產品介紹

產品概述

本測(ce)試(shi)儀(yi)采用變(bian)頻(pin)(pin)電源(yuan)技術(shu)，利用單(dan)片機和電子(zi)技術(shu)進行(xing)自動(dong)頻(pin)(pin)率(lv)變(bian)換(huan)、模/數轉換(huan)和數據運算，測(ce)試(shi)速(su)度快、精度高、操作簡便的功能。

技術指標

1、試驗環境(jing)溫度：10℃～30℃（LCD液晶屏應避(bi)免長時間日(ri)照）

2、相對(dui)濕度：20%～80%

3、供電電源：工頻介電常數試驗儀電(dian)壓：220V±10%

4、外形(xing)尺(chi)寸：長*寬*高=470mm*320mm*360mm

5、重量：16kg

6、輸出(chu)功率：1.5KVA

7、顯示分辨率：3位(wei)、4位(wei)（內部全是(shi)6位(wei)）

8、測(ce)試方法：正接法、反接法、外(wai)接試驗電壓法

9、測量范圍：內(nei)接試驗(yan)電(dian)壓：

tgδ：99.9%

Cx ：50 pF＜Cx（2.5KV）＜0.3UF

2.5KV  Cx＜0.3uF

0.5KV Cx＜1.5uF

外接試驗電壓：

由外接試驗變壓器輸出功率而定(ding)

10、基本測量誤差(cha)：介(jie)質(zhi)損(sun)耗（tgδ）：1%±0.09%

電容容量(liang)（Cx）：1.5%±1pF

11、分(fen)辨(bian)率： tgδ：0.01%

Cx ：0.1pF

12、試樣(yang)要求(qiu)：直徑為(wei)50MM、100MM、38MM

并(bing)使(shi)在(zai)(zai)測(ce)(ce)量(liang)電(dian)(dian)(dian)(dian)(dian)阻(zu)時不(bu)產(chan)生(sheng)電(dian)(dian)(dian)(dian)(dian)場干(gan)擾(rao)。例如熱電(dian)(dian)(dian)(dian)(dian)偶可(ke)直接插到(dao)電(dian)(dian)(dian)(dian)(dian)極的(de)(de)孔中(zhong)，孔的(de)(de)底部(bu)盡(jin)可(ke)能接近(jin)試(shi)樣(yang)（見圖Do可(ke)在(zai)(zai)電(dian)(dian)(dian)(dian)(dian)極的(de)(de)反面(mian)垂直于(yu)試(shi)樣(yang)表面(mian)鉆孔，或在(zai)(zai)墊(dian)板的(de)(de)側(ce)面(mian)平行于(yu)試(shi)樣(yang)表面(mian)鉆孔，熱電(dian)(dian)(dian)(dian)(dian)偶裝在(zai)(zai)電(dian)(dian)(dian)(dian)(dian)極內(nei)時，因接線的(de)(de)絕(jue)(jue)緣(yuan)在(zai)(zai)烘箱內(nei)承受熱，使(shi)絕(jue)(jue)緣(yuan)電(dian)(dian)(dian)(dian)(dian)阻(zu)降低而影響測(ce)(ce)量(liang)，由于(yu)，電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)測(ce)(ce)量(liang)儀表和(he)電(dian)(dian)(dian)(dian)(dian)源之(zhi)間(jian)的(de)(de)回路(lu)是接地(di)的(de)(de)（試(shi)樣(yang)的(de)(de)兩邊都對(dui)地(di)絕(jue)(jue)緣(yuan)），若在(zai)(zai)電(dian)(dian)(dian)(dian)(dian)源上構(gou)成(cheng)一(yi)個不(bu)太大(da)的(de)(de)電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)流(liu)(liu)失(shi)，則高電(dian)(dian)(dian)(dian)(dian)位(wei)(wei)接線和(he)地(di)電(dian)(dian)(dian)(dian)(dian)位(wei)(wei)之(zhi)間(jian)的(de)(de)電(dian)(dian)(dian)(dian)(dian)導可(ke)忽略，低電(dian)(dian)(dian)(dian)(dian)位(wei)(wei)接線和(he)地(di)電(dian)(dian)(dian)(dian)(dian)位(wei)(wei)之(zhi)間(jian)的(de)(de)電(dian)(dian)(dian)(dian)(dian)導組成(cheng)一(yi)個電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)測(ce)(ce)量(liang)儀器并(bing)聯的(de)(de)分流(liu)(liu)器。測(ce)(ce)量(liang)電(dian)(dian)(dian)(dian)(dian)極的(de)(de)對(dui)地(di)電(dian)(dian)(dian)(dian)(dian)阻(zu)應比電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)測(ce)(ce)量(liang)儀表的(de)(de)輸入電(dian)(dian)(dian)(dian)(dian)阻(zu)高10-100倍

工頻介電常數試驗儀