Clamp-on Ground Resistance Tester, 0 to 200kΩ

Buy a high-precision clamp ground resistance tester online. It is provided with a 0.000mA~20A current range, 0~200kΩ measurement range, 5-inch color LCD screen, USB interface charging port, storage function and clock function. Digital earth resistance tester is suitable for measuring grounding resistance, loop resistance, soil resistivity, voltage to ground, and grounding down conductor leakage current.

Features

• ATO earth resistance tester is available with a 32mm clamp and 0Ω~200kΩ measure range.
• Clamp on earth resistance tester is designed for on-site measurement of ground resistance, soil resistivity, ground current, and ground voltage. It has a 2.5-inch color LCD screen. and USB interface charging port,
• storage function, and clock function, and automatically stores 500 groups.
• Digital ground resistance testers can measure grounding resistance by various measurement methods such as the clamp meter method, two-wire method, three-wire method, four-wire method, and selection method.

Specifications

Range and Accuracy

Note

• The additional error when rC max or rP max is ≤±5%rdg±5dgt.
• rC max: 4kΩ+100R＜50kΩ, rP max: 4kΩ+100R＜50kΩ
• The additional error at 2.5V interference voltage is ≤±5%rdg±5dgt.

Details

Applications

ATO provides earth resistance testers with a measurement range of 0.00Ω-300kΩ, which are widely used in ground resistance measurement and loop resistance measurement in fields such as electric power, telecommunications, meteorology, oil fields, construction, and industrial electrical equipment. When measuring the grounding system with a loop, the ground resistance tester does not need auxiliary electrodes and does not need to disconnect the grounding wire, which is safer and faster.

Tips: What are the factors that affect soil resistivity?

• Soil resistivity is the average value of soil resistance per unit length, measured in ohm meters. The main factors affecting soil resistivity are as follows:
• Different soil types have different soil resistivities.
  When the temperature drops again, ρ increases significantly. As the temperature starts to rise from 0°C, ρ will only decrease steadily.
• The size of the soil resistivity ρ mainly depends on the concentration of conductive ions in the soil and the water content in the soil. The higher the concentration of conductive ions in the soil, the better the conductivity of the soil and the smaller ρ.
• The density of the soil affects the soil resistivity.
• Seasonal changes will cause changes in soil resistivity, and the most obvious factors affecting soil resistivity are rainfall and freezing.