Underground Deep Geophyscial Exploration Instrument Transient Electromagnetic Equipment
Underground Deep Geophyscial Exploration Instrument Transient Electromagnetic Equipment(TEM))
1.A fully time-domain transient electromagnetic system, designed to give high quality, high spatial resolution transient electromagnetic data from near-surface to deep ground
2.A range of transmitter frequencies and sampling options
3.Full time-series data storage, processing and visualisation abilities
FAQ about Underground Deep Geophyscial Exploration Instrument Transient Electromagnetic Equipment(TEM))
1. What's is Transient Electromagnetic Equipment(TEM)?
TEM is an inductive geophysical method that uses time-varying magnetic fields to map the electrical conductivity of the subsurface. It does not require direct galvanic (electrical) contact with the ground, and instead uses a transmitter loop on the ground to induce a transient current within the subsurface. The receiver antenna(s) then measure the rate of change of the magnetic field associated with that current as it propagates through the earth.
2.What's precautions for Transient Electromagnetic Equipment(TEM)?
A.Arrange transmitting coil and receiving coil in accordance with the requirements of measurements. The extra wires should be released from the wire rack in a straight line or S shape.
B.If the displayed waveform is red, meaning the test date is negative, just switch the direction of receiving coil.
C.If the test waveform is disordered, the possible interference sources could be: grid system, atmospheric disturbance, electromagnetic equipment or unmatched damping resistance.
D.If the instrument works at a new work area (which is far away for the last one), the first synchronization will take longer time, sometimes around 30 minutes.
E.Do not place any large metal hyper-polarized object inside transmitting and receiving coil.
Detailed Configruation for Transient Electromagnetic Equipment(TEM) System
| Serial Number | Name | Quantity |
| 1 | WTEM-2Q mainframe | 1 unit |
| 2 | Mainframe backpack | 1 |
| 3 | Windows tablet PC (including charger) | 1 |
| 4 | USB Type C connector | 1 |
| 5 | External battery wire for receiver | 1 |
| 6 | Special damping cable for receiving coil (10 meters, 20 meters) | 2 (1 for each) |
| 7 | Damping resistance (50,60,110,200Ω) | 8pieces(2 for each type) |
| 8 | GPSantenna | 1 |
| 9 | Low-power transmitter power input line | 1 |
| 10 | Low-power transmitter battery serial connecting wire | 1 |
| 11 | Connecting line between transmitter coil and transmitter | 1 |
| 12 | 20×20meters(80 meters in total) transmitting coil | 1 |
| 13 | 5×5meters (20 meters in total) receiving coil | 1 |
| 14 | Charger | 1 |
| 15 | Digital inductance and capacitance meter | 1 |
| 16 | USB Flash Disk for Program and Instruction | 1 |
| 17 | Operating manual | 1 |
| 18 | 10Afuse | 10 |
| 19 | Reference materials | 1 |
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