Ultra High Density Electrical Measuring Instrument
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As part of DC electrical method, high density electrical method can observe apparent resistivity and polarizability and then form 2D/3D sections of apparent resistivity and polarizability. The high density electrical measuring instrument can collect high-density data and perform efficient and accurate measurement. It can directly and accurately demonstrate the abnormal electrical property distribution of underground objects.
Specification 1. Full wave DC electrical method instrument| Receiver | |
| Measuring voltage range | ±40V (32bit A/D) |
| Measuring voltage resolution | 5nV |
| Voltage measure accuracy | When U＞3mV, accuracy≤0.1%; when U≤3mV, accuracy=±1uV |
| Apparent polarizability accuracy | Relative error≤±0.2% |
| Measuring current range | 0 -6000 mA (32bit A/D) |
| Measuring current resolution | 10nA |
| Current measure accuracy | When Ip≥10mA，±0.1% |
| Input impedance | ≥50MΩ |
| Input protection voltage | 1000V |
| Interference Suppression on 50Hz Power Frequency | ＞120dB |
| SP compensation range | ±40V(real-time automatic digital compensation at the whole range) |
| Transmitter | |
| Maximum power supply voltage | 1400V |
| Maximum power supply current | 6A |
| Maximum power | 7500W |
| Power supply time | 1-64s |
| Power suspension time | 1-64s |
| Protection | Overvoltage & overcurrent |
| Others | |
| Processor | ARM Cortex-A8 |
| Operation system | Embedded Linux real-time system |
| Screen | 6.4-inch 24bit true-color LCD |
| LCD brightness | 1200cd/m2, visible in daylight |
| Storage capacity | 16G-128G optional |
| Data Transmission | USB 2.0 |
| Battery capacity | 16.8V 12.5Ah, continuously working for 16h |
| Power interface | External battery or adapter |
| Waterproof level | IP66 |
| working temperature | -10-+50℃ |
| Volume | 300 x 225 x 132 mm |
| Weight | 5.6Kg |
| Number of electrode boxes | 10 electrodes/cable(5-256 electrodes/cable optional) |
| Distance between electrode boxes | 5m and 10m (1-20m optional) |
| Power supply | 1000V/4A |
| Power supply impedance | 50Ω/km |
| Diameter | 6mm |
| Weight | 4kg (10 electrodes/cable,10m/electrode) |
| Tensile strength | 2000kN |
| Insulation | ≥1000MΩ/1000V (between AB power supply line and low voltage lines) |
| Waterproof level | IP67 (waterproof, dustproof, rainproof) |
| Electrode box volume | Φ17mm*62mm(electrode)， Φ 24mm*158mm (maximum volume) |
| Electrode box compression strength | 50Kg/cm² |
| Switch lifespan | 100,000 times |
| Electrode box power consumption | 18mW |
| Coding | Automatically coding |
| Cascade connection | Random cables |
| Receive and transmit electrode | Automatically separation/closure (resistivity and polarizability can be chosen automatically) |
| Working temperature | -20℃～+60℃ |
| Convertor | 60 electrodes/convertor |
| Power supply | 800V/4A |
| Coding | Automatically coding |
| Cascade connection | Random cascade connection through multiple electrode convertor |
| Working temperature | -20℃～+60℃ |
| Volume | 27×24.6×12.4cm |
| Weight | 2.6kg |
| Centralized high density cable | |
| Number of electrodes | 30 electrodes/ cable |
| Distance between electrodes | 5m/10m (customization available) |
| Insulation | ≥500MΩ/1000V (between AB power supply line and low voltage lines) |
| Waterproof level | IP67 (waterproof, dustproof, rainproof) |
| Material | Polyurethane sheath |
| Outer diameter | 7mm |
| Convertor | 10 electrodes/ convertor |
| power supply | 800V/4A |
| Coding | Automatically coding |
| Cascade connection | Random cascade connection through multiple electrode convertor |
| Working temperature | -20℃～+60℃ |
| Volume | Φ46mm*218mm |
| Weight | 0.4kg |
| Cascaded high density cable | |
| Number of electrodes | 10 electrodes/ cable |
| Distance between electrodes | 5m/10m (customization available) |
| Insulation | ≥500MΩ/1000V (between AB power supply line and low voltage lines) |
| Waterproof level | IP67 (waterproof, dustproof, rainproof) |
| Material | Polyurethane sheath |
| Outer diameter | 7mm |
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