High Power DC Electrical Measuring System, Type DJF20-1
DFF20-1 high power DC electrical measuring system consists of a rectification power supply (10 kw or 20kw), a 20kw generator, one or multiple (3~5) receivers, stimulators, dummy loads, AB electrodes, AB power lines, reels, measure electrodes and other accessories. DFF20-1 high power DC electrical measuring systems are widely used for metal and nonmetal mineral resource survey, high-precision mineral resource survey and the exploration of underground water resources.
Feature- There are three synchronization mechanisms to ensure accuracy, including GPS, pulse delay and high accuracy quartz clock.
- The transmitter and rectification power supply are separated, so that the system is more portable and convenient for field work.
- The system is controlled by microcomputer and equipped with a large LCD screen and a touch panel, providing convenience to operators.
- Real-time storage of power supply current and sampling at every minute provide convenience for accurate calculation of apparent resistivity.
- There is overvoltage, overcurrent and overheat protection.
- The special small transformer is efficient and light-weighted.
| Maximum measuring voltage | ±2.5V |
| Voltage resolution | 0.01mV |
| Measurement accuracy | ±1% (when＞10mV) ±0.2mV (when 3mV~10mV) |
| SP compensation range | ±1000mV |
| Synchronization modes | GPS, high accuracy quartz clock, software |
| Adapt power-on line | 1~60s optional |
| Superposition Times | 1~10 optional |
| Instrument Delay Time | 100ms ~1000ms optional |
| Interference Suppression on 50Hz Power Frequency | Better than 60dB |
| Instrument Input Impedance | ＞5 MΩ |
| Power | 7.2V8.8Ah chargeable lithium battery (continuously powering for 50 hours) |
| Volume | 240×95×240mm |
| Weight | 1.5kg |
| Measuring voltage range | ±40V (32bit A/D) |
| Voltage resolution | 5nV |
| Relative measure error | ≤±0.2% |
| Instrument input impedance | ≥50MΩ |
| Input protection voltage | 1000V |
| Screen | 5-inch 24bit true-color LCD |
| Storage capacity | 8G-64G |
| Waterproof level | IP67 |
| Working temptation | -20-+60℃ |
| Volume | 240 mm×95 mm×240mm |
| Weight | 1.5kg |
| Specification | 5A/2000V | 10A/2000V |
| AC voltage | Single-phrase 220V | Three-phrase 380V |
| Power frequency | 50HZ | 50HZ |
| Output voltage | 2000VDC | 2000VDC |
| Output current | 5A | 10A |
| Weight | 50KG | 83KG |
| Volume (mm) | 560*320*500 | 800*400*600 |
| Maximum output power | 10KW | 20KW |
| Output voltage range | 0--2000V |
| Output current | 0.1A-10A |
| Battery | Built-in 12V lithium battery or out-connected 12V battery |
| Weight | 35kg |
| Volume | 560mm×320mm×500mm |
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