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關于差壓變送零位問題

發布日期:2017-11-24 13:54

 
 
 
無論放任何位置,零位都不一樣,于是我放在石平板上,也是處處不相同,最大相差0.05mA,請教如何定好小壓力的零位。
1、檢定或校準時,被檢儀表的安裝應盡量保持與儀表工作狀態一致,甚至可以模擬環境。
 
2、對于部分低準確度的被檢儀表,其放置位置會對測量結果有一定的影響,我們不必為此糾結,只要其值在該儀表的允差范圍內,我們都可以進行判定,低準確度儀表的數字有效位數也較少。
 
3、微小壓力對環境變化非常敏感,溫度、微風、放置位置等都會使儀表產生差異。即使環境基本不變,多個循環測量的數值也可能不一致,這和檢定環境、檢定設備、檢定人員等都有相關性。
 
希望以上內容對你有所幫助,如果您有任何問題歡迎隨時聯系我們。
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