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WTEM-1Q/GPS Shallow
TEM System
The shallow TEM system is the company’s latest research product,
which incorporates WTEM-1J/GPS TEM receiver and WTEM-1X small
power transmitter very well. It has the merit of the same sort
shallow TEM systems home and abroad, it is characterized with
big transmitting power, ultra speediness disconnection, high credibility,
ultra strong anti-interference ability (sky electricity, 50 or
60 Hz industry frequency), portability, low consuming electricity.
User can select different configuration for different geologic
problems, to quickly complete various inspections, such as quick
survey, stereo mapping, deep mine finding and shallow sounding,
etc. The system can mainly be applied to prospect metal mines,
coalfield, oil and gas field, terrestrial heat, hydrology engineering
geology, etc.

The System’s Characteristics:
- Integration, multiple function–The system has the function
of transmitter and receiver, it could be easily moved and
simply connected. In addition, the receiver could work with
external big power transmitter for deep exploration by using
cable synchronization or GPS synchronization.
- High credibility, low electricity consuming- elaborate receiver
and power electronic circuits, rational releasing of heat,
firm mechanism structure, imported airproof instrument box.
- Wireless remote control makes you happy- Internationally
and domestically initiated Chinese Pocket PC control receiver
by blue-tooth wireless communication. It can control receiver
and set parameters, startup measurement within ten meters.
This lets you feel the convenience unparalleledly.
- Strong anti-interference- Program-controlled hardware filter,
particular accurate power frequency, data stack and software
provide the instrument strong anti-interference ability.
- Many traces and high precision- Traces number could be set
by the operator, they may be distributed logarithmically or
linearly. High precision crystal oscillation controls timing,
and time-depth relation is steady and exact. The sampling
data window distributes rationally, and reflects the true
underground information. These establish the base to resolve
vary difficult geologic problems.
- Quick power-off transmitter- Internal transmitter is capable
of quick power-off to extent shallow prospecting range as
possible. The disconnection time function could provide exact
transmitter’s true time for interpretation software, thereby
improve the interpretative precision.
- Ultra shallow prospecting depth-It may complete several
meters to one hundred meters’ ultra shallow prospecting depth.
- Friendly user interface, strong function- Chinese Pocket
PC could complete person-machine interface and acquisition
control. Parameter setting, display and data storage, plotting
can be achieved in the field easily.

Technical specifications
1. receiver:
□ The channel number: 1
□ Pre-amplifier gain: 8, 32 times
□ Main-amplifier gain: 1, 2, 4, 8, 16, 32, 64, 128 times
□ Bandpass: 0~50KHZ(linear-phase filter), completely pass
is 0~400KHZ
□ Industrial frequency suppressing: >=80dB
□ A/D bit: 16
□ The minimum sample interval: 1 s
□ The numbers of measurement traces: <=50 traces
□ The stack times: 1~9999
□ Synchronization mode: (1) cable, (2) GPS
□ Power: built-in 12V rechargeable battery (support outside
power), working time>10 hours
□ Pocket PC: pocket PC 2003 system, 320x240 real-color, 64MB
Flash Rom/ 64MB SDRAM, CF card , store more than 100000 sampling
points. Blue-tooth, infrared, serial port.

2. Small Power Transmitter:
□ Transmitting input voltage: 12V, 24V
□ Transmitting voltage: (1) 5.5V~8V (transmitting voltage
input is 12V), adjustable continuously; (2) 5.5V~20V (transmitting
voltage input is 24V) adjustable continuously
□ Transmitting current: <=10A
□ Current testing precision: 1%
□ Power supply frequency: 4HZ, 8HZ, 16HZ, 32HZ
□ Transmitting wave: equal width and dual polarity, +ON, OFF,
-ON, OFF.
□ The power-off time measuring: 0.1 s~100.0 s
□ Typical power-off time: 2.5 s@ transmitting current 3A,
transmitting loop 40m 40m single loop
□ Transmitting loop: 5m 5m single loop ~100m 100m single loop
□ Program-control damp resistance: 50 ~1600 , 50 step, programmable
□ Synchronization mode: outside (cable)
3. Others:
□ built-in charger: 12V, charging current<=1.5A, charging
time<=6 hours (check automatically)
□ Dimensions (L×W×H):486 392 192㎜3
□ Weight: 11.2kg
□ Work temperature: -10 ~ +50
4. Processing Software:
Windows version, one-dimension forward and inverse software,
SURFER software, data transmitting and format conversion software,
etc. It will help you to replay, process, plot the data quickly.

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