ng>項    目ng>

ng>ETCR2000B（老款）ng>

ng>ETCR2000B+（新款）ng>

ng>產品圖片ng>

ng> ng>

ng> ng>

ng>開機時間ng>

ng>自檢需6秒，開機時間長容易造成開機錯誤。ng>

ng>自檢隻需0.5秒，開機瞬間完成。ng>

ng>測量范圍ng>

ng>0.01~1000Ω。ng>

ng>0.01~1200Ω，量程更寬。ng>

ng>存儲數據ng>

ng>30組。ng>

ng>99組。ng>

ng>蜂鳴報警ng>

ng>無ng>

ng>有。ng>

ng>乾擾識別ng>

ng>無ng>

ng>有蜂鳴及NOISE符號閃爍。ng>

ng>232接口ng>

ng>無ng>

ng>可連接RS232接口。ng>

ng>功    耗ng>

ng>最大100mA。ng>

ng>最大50mA，電池使用時間更長。ng>

ng>機表外形ng>

ng>機形笨重，外表粗糙，操作費力。ng>

ng>外表細致美觀，結構更牢固，操作舒適。ng>

ng>電池蓋板ng>

ng>無緊固螺釘，容易造成電池脫落，發生事故隱患。ng>

ng>有緊固螺釘，安全可靠，電池更換方便。ng>

ng>功   能ng>

ng>接地電阻測試、回路電阻測試ng>

ng>電   源ng>

ng>6VDC（4節5號堿性乾電池）ng>

ng>電阻量程ng>

ng>0.01-1200Ωng>

ng>電阻分辨率ng>

ng>0.001Ωng>

ng>電阻最高精度ng>

ng>±1%±0.01Ωng>

ng>數據存儲ng>

ng>99組ng>

ng>報警臨界值設定范圍ng>

ng>電阻：1-199Ωng>

ng>聲光報警ng>

ng>“嘟--嘟--嘟--”報警聲，報警符號閃爍ng>

ng>按AL鍵開啟、關閉、設置ng>

ng>乾擾信號識別功能ng>

ng>“嘟--嘟--嘟--”提示音，NOISE符號閃爍顯示ng>

ng>工作溫濕度ng>

ng>-20℃-55℃；20％RH-90％RHng>

ng>液晶顯示器ng>

ng>4位LCD數字顯示，長寬47mm×28.5mmng>

ng>鉗口尺寸ng>

ng>長鉗口65mm×32mm；圓鉗口Φ32mmng>

ng>鉗口張開尺寸ng>

ng>長鉗口28mm;圓鉗口32mmng>

ng>鉗表質量ng>

ng>長鉗口1160g;圓鉗口1120g(含電池)ng>

ng>鉗表尺寸ng>

ng>長鉗口：長寬厚285mm×85mm×56mmng>

ng>圓鉗口：長寬厚260mm×90mm×66mmng>

ng>保護等級ng>

ng>雙重絕緣ng>

ng>結構特點ng>

ng>鉗形CTng>

ng>換檔ng>

ng>全自動換檔ng>

ng>外部磁場ng>

ng>＜40A/mng>

ng>外部電場ng>

ng>＜1V/mng>

ng>單次測量時間ng>

ng>0.5秒ng>

ng>電阻測量頻率ng>

ng>＞1KHzng>

ng>被測電流頻率ng>

ng>50/60Hz自動ng>

ng>電池電壓低指示功能ng>

ng>當電池電壓低於5.3V時，電池電壓低符號顯示ng>

ng>存儲數據已滿指示ng>

ng>存儲數據已滿99組，閃爍顯示“MEM”符號ng>

ng>超量程指示ng>

ng>超量程指示“OLΩ”、“L0.01”或“OL A”ng>

ng>自,,,,動關機ng>

ng>開機約5分半鐘機表將自動關機ng>

ng>功 耗ng>

ng>開機啟動、工作最大電流小於50mA，連續工作約30小時ng>

ng>隨機附件ng>

ng>機表：1件；測試環：1件；機表箱：1件ng>