Đồng hồ đo điện trở cách điện Kyoritsu 3122A Model 3121A 3122A 3123A DC test voltage 2500V 5000V 5000V 10000V Measuring ranges (automatic change) 2GΩ/100GΩ (Auto-ranging) 5GΩ/200GΩ (Auto-ranging) 5GΩ/200GΩ (Auto-ranging) 10GΩ/400GΩ (Auto-ranging) First effective measuring ranges 0.1 ~ 50GΩ 0.2 ~ 100GΩ 0.2 ~ 100GΩ 0.4 ~ 200GΩ Accuracy | ± 5% rdg Other ranges accuracy | ±10% rdg or 0.5% of scale length Withstand voltage 5000V AC for 1 minute Power source R6 (AA) (1.5V) × 8 Dimensions 200 (L) × 140 (W) × 80 (D) mm Weight approx. 1kg Accessories 7165A (Line probe) (3m) 7224A (Earth cord) (1.5m) 7225A (Guard code) (1.5m) 9158 (Hard case) R6 (AA) × 8 Instruction manual Calibration Certificate 7165A (Line probe) (3m) 7224A (Earth cord) (1.5m) 7225A (Guard code) (1.5m) 8019 (Hook type prod) 9158 (Hard case) R6 (AA) × 8 Instruction manual Calibration Certificate Optional 7168A (Line probe with aligator clip) 8019 (Hook type prod) 8324 (Adaptor for recorder) 7253 (Longer Line probe with alligator clip) (15m) 7168A (Line probe with aligator clip) 8324 (Adaptor for recorder) 7253 (Longer Line probe with alligator clip) (15m)