Application:
Mining (mineral location and characterization)
Groundwater characterization
HVDC injection point mapping
Oil and gas exploration
Technical Specifications
WTEM-2J Receiver (Standard)
Number of channel: 1
Pre-amplification gain: 8, 32 times
Main amplification gain: 1, 2, 4, 8, 16, 32, 64, 128 times
Band-pass: 0~50k Hz (liner phased filter), full band-pass 0~400k Hz
Suppression: ≥80dB
A/D: 16 bit
Minimum sample interval: 1μs
Trace number: ≤128
Stacking times:1~9999 time
Synchronization mode: Cable synchronization, GPS synchronization, “GPS + Clock” synchronization when GPS satellite signal is very weak or disappears (optional)
Power source: 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: 340×295×152mm3
Weight: 5.3kg
Working temperature: -10℃~+50℃
WTEM-1D Transmitter (Standard)
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: 525×436×217mm3
Weight: 18.5kg
Working temperature: -10°C~+50°C
Standard configuration of WTEM-2 system:
WTEM-2J TEM Exploration System Receiver
WTEM-1D 10kw High-Power Transmitter
WTEM-2T/GPS Transmitter Synchronized Controller
Pocket PC (PDA) to control the TEM system receiver and the system.
Optional instruments:
PTT-40A Antenna & Adapter
