Geophysical Electromagnetic Survey Equipment CSEM/ CSAMT Controlled-source audio-frequency magnetotellurics (CSAMT) groundwater Geothermal exploration
Controlled-source Audio-frequency Magnetotellurics (CSAMT) is a type of CSEM surveying in which the transmitter is placed in the far field from the receiver. Early in the development of the method this was done to simplify modeling the data using mathematics and software originally written for modeling natural-source (rather than controlled-source) MT data.
Instrument introduction
GD-4 electromagnetic survey equipment is based on the mature magnetotelluric sounding theory, using random signal processing technology, a wide-band magnetotellurometer that integrates high-frequency magnetotelluric (HMT), audio magnetotelluric (AMT), and magnetotelluric (MT or LMT).
Application areas
Geophysical Electromagnetic Survey Equipment CSEM/ CSAMT Controlled-source audio-frequency magnetotellurics (CSAMT) groundwater Geothermal exploration
1.Exploration of metal and non-metallic mineral resources;
2.Urban, highway, railway and power engineering geological exploration (karst, fault fracture zone, landslide body, etc.);
3.soil, garbage station environmental monitoring, etc.;
4. Hydrogeological exploration such as groundwater and reservoir dam foundation.
Features and functions
Geophysical Electromagnetic Survey Equipment CSEM/ CSAMT Controlled-source audio-frequency magnetotellurics (CSAMT) groundwater Geothermal exploration
1.Mixed mode of natural source and artificial source ─ ─ Applying the principle of magnetotelluric sounding, it can carry out the magnetotelluric sounding of natural sources, or the magnetotelluric sounding of artificial sources, or a mixture of the two.
2. Broadband Magnetotelluric Instrument-magnetotelluric sounding (100kHz-10Hz), or audio magnetotelluric sounding (10kHz-0.1) Hz) or long-period magnetotelluric sounding (1kHz-1000s)
3.Efficient multi-sampling rate real-time parallel acquisition--The simultaneous sampling of five high and low speed sampling rates of 192kHz, 24kHz, 2400Hz, 150Hz and 15Hz
4. Lightweight live real-time imaging
Technical Specification:
Geophysical Electromagnetic Survey Equipment CSEM/ CSAMT Controlled-source audio-frequency magnetotellurics (CSAMT) groundwater Geothermal exploration
| Items |
Electromagnetic Survey Equipment |
| Detection methods: |
artificial source, natural source, artificial
and natural mixed field source; |
| Number of channels: |
4 channels (2 channels, 2 channels); |
| AD converter: |
32-bit high precision high speed ADC
(maximum sampling rate 192ksps); |
| Dynamic range: |
system 160dB, instant 130dB@24kHz, 0dB; |
| Bandwidth: |
DC to 92kHz; |
| Input range |
10 V PP @ 0dB |
| Noise level |
<5nV/√Hz@24kHz, 36 dB |
| Input impedance: |
electrical channel >10MOhm, magnetic channel >20kOhm |
| Gain control: |
programmed 0dB, 12dB, 24 dB, 36dB |
| Synchronization accuracy: |
±100ns |
| Power consumption: |
<10W@12VDC |
| Size: |
26 x 17.3x 10.6 cm |
| Weight: |
4.0kg |
| Waterproof rating: |
IP67 |
| Self-test content: |
instrument gain, dynamic range detection, acquisition
box, magnetic sensor sensitivity calibration |
| Operating system: |
Operating system: Embedded Linux |
| Display: |
6.5 inch industrial grade LCD |
| LCD brightness: |
1200cd/m2, daylight visible |
| Storage capacity: |
32G |
| Data transmission: |
USB2.0 high speed transmission |
| Battery capacity: |
12.6V 13.4Ah, can work continuously for 16 hours |
| Power connector: |
External 12V battery or adapter works |
Geophysical Electromagnetic Survey Equipment CSEM/ CSAMT Controlled-source audio-frequency magnetotellurics (CSAMT) groundwater Geothermal exploration
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