DUOYI Digital Ground Resistance Meter Tester 1. Ground resistance Re (Rg when testing soil resistivity p) 2. Range: 2 ohms20 ohms200 ohms2000 ohms (test range: 0.03~2.000 ohms0.03~20.00 ohms0.03~200.0 ohms0.03~2000 ohms) 3. Soil resistivity: 2 ohms20 ohms200 ohms2000 ohms (test range: 0.2~376.8 ohms.m0.2~3768 ohms.m0.2~37.68k ohms.m0.2~376.8k ohms.m) 4. Soil resistivity test: 4-pole method (only applicable to DY4100B) 5. Soil resistivity refers to the resistance of soil to current per unit length and unit cross-sectional area, and is a measure of the soil''s resistance to current intensity 6. Voltage to ground (AC voltage): 600V Test range 0~600Vac 7. Photovoltaic voltage (DC voltage): 1500V Test range: 0~1500Vac 8. Test method: voltage drop method (applicable to the current and voltage test of the probe) 9. Display: segment LCD display, display backlight 10. Battery voltage warning: battery logo display 11. Continuous test times: In the 2 ohm range, test once every 30 seconds with a 1 ohm load, and can be repeated more than 400 times 12. Input exceeds display: Display "OL" 13. Automatic shutdown function: If there is no operation for 5 minutes after the key operation, the system will enter the automatic shutdown state 14. Overload protection: AC280V10 seconds between E-S ports 15. Withstand voltage: AC3540V (5060Hz)5 seconds between electrical circuit and outer box 16. Insulation resistance: 50 milliohms or moreDC 1000V between electrical circuit and outer box 17. Power supply: 6 AA batteries (not included) 18. When testing ground resistance and soil resistivity, the series interference voltage will be automatically tested synchronously, and a prompt will be given if there is an abnormal test result 19. High-definition display, clear reading, easy measurement 20. Multiple gear selection, adjustable according to different needs 21. Suitable for measurement in power, post and telecommunications, railways, petroleum,