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Underground Time Domain Electromagnetic Survey Equipment TDEM

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Underground Time Domain Electromagnetic Survey Equipment TDEM

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Brand Name : Gold

Model Number : WTEM

Place of Origin : Chongqing, China

MOQ : 1 set

Price : Negotiated

Payment Terms : L/C, D/A, D/P, T/T, Western Union, MoneyGram

Supply Ability : 1 set per 5 days

Delivery Time : 5-8 working days

Packaging Details : Carton

Product Name : Electromagnetic Survey Equipment

Electric current pulse shape width : 10 ms, 20 ms, 40 ms

Current transmitting frequency : 75 Hz,25 Hz,12.5 Hz,6.25 Hz,1.5625 Hz

Maximum transmitting power : 12KW

Synchronous mode : Cable synchronization

Transmitting waveform : Bipolar rectangular wave

Transmitting coil specification : 1 m×1 m~25 m×25 m

Transmitting voltage : 36 V -57 V

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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 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

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

Product Image

Underground Time Domain Electromagnetic Survey Equipment TDEMUnderground Time Domain Electromagnetic Survey Equipment TDEMUnderground Time Domain Electromagnetic Survey Equipment TDEM

Underground Time Domain Electromagnetic Survey Equipment TDEM


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