高壓電橋介電常數測試儀的工作原理以及維修保養方法
高壓電(dian)(dian)橋介(jie)電(dian)(dian)常(chang)數測試儀是(shi)由二(er)只測微電(dian)(dian)容(rong)(rong)(rong)器(qi)組成，平板電(dian)(dian)容(rong)(rong)(rong)器(qi)一般用(yong)來(lai)夾持(chi)被(bei)測樣品，園(yuan)筒(tong)電(dian)(dian)容(rong)(rong)(rong)器(qi)是(shi)一只分辨(bian)率高達0.0033pF的(de)線性可(ke)變(bian)(bian)電(dian)(dian)容(rong)(rong)(rong)器(qi)，配用(yong)儀器(qi)作為指示儀器(qi)，絕緣材(cai)料的(de)損耗角正切值(zhi)是(shi)通(tong)過被(bei)測樣品放進(jin)平板電(dian)(dian)容(rong)(rong)(rong)器(qi)和不放進(jin)樣品的(de)Q值(zhi)變(bian)(bian)化(hua)，由園(yuan)筒(tong)電(dian)(dian)容(rong)(rong)(rong)器(qi)的(de)刻度讀(du)值(zhi)變(bian)(bian)化(hua)值(zhi)而(er)(er)換(huan)算(suan)得到的(de)。同時(shi)，由平板電(dian)(dian)容(rong)(rong)(rong)器(qi)的(de)刻度讀(du)值(zhi)變(bian)(bian)化(hua)而(er)(er)換(huan)算(suan)得到介(jie)電(dian)(dian)常(chang)數。
高壓電橋介電常數測試儀維修保養
高壓電橋介電常(chang)數測試儀是由精密機械(xie)構件組(zu)成的(de)(de)測微設備(bei)，所以在使(shi)用和保(bao)(bao)存(cun)時要(yao)避(bi)免(mian)振動和碰撞，要(yao)求(qiu)在不(bu)含(han)腐(fu)蝕氣體和干(gan)燥的(de)(de)環(huan)境中使(shi)用和保(bao)(bao)存(cun)，不(bu)能自行拆裝，否則(ze)其(qi)工作(zuo)性能就不(bu)能保(bao)(bao)證，如測試夾具受(shou)到碰撞，或者作(zuo)為定期檢(jian)查，要(yao)檢(jian)測以下幾個指標：
1. 平(ping)板電容器二極片平(ping)行度不超過0.02mm。
2. 園筒電容器的(de)軸(zhou)和(he)軸(zhou)同(tong)心(xin)度誤差不超(chao)過0.1mm。
3. 保證(zheng)二(er)個測微(wei)桿0.01mm分辨(bian)率。
4. 用精(jing)密電容(rong)測(ce)量儀(±0.01pF分辨率)測(ce)量園筒(tong)電容(rong)器，電容(rong)呈(cheng)線性率，從0~20mm，每隔1mm測(ce)試一點，要求符合工作(zuo)特性要求。
