Geophysical prospecting instrument for ores and water AMT-3

Geophysical prospecting instrument for ores and water AMT-3

1. The principle of AMT-3 Audio-frequency Magnetotelluric Syetem

AMT-3 Audio-frequency magnetotelluric system is a new generation product based on the magnetotelluric sounding method, MT system, AMT system, frequency sounding method and NEF system, it judges and analyzes the geological abnormity we need to search by measuring relative parameters(such as resistivity) change generated by different structure. And according to the geological theory and qualitative and semi-quantitative interpretation of measurement data, we can estimate underground abnormal geological conditions like location, direction, buried depth, shape and size etc..

2. Main applications of AMT-3 Audio-frequency Magnetotelluric Syetem

1. Widely used in the detailed and general survey of energy minerals (metal ore, non-metal ore, oil and natural gas, coal etc.) to decrease the venture of mineral investment and improve exploration success rate and scientificalness.

2. Applied in the detailed and general survey of underground water to increase the success rate of drilling water.

3. Widely used in the detailed and general survey of hydrologic geology(such as coal goaf, groundwater disasters, dams hidden danger, mountain landslide etc.) to prevent the disaster.

4. Also used in engineering geological prospecting, archaeological, city exploration, non-metal pipe survey as well.

3. Main features of AMT-3 Audio-ferquency Magnetotelluric Syetem

1. Fast and high efficiency:

Complete about 4000m profile measurement in one day to realize geological abnormality in different depth, the prospecting speed and efficiency is improved about 10 times more than traditional resistivity method.

2. Easy to carry:

Without heavy power supply, it uses low frequency signals in earth natural electric field as signal source, and the complete set weight is less than 5kg so easy to carry.

3. Easy operation:

user-friendly interface, high-speed CPU, menu prompts,. You can learn its operation in 2 minutes. It will take 2h for persons without prospecting experience to finish training.

4. Good precision and high accuracy:

with imported core parts, FFT digital filtering technology, high-performance amplifiers and AD converters, the resolution is up to 0.1uV±1%, and the fixed error of frequency is only 0.1%.

5. Wide frequency range:

The frequency respond range is from 0.1Hz to 5KHz, to greatly improve the surveying depth.

6. Strong anti-jamming capability:

It has advanced anti-jamming technology and multiple anti-jamming designs. You can observe abnormity curves result with good repetition even in weak signal area, city, high electric jamming area and working area with other exterior interference via frequency selector and digital processing.

7. Flexible array—traditional and unique array method:

It applies much measurement method: fine and rough measurement, “Two-pole” profile, “Two-pole” sounding, Multi-frequency sounding and annulus profile etc., which has good geological effect and easy explanation. It makes big achievement in solving problems about the direction, depth and thickness of ore vein
8. Remarkable effect:
Through the relative physical parameters variation like different conductivity between ore and non-ore object, it can get the relative information as ore vein direction, buried depth, thickness and deposit etc. In more than 20 years' practice, we gained outstanding achievement and customers' common praise.

4. Main technical parameters of AMT-3 Audio-frequency Magnetotelluric Syetem
1. Automatic noise reduction, super 5 shifts single gain design.

2. 6 frequencies or 40 frequencies measurement synchronously.

3. Data storage: exceed 480000 measurement points, can be transferred to U disk directly.

4. Built-in large capacity chargeable 7.2V 4800mAh lithium batteries to supply power.

5. Electrode test and power monitor function.

6. Measuring voltage range: ±4V

7. Resolution: 0.1uV

8. Frequency range: 0.1Hz-5KHz

9. Measuring voltage accuracy: ±1%±1LSB

10. Measuring currency accuracy: ±1% ±1LSB

11. A/D converter: 16-bit 1Msps

12. Input impendence: ≥100MΩ

13. Noise suppression: Better than 100 dB at f=50Hz industrial frequency

14. Power: 300mA

15. Display: 320x240 LCD screen

16. Data transmission: USB2.0

17. Working temperature: -10°C~+50°C

18. Working humidity: 95%

19,Detect depth:300M