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Underground Time Domain Electromagnetic Survey Equipment TDEM

Underground Time Domain Electromagnetic Survey Equipment TDEM

Brand Name:Gold
Model Number:WTEM
Minimum Order Quantity:1 set
Delivery Time:5-8 working days
Payment Terms:L/C, D/A, D/P, T/T, Western Union, MoneyGram
Place of Origin:Chongqing, China
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Product Details

1000m Underground Water Detection Time-Domain Electromagnetic Survey System


Principle


The transient electromagnetic method, called TDEM (Time-Domain Electromagnetic Method) belongs to the group of active electromagnetic methods.


The transient electromagnetic method, called TDEM (Time-Domain Electromagnetic Method) belongs to the group of active electromagnetic methods,transient electromagnetics (TEM) method was developed in order to gain information on the subsurface resistance-conductivity. It is applied successfully in mineral and geothermal exploration, in hydrogeology, environmental surveys and the like.


The measurement depth ranges between a few and more than 1000m. Measuring depth depend on the size of the used transmitter’s power transmission loop; and the strength of the interference caused by the environment


Techenical Specification


Transmitting voltage≤200V3
Transmitting current≤50A
Current measurement precisioncurrent range before power supply being cut off is 0~50A, display resolution is 0.01A.
Power supply frequencies0.0625Hz, 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 time1μs~1000μs
Turn-off time≤1.2μs (pure resistance), changing with the transmitting current and transmitting coil when connecting to the coils
Damping resistance1000Ω
Transmitting coil0.1km×0.1km single turn ~ 2km×2km single turn
Synchronization modeexternal synchronization (cable, GPS)
Power supplyinternal 12V8.6Ah rechargeable battery (or external 12V power supply) lasting for over 10 hours
Dimension525×436×217mm3
Weight18.5kg
Working temperature-10°C~+50°C
Receiver
Number of channel1
Pre-amplification gain8, 32 times
Main amplification gain1, 2, 4, 8, 32, 64, 128 times
Band-pass0~50k Hz (liner phased filter), full band-pass 0~400k Hz
Suppression80dB
A/D16 bit
Min sample interval1μs
Trace number≤128
Stacking times1~9999 time
Synchronization modeinternal 12V9.6Ah rechargeable battery (or external 12V power supply) lasting for over 10 hours
Pocket PCWindows 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
PortsBluetooth, infrared and serial port
Dimension340×295×152mm
Weight5.3kg
Working temperature-10°C~+50°C

Configuration for whole Time-Domain Electromagnetic Survey System


1.WTEM-2J Receiver 1 set

2.WTEM-2D/60 Transmitter 1 set

3.WTEM-2T/GPS Transmitter Synchronized Controller 1 set

4.Touch pad to control the TEM system 1 set

5.PTT-40A Antenna and Adapter 1 set Optional


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China Underground Time Domain Electromagnetic Survey Equipment TDEM supplier

Underground Time Domain Electromagnetic Survey Equipment TDEM

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