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溫度開關(guān)的簡單介紹
一、溫度開關(guān)的工作原理
溫度開關(guān)是一種利用雙金屬片作為感溫元件的開關(guān)，當(dāng)系統(tǒng)設(shè)備正常工作時，雙金屬片處于自由狀態(tài)，觸點則處于閉合或斷開狀態(tài)；當(dāng)溫度逐漸升高到達(dá)動作點時，雙金屬元件會受熱產(chǎn)生力發(fā)生動作，使得電路斷開或者接通，從而起到了保護(hù)作用。反之，當(dāng)溫度逐漸下降，下降到一定值，雙金屬元件又會使觸點閉合，系統(tǒng)設(shè)備開始正常工作。
二、溫度開關(guān)的特點
溫度開關(guān)內(nèi)部常用的是帶毛細(xì)管溫包式傳感器，結(jié)構(gòu)緊湊，性能穩(wěn)定，精度高，動作可靠，使用壽命長，已經(jīng)廣泛在工業(yè)和家用電器中適用。
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