Ground Resistance Tester Digital Display Earth Meter with GPRS Communication ETCR2800C Item Type: Ground Resistance Tester Model: ETCR2800C Material: PVC Application: Suitable for transmission line tower grounding, meteorological thunder protection grounding, petrochemical grounding, communication grounding, substation grounding, railway facilities grounding, building warehouse grounding, metal loop resistance, electrical equipment grounding, etc. Function: Loop grounding resistance online monitoring, metal loop connection resistance online monitoring, grounding condition monitoring. CT Structure: Closed Loop Resistance Range: 0.01Ω-200Ω Resolution: 0.001Ω Accuracy: ±2%rdg±3dgt (20℃±5℃, below 70%RH) Overflow Indication: When the test value is greater than 200Ω, the LCD displays OLΩ. Alarm Indication: Detector with sound and light alarm and LCD display. Alarm Settings: Background Settings Working Temperature and Humidity: -20℃-55℃, 20%RH-90%RH. Temperature and Humidity Error: No more than 5%. Shifting: Automatic Shifting External Magnetic Field: <40A/m External Electric Field: <1V/m Single Measurement Time: About 0.5 seconds. Power Consumption: 12VDC 150mA, maximum.