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    1. 台湾标准电机SEW仪器仪表--4105 ER Earth Resistance Testers 3 Wire Analog
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        4105 ER   Earth Resistance Testers
        3 Wire (Analog)  
        4105 ER
         Capable of measuring earth voltage.
         2mA measuring current permits earth resistance tests with tripping earth leakage current breakers in the circuit under test.
         Test leads are supplied as standard accessories for simplified two-wire measuring system.
         Battery life indicator.
         Battery operated.
         Lamp for the scale's panel. (atuo shut-off in 10 seconds)
         CAT III 300V.
        Measuring Ranges Earth Resistance : 0-12 Ohm/0-120 Ohm/0-1200 Ohm
        Earth Voltage : 0-30V AC (40-500Hz)
        Accuracy Earth Resistance : +/- (2.5% + 1mm)
        Earth Voltage : +/- (2.5% + 1mm)
        Measuring System Earth resistance by constant current inverter 820 Hz approx. 2mA
        Open Circuit Indication LED unit
        Power Source 1.5 V SUM-3 (AA) x 8 batteries or equivalent
        Dimensions 250(L) x 190(W) x 110(D) mm
        Weight Approx. 1500g (battery included)
        Accessories Test leads (AL-36 : red-15m, yellow-10m, green-5m)
        Simplified measurement probe
        Auxiliary earth spikes
        Shoulder belt
        Instruction manual
        特 點
        ● 吊線式高品質防震表頭。
        ● 可量測接地電阻(Ω)和接地電壓(ACV)。
        ● 量測電流僅有2mA,不會影響漏電斷路器的跳脫。
        ● 可作三線式量測或兩線式量測。
        ● 電池電量指示。
        ● 使用電池操作。
        ● 使用提供的測試線測試。
        ● :
        CAT III 30V
        規 格 (23°C±5°C <80%R.H.)
        量測檔位 接地電阻 : 0-12Ω / 0-120Ω / 0-1200Ω
        接地電壓 : 0-30V AC(40-500Hz)
        準確度 接地電阻 : ±3%滿刻度
        接地電壓 : ±2.5%滿刻度
        量測系統 820Hz 2mA 定電流
        接線正確(量測接地電阻) 紅燈(LED)會亮著
        外形尺寸 250(長)×190(寬)×110(高)mm
        重量 約1500克(含電池)
        使用電池 1.5V(AA)×8(顆)
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