了解的幾個問題。
在型號中普通級的不標，精密級的加"S"表示。從工作溫度分一般用和耐熱用，一般用工作溫度為0~100℃（少數(shù)為0~70℃）;耐熱用工作溫度為0~200℃。此外，可以線芯多少分為單股和多芯（軟線）補償導線，以是否帶屏蔽層分為普通型和屏蔽型補償導線，還有于防爆場合的本質安全電路用的補償導線。袁州區(qū)ZR-KC-FVPR(K型補償導線生產工藝)
補償導線儀表盤接線點的位置我們知道，補償導線只是把熱電偶的參比端延長，起到移動參比端位置的作用，延伸后的參比端溫度應當恒定或配用本身具有參比端溫度自動補償?shù)难b置，否則仍可能因新的參比端溫度變化引起測量誤差。比如在儀表盤內接線時，由于常用盤裝顯示器、記錄儀本身因通電而發(fā)熱

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