Transient Electromagnetic Magnetic Survey Instruments
Transient electromagnetic magnetic survey instrument is mainly used
for exploration of metal mines, coal fields, oil and gas fields,
geothermal, hydrologic engineering geology, etc.
Features:
One instrument with multiple functions: this system is integrated with functions of a transmitter and a
receiver, portable and simple in connection. WTEM-3Q has function
of deep exploration with an external high-power TEM transmitterin
cable synchronization or mode GPS synchronization mode.
High reliability, low power consumption: refined receiver and circuitry, reasonable heat dissipating
system design, sealed and rugged mechanical structure, ensuring
high reliability, low power consumption and convenient operation.
Remote control: Tablet PC based Bluetooth wireless communication technology
enables it to control the receiver in 10 meters, such as setting
parameters, starting measuring, transferring and displaying the
measured results.
High anti-interference performance: program controls the filter to give accurate power supply
frequency; besides, data stacking and software filtration also do
good to this performance.
Flexible power supply mode: the power supply waveform with standard duty cycle (1:1) and the
power supply waveform with user-defined power supply pulse width,
optional, so that the instrument has a wider exploration
application. width
Adjustable number of time windows: operator could set number of time windows, linear or logarithmic;
crystal oscillator accomplishes timing, with stable and precise
time–to-depth ratio. Sampling window arrangement is reasonable,
imaging the true subsurface structure. It provides references to
complex geological problems.
Multiple working mode: single-point and continuous working mode,optional.
Wide depth range prospecting: this system is equipped with high-power transmitter which could
easily inspect the objects deep in meters to hundreds of meters
(for shallow exploration)
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 |
Product Image
