Introduction: Clamp Earth Resistance Tester is applied in measurement of grounding resistance and the loop resistance (range: 0.010 ~ 200).When measuring the earth system with loop, there is no need to disconnect the grounding down lead, no need for auxiliary electrode, save and fast , convenient to use. Widely used in electric power, telecommunications, meteorology, oil fields, construction and industrial electrical equipment grounding resistance measurement. Clamp Earth Resistance Tester can measure the ground fault and applied to the occasions that cannot be measured by traditional methods, and it is widely used for the earth resistance measurement of various equipment. Specification: Resistance Range: 0.010~200 Resolution: 0.001 Data Storage:99 sets Alarm symbol indication:Press AL key to turn on / off Alarm threshold setting range:Resistance1~199 Power Supply:6VDC 4 PCS LR6 lkaline batteries not included Working Temperature:-10-5510RH-90RH LCD Size:4 Digits LCD display, Screen: 47mm28.5mm Clamp Size:55mm32mm Clamp Opening Size:32mm Tester Weight:1130g Tester Dimension:275mm85mm56mm Protection Level:Double insulation Structural Feature:Clamp CT Shift:Automatic shift External Magnetic Field/Electrical Field:40A/m;1V/m Single Measurement Time:1 second Resistance Measurement Frequency:1KHz Measured Current Frequency:50/60Hz Automatic Package Included: Main Machine Aluminium case Test ring Four batteries Instruction manual