The GM-30 multi-channel magnetotelluric measurement system developed by Geomative Co., Ltd. , It is a professional equipment used for geophysical exploration. It measures the electric and magnetic field components of natural alternating electromagnetic fields to obtain underground geological structure information. It is widely used in mineral exploration, geological structure research, oil and gas exploration and other fields.
High precision measurement: Using advanced sensor technology, it can accurately measure weak electromagnetic field signals, ensuring the accuracy and reliability of data.
Broadband coverage: The device can cover a wide frequency range from ultra-low frequency to high frequency, meeting the needs of geological structure exploration at different depths.
Portable design: The overall structure is compact, lightweight, easy to carry and operate in the wild, and adaptable to various complex terrain conditions.
Efficient data collection: With the ability to quickly collect data, a large amount of data can be obtained in a short period of time, improving exploration efficiency.
Intelligent data analysis: equipped with professional data processing software, capable of real-time analysis and processing of collected data, generating intuitive geological interpretation results.
1. Each GM-30 can work as an independent system for remote operation.
2. GM-30 synchronizes timing and positioning through GPS, collects data synchronously from all channels, and stores continuous time series.
3. Traditional natural source electromagnetic methods such as MT and AMT, as well as conventional active methods such as CSAMT, TEM, SIP, TDIP, etc.
4. Can be used for long-term electromagnetic and seismic monitoring.
| Specifications | |
| Channel： | Standard configuration includes 6 high-frequency channels, up to a total of 14 low-frequency and high-frequency channels can be configured |
| A/D： | 24 bit and 32-bit |
| D/A signal generator： | 32-bit DAC |
| sampling frequency ： | 32-bit: 1,5,10,25,50,62.5,80100125200250500,1K, 2K, 4KHz 24 bit: 1,5,10,37.5,50,62.5,80100200250500,1K, 2K, 4K, 6K, 12K, 24K, 48K, 96KHz (optional, up to 256KHz). |
| Analog Gain： | L channel: 1/9,1,4,16,64 H channel: 1/2,1,5,25 |
| Input impedance ： | 10MΩ |
| signal bandwidth： | 32-bit channel: DC-1.65KHz 24 bit channel: DC-48KHz |
| system noise： | When the gain of the L channel is 16, it is about 5nV/√ Hz, and when the gain of the H channel is 25, it is 6nV/√ Hz |
| input range： | -10V -+10V differential input, with high voltage protection function |
| Collection timing： | GPS synchronization, equipped with ultra-low power consumption and high stability oscillator |
| GPS positioning accuracy： | Standard accuracy of 2.5 meters |
| Data Storage： | Stored on the SD card of the device. |
| communication interface： | USB can be used to update firmware |
| Sensor connection： | Various sensors, such as electrodes, coil magnetometers, flux gates, seismic detectors, etc., can be connected through corresponding adapter cables |
| Grounding resistance test： | Equipped with equipment self checking and grounding resistance testing functions |
| Onboard positioning/motion sensor： | Onboard 3-axis digital magnetometer and 3-axis accelerometer, used to measure the direction, tilt angle, and vibration of equipment |
| External sensor power supply： | Provide ± 12VDC power supply, 0&12V logic control, capable of switching and polarity control of the transmitter, and programmable sequence synchronized with GPS |
| Collection software： | Equipment comes with collection software |
| Power consumption and supply： | During the collection period, the power consumption is about 3W Built in 12V lithium battery, supports external 8V~25V DC |
| operation temperature： | -20℃~﹢60℃ |
| package： | Adopting a compact, lightweight, and sturdy casing |
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