| Customization: | Available |
|---|---|
| After-sales Service: | Provide |
| Warranty: | 1 Year |
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Introduction
In geological exploration, understanding subsurface structures and materials is crucial for resource identification, environmental monitoring, and geotechnical investigations. Among the various geophysical techniques used for this purpose, Transient Electromagnetic (TEM) equipment has emerged as a powerful tool. TEM involves the use of electromagnetic fields to probe the subsurface, offering distinct advantages in terms of speed, accuracy, and non-invasiveness. This article explores the uses, advantages, and practical applications of TEM in geological exploration.
What is Transient Electromagnetic (TEM) Equipment?
Transient Electromagnetic (TEM) is a geophysical method that involves the measurement of the time decay of induced electromagnetic fields in the Earth's subsurface. TEM surveys typically consist of a transmitter that sends a pulse of electromagnetic energy into the ground and a receiver that measures the time it takes for the induced currents to dissipate. The data collected is then analyzed to infer subsurface electrical properties, such as resistivity, which can be used to map geological features.
Uses of Subsurface Mapping TEM Transient Electromagnetic Equipment Geological Groundwater Mineral Exploration Equipment
Oil and Gas Exploration: In some cases, TEM is used to detect hydrocarbons and oil reservoirs. Variations in resistivity can be indicative of the presence of oil and gas, although this application is less common than its use in mineral exploration.
Specifications of Subsurface Mapping TEM Transient Electromagnetic Equipment Geological Groundwater Mineral Exploration Equipment
| Transmitter | |
| Transmitting voltage | ≤200V |
| 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 | 525×436×217mm 3 |
| 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 |
| 01 | WTEM-2J TEM Receiver |
| 02 | WTEM-2D 15KW TEM Transmitter |
| 03 | Win10 Tablet PC to control the TEM system receiver and the system |
PTT-40A Antenna & Adapter
WTEM-2T/GPS Synchronized Controller
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