GD-C Portable Ungerground Water Detector Application: u Metal and non-metal ore survey u Decrease mineral invest venture and increase exploration success rate u Underground water detect u Meet demand of drinking water, industrial usage and agricultural irrigation. u Engineering geological prospect and disaster geological detect u Coal goaf, archaeological mining, city exploration and non-metal pipe survey Main features: u Fast and high efficiency u Easy to carry u Easy operation u Good precision and high accuracy u Very practical and low cost u Flexible array—traditional and unique array method Technical parameters: 1. It can store 20 curves’ measuring data of "Two-pole profile", "Two-pole sounding" and “Annual profile” measurement. 2. Data and abnormal curves can be introduced by a 4G U-disk storage to computer with the USB port, which is very convenient for data analysis. 3. Power supply: by 4 dry batteries or 4 rechargeable batteries. 4. Measuring range: 0.001mV~2550mV (auto range transfer) 5. Resolution: 0.001mV 6. Measuring accuracy: ±2% ±3 LSB 7. Input impendence: ≥10MΩ 8. Working temperature: -10°C~+50°C 9. Working humidity: 95% 10. Whole weight.1.5kg, size: 24cm*13cm*16cm.