Chongqing Gold Mechanical & Electrical Equipment Co.,Ltd
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Magnetic Survey Instruments Transient Electromagnetic Equipment
Magnetic survey instruments are used in a variety of applications, including mineral exploration, geologic mapping, and archeological studies. They are also used in military and aerospace applications, such as detecting submarines and mapping the Earth's magnetic field from space.
Types of Magnetic Survey Instrument
Proton precession magnetometer - This instrument measures the Earth's magnetic field by detecting the precession of protons in a magnetic field. It is sensitive to variations in the magnetic field caused by magnetic anomalies in the Earth's crust.
Fluxgate magnetometer - This instrument measures the strength and direction of magnetic fields. It uses two small coils of wire that are wound around a magnetic core. When a magnetic field is present, it causes a change in the electrical resistance of the wire, which can be measured and used to calculate the strength and direction of the magnetic field.
Overhauser magnetometer - This instrument uses a process called nuclear magnetic resonance to measure the Earth's magnetic field. It is similar to the proton precession magnetometer, but it uses a different type of atomic nucleus to detect the magnetic field.
Gradiometer - This instrument measures the spatial gradient of the magnetic field, which allows it to detect small changes in the magnetic field caused by nearby magnetic anomalies.
Techenical Specification
| Transmitting voltage | ≤200V3 |
| Transmitting current | ≤50A |
| Current measurement precision | current range before power supply being cut off is 0~50A, display resolution is 0.01A. |
| Power supply frequencies | 0.0625Hz, 0.125Hz, 0.25Hz, 0.5Hz, 1Hz, 2Hz, 4Hz, 8Hz, 16Hz, 32Hz |
| Transmitting waveform | +ON, OFF, -ON, OFF, equal width and dual polarity |
| Turn-off delay time | 1μs~1000μs |
| Turn-off time | ≤1.2μs (pure resistance), changing with the transmitting current and transmitting coil when connecting to the coils |
| Damping resistance | 1000Ω |
| Transmitting coil | 0.1km×0.1km single turn ~ 2km×2km single turn |
| Synchronization mode | external synchronization (cable, GPS) |
| Power supply | internal 12V8.6Ah rechargeable battery (or external 12V power supply) lasting for over 10 hours |
| Dimension | 525×436×217mm3 |
| Weight | 18.5kg |
| Working temperature | -10°C~+50°C |
| | Receiver |
| Number of channel | 1 |
| Pre-amplification gain | 8, 32 times |
| Main amplification gain | 1, 2, 4, 8, 32, 64, 128 times |
| Band-pass | 0~50k Hz (liner phased filter), full band-pass 0~400k Hz |
| Suppression | 80dB |
| A/D | 16 bit |
| Min sample interval | 1μs |
| Trace number | ≤128 |
| Stacking times | 1~9999 time |
| Synchronization mode | internal 12V9.6Ah rechargeable battery (or external 12V power supply) lasting for over 10 hours |
| Pocket PC | Windows Mobile 6.0 system with software such as Word, Excel, etc., 320x240 true color, 64MB Flash Rom/ 64MB SDRAM/64MB 2GB CF card, able to store over 200,000 readings of sampled data,2 original rechargeable batteries |
| Ports | Bluetooth, infrared and serial port |
| Dimension | 340×295×152mm |
| Weight | 5.3kg |
| Working temperature | -10°C~+50°C |
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