Description ETCR Clamp Earth Resistance Tester is widely applied in ground resistance measurement, loop resistance measurement in fields such as electric power, telecommunications, meteorology, oil field, architecture and industrial electrical equipment, etc. When measuring ground system with loop, there is no need to disconnect the ground wire without auxiliary electrode, which means safer and faster. ETCR Clamp Earth Resistance Tester can measure the ground fault which can not be measured by traditional method, can apply in the occasion where traditional methods are unworkabl. Technical Specifications Function：Ground resistance test, Loop resistance test * Power Supply：6VDC 4 PCS of LR6 lkaline batteries * Resistance Range:0.01-200Ω * Resistance Resolution:0.001Ω * Highest Resistance Accuracy:±1%±0.01Ω * Data memory:99 Sets * Alarm Threshold Setting Range:Resistance: 1-199Ω * Alarm Sound and Light：“Beep-beep-beep” alarm tone, Alarm Symbol Flashing, Press AL key to turn on, turn off Alarm or set Alarm Threshold. Interference Signal Recognition：“Beep-beep-beep” tone, NOISE symbol blinking * Working Temperature and Humidity：-20℃-55℃;20%RH-90%RH * LCD Screen：4 Digits LCD display, Screen L×W: 47mm×28.5mm * Clamp Size：Φ32mm * Clamp Opening Extent：32mm * Tester Weight：1120g * Clamp Dimension：L×W×T: 260mm×90mm×66mm * Protection Level：Dual Insulation * Structural Feature：Clamp CT * Shifting：Automatic shifting * External magnetic field： 1KHz * Low Battery Indication：Low battery symbol displays when battery is lower then 5.3V *Standard Accessories: Meter: 1 piece, Test Ring: 1 Piece, Meter Suitcase: 1 Piece *Optional Accessories: RS232 Interface (Optional)