微壓氣體壓力源的操作

        升壓過(guo)程的檢定：

       1.先將升降壓手柄旋至最(zui)外端，檢(jian)查(cha)儀表接口處(chu)是否放有(you)密封圈(quan)。

      2.連接被檢儀表及(ji)標(biao)準(zhun)儀表，將排氣閥擰(ning)緊(jin)。

      ; 3.順時針緩緩旋轉升降(jiang)壓手柄，壓力(li)(li)接近第一(yi)個檢定(ding)(ding)點，然后旋轉微(wei)調手柄，使(shi)壓力(li)(li)完全(quan)調定(ding)(ding)在該檢定(ding)(ding)點。

     4.記錄該點的標準(zhun)與(yu)被檢(jian)的數據。

     5.再次緩(huan)緩(huan)順時(shi)針(zhen)旋(xuan)轉升降(jiang)壓手柄，進行第二點(dian)的(de)檢定。

       6.依(yi)次升壓(ya)直(zhi)到(dao)被(bei)檢儀表的上限（滿(man)量(liang)程）。

      降(jiang)壓過程的檢定(ding)：

     1.逆時針旋轉升(sheng)降壓手(shou)柄(bing)，壓力接近回檢過程的第一個檢定(ding)點，旋轉微(wei)調(diao)手(shou)柄(bing)，使壓力完全(quan)調(diao)定(ding)在該檢定(ding)點。

      2.記(ji)錄該點的標準與被檢數(shu)據。

     3.再次逆時針(zhen)旋(xuan)轉升降(jiang)壓(ya)手柄，進行第二(er)個回(hui)程檢(jian)(jian)定點(dian)的(de)檢(jian)(jian)定。

     4.零點檢(jian)定：回程(cheng)檢(jian)定結束時，應(ying)將排氣(qi)閥打開(kai)，進行零點檢(jian)定。負壓(ya)表的檢(jian)定：負壓(ya)表檢(jian)定，應(ying)將升(sheng)降壓(ya)手柄旋至(zhi)最里(li)端，然后連接標準與被檢(jian)儀表，關閉排氣(qi)閥。逆時針旋轉升(sheng)降壓(ya)手柄，進行各檢(jian)定點的檢(jian)定。

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