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優(yōu)勢供應TOGNELLA流量控制閥FT 270/5使用方法
優(yōu)勢供應TOGNELLA流量控制閥FT 270/5使用方法
產(chǎn)品價格：￥6600
上架日期：2024-01-18 12:19:45
產(chǎn)地：山東濟南市
發(fā)貨地：山東濟南
供應數(shù)量：不限
最少起訂：1個
瀏覽量：43
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詳細說明
    優(yōu)勢供應TOGNELLA流量控制閥FT 270/5使用方法
    優(yōu)勢供應TOGNELLA流量控制閥FT 270/5使用方法
    為什么擴散流的方法更好：起泡點值只是一個定性的值，從開始起泡到后的群起泡是一個比較長的過程，不能準確的定量。而測量擴散流值是一個定量值,不但能準確的確定過濾器的完整性，而且還能反應出膜的孔隙率、流量和有效過濾面積等方面的問題，這也就是為什么現(xiàn)在國外廠家都用擴散流法測試完整性的原因。水侵入法測試原理：水侵入法專用于疏水性濾芯的測試，疏水性膜抗拒水，孔徑越小，把水擠入疏水膜中需要的壓力越大。所以在一定的壓力下，測量擠入濾膜中的水流量來判斷濾芯的孔徑。

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    優(yōu)勢供應TOGNELLA流量控制閥FT 270/5使用方法
    一為主機組，另一為輔助機組，在降溫速率較大時，兩組機組同時工作，在溫度保持階段初期，兩組機組依然同時工作。待溫度初步穩(wěn)定下來，輔助機組停止工作，由主機組來維持溫度的穩(wěn)定。如果主機組泄露，會使主機組的制冷效果不大，由于降溫過程中，兩機組同時工作，故沒有溫度穩(wěn)定不住的現(xiàn)象，而指示降溫速率降低。在溫度保持階段，一旦輔助機組停止工作，主機組又無制冷作用，試驗箱內(nèi)的空氣就會緩慢上升，當溫度上升到一定程度，控制系統(tǒng)就會啟動輔助機組來降溫，將溫度下降至設定值附近，然后輔助機組又停止工作，如此反復。
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