FCTEM60-1towed and high-resolution transient electromagnetic system
Product introduction
The transient electromagnetic method uses the ungrounded loop to send a pulsed magnetic field to the ground, and uses the receiving coil to receive the secondary magnetic field generated by the underground induced eddy current to detect the resistivity of the geological body. FCTEM60-1 towed and high-resolution transient electromagnetic system is the only commercial towed transient electromagnetic system on the market, with fast, efficient, accurate, three-dimensional and other significant characteristics. It adopts the stabilizing voltage clamping high-speed turn-off technique with independent intellectual property rights, cross-loop decoupling lossless decoupling and mutual inductance technology, shielded coil technology, combined with high-density and high-dynamic signal acquisition, with strong shallow and high-resolution detection capabilities; The use of large magnetic moment emission and shielded coil technology enhances the anti-interference ability and greatly improves the deep detection effect; Multiple coil configurations provide flexible options for surface, water, underwater and tunnel detection from shallow to deep; The Alpha supercomputing inversion cloud platform has qualitatively improved the speed and effect of inversion.
It is suitable for urban underground space investigation, road disease detection, tunnel advanced geological forecasting, karst and groundwater detection, dam leakage detection, goaf area, fault, superficial stratum layer detection, pipeline detection, pipeline corrosion detection, unknown buried object investigation, archaeology, etc.
· No blind area in shallow layers: stabilizing voltage clamping high-speed turn-off technique (Reduce detection blind area), Non-destructive and mutual-inductance technology (improves shallow resolution);
· High resolution: vertical resolution and lateral resolution are extremely high;
· Strong anti-interference: through high current pressure noise, the use of shielded coil is suitable for strong interference areas such as cities and high-voltage lines;
· Stable coil structure: no on-site adjustment, good seismic resistance;
· A wide variety of coil types: Wide range of coil types: For ground, underwater and tunnel scenarios, ordinary coils, shielded coils, and waterproof coils are designed respectively, and there are 0.2m, 0.5m, 0.7m, 0.9m, 1.1m and other caliber coils according to the detection depth and resolution requirements for customers to choose and use.
· Achieve towed high-density and efficient detection and RTK real-time location system.
· Data processing: Adopted the Alpha supercomputing inversion cloud platform, which has the characteristics of semi-automatic geological model generation, streamlined and easy adjustment of parameters, clear stratification of production status, easy to judge abnormal focus, extremely fast inversion speed, and convenient upgrade and maintenance.
· It has a joint inversion data interface with the TETSP tunnel seismic advance prediction system;
· The system structure design is simple, light and easy to operate.
· A/D: 24 bits;
· Real-time dynamic range: 150dB;
· Data acquisition mode: spot and towed measurement mode;
· Sample rate: 1.25 or 2.5MHz;
· Sampling interval: 800 or 400ns;
· Host: transmitter and received integrated host;
· Transmission voltage: DC12-33V;
· Acquisition terminal communication mode: USB3.0;
· High-precision positioning: differential positioning and accuracy is 2cm;
· Power supply mode: lithium battery power supply, 12V, 24V, 33V three options;
· Transmit current: 60A;
· Detection depth: 200 meters;
· Transmission frequency: 50, 25, 12.5, 6.25, 3.125, 0.78125, 0.390625Hz (optional);
· Turn-off time: less than 60μs (coil 0.5m diameter), less than 85μs (coil 0.9m diameter);
· Standard coil: 0.9m coil;
· Working temperature: -30°C60°C, maximum relative humidity of 95%;
· Host and coil: single cable connection;
· Data processing: Alpha quasi-two-dimensional supercomputing fast inversion system;
Coil optional types: Conventional coil (ground)
CL500：Diameter: 0.5m, Emission magnetic moment: 300Am2@60A;
CL900：Diameter: 0.9m, Emission magnetic moment: 1000Am2@60A;
CL1100：Diameter: 1.1m, Emission magnetic moment: 1500Am2@60A;
Directional coils (tunnels, mines, strong interference zones)
CLD900：Diameter: 0.9m, Emission magnetic moment: 1000Am2@60A;
Waterproof coil (underwater, tunnel)
CLW1100：Diameter: 1.1m, Emission magnetic moment: 1500Am2@60A;
On-board transient electromagnetic drag measurement
