新版QJ57B數字直流雙臂電橋廠家現貨出售
QJ57B數字電橋是新一代電線、電纜直流電阻的測試儀器，是QJ44、QJ57的更新換代產品。電橋采用Σ―△型A/D轉換原理，具有測量精度高、數字濾波、快速平均及自動校準等特點。電橋采用5位半LED顯示，可直讀電阻測量數據,操作方便、攜帶方便、讀數直觀、測量精度高、穩定性好。還可以用來測試開關、接插件、繼電器的觸點電阻；車、船、飛機的金屬鉚接電阻。 
新版QJ57B數字直流雙臂電橋廠家現貨出售
一、 主要技術參數： 
1、測量范圍：0-200Ω 
2、zui小分辨率：1μΩ 
3、準確度：±（0.05%Rx+0.05%Rm） 
4、各量程主要參數見表1： 
（溫度20℃±0.5℃、相對濕度40%-60%） 
量程 測試電流 分辨率 測量范圍 基本誤差 
20mΩ 1A 1μΩ 0-20.000mΩ ±（0.1%Rx+0.15%Rm） 
200mΩ 0.5A 1μΩ 0-200.000mΩ ±（0.05%Rx+0.1%Rm） 
2Ω 100mA 10μΩ 0-2.00000Ω ±（0.05%Rx+0.05%Rm） 
20Ω 100mA 100μΩ 0-20.0000mΩ  
200Ω 10mA 1mΩ 0-200.000Ω  
備注：20mΩ檔為4位半顯示，200mΩ-200Ω檔為5位半顯示。 
5、電源：AC220V±22V50HZ±1.5HZ 
6、外形尺寸：383*296*166mm 
7、重量約：4Kg 

二、 操作方法 
1.將電源線插入AC220V插座，測試線接入電橋C2、P2、P1、C1 
2.將電橋的電源開關合上，電橋顯示“000000” 
3.選擇合適電阻量程（見表2） 
4.按下“測試鍵”，等數據穩定后，就是本次的測量數據，再按下“測試鍵”結束。 
主(zhu)要生產的產品(pin)有：電(dian)子(zi)(zi)萬(wan)能試(shi)驗(yan)(yan)(yan)(yan)(yan)(yan)(yan)機(ji)(ji)(ji)(ji)(ji)，電(dian)子(zi)(zi)拉力試(shi)驗(yan)(yan)(yan)(yan)(yan)(yan)(yan)機(ji)(ji)(ji)(ji)(ji)，微機(ji)(ji)(ji)(ji)(ji)控制(zhi)電(dian)子(zi)(zi)萬(wan)能試(shi)驗(yan)(yan)(yan)(yan)(yan)(yan)(yan)機(ji)(ji)(ji)(ji)(ji)，微機(ji)(ji)(ji)(ji)(ji)控制(zhi)電(dian)子(zi)(zi)拉力試(shi)驗(yan)(yan)(yan)(yan)(yan)(yan)(yan)機(ji)(ji)(ji)(ji)(ji)，換(huan)氣老(lao)化試(shi)驗(yan)(yan)(yan)(yan)(yan)(yan)(yan)箱(xiang)，老(lao)化試(shi)驗(yan)(yan)(yan)(yan)(yan)(yan)(yan)箱(xiang)，空(kong)氣彈(dan)氧彈(dan)老(lao)化箱(xiang)，氧指數測定儀(yi)，恒(heng)溫水浴(yu)，恒(heng)溫油(you)浴(yu)，電(dian)壓擊穿試(shi)驗(yan)(yan)(yan)(yan)(yan)(yan)(yan)儀(yi)，耐高壓試(shi)驗(yan)(yan)(yan)(yan)(yan)(yan)(yan)機(ji)(ji)(ji)(ji)(ji)，灼熱(re)絲試(shi)驗(yan)(yan)(yan)(yan)(yan)(yan)(yan)儀(yi)，針(zhen)焰試(shi)驗(yan)(yan)(yan)(yan)(yan)(yan)(yan)機(ji)(ji)(ji)(ji)(ji)，漏(lou)電(dian)起痕(hen)試(shi)驗(yan)(yan)(yan)(yan)(yan)(yan)(yan)機(ji)(ji)(ji)(ji)(ji)，單根垂(chui)直燃(ran)燒(shao)試(shi)驗(yan)(yan)(yan)(yan)(yan)(yan)(yan)機(ji)(ji)(ji)(ji)(ji)，負載燃(ran)燒(shao)試(shi)驗(yan)(yan)(yan)(yan)(yan)(yan)(yan)機(ji)(ji)(ji)(ji)(ji)，成(cheng)束(shu)燃(ran)燒(shao)試(shi)驗(yan)(yan)(yan)(yan)(yan)(yan)(yan)機(ji)(ji)(ji)(ji)(ji)，耐火試(shi)驗(yan)(yan)(yan)(yan)(yan)(yan)(yan)機(ji)(ji)(ji)(ji)(ji)，煙密度試(shi)驗(yan)(yan)(yan)(yan)(yan)(yan)(yan)機(ji)(ji)(ji)(ji)(ji)，垂(chui)直水平燃(ran)燒(shao)試(shi)驗(yan)(yan)(yan)(yan)(yan)(yan)(yan)機(ji)(ji)(ji)(ji)(ji)，熱(re)穩定試(shi)驗(yan)(yan)(yan)(yan)(yan)(yan)(yan)機(ji)(ji)(ji)(ji)(ji)，二三(san)輪曲(qu)撓(nao)試(shi)驗(yan)(yan)(yan)(yan)(yan)(yan)(yan)機(ji)(ji)(ji)(ji)(ji)，交聯(lian)切片機(ji)，卷繞+扭轉(zhuan)試驗機(ji)，耐磨(mo)試驗機(ji)，高(gao)低(di)溫(wen)試驗箱，恒溫(wen)恒濕箱，紫外老化(hua)(hua)箱，臭氧(yang)老化(hua)(hua)箱，氙燈老化(hua)(hua)箱，刨片機(ji)等。