APPLIED ELECTROMAGNETIC RESEARCH (AEMR)

KEY WORDS: AEMR, geophysics, electromagnetic sounding, electromagnetic prospecting, electromagnetic instrumentation, exploration, Time Domain EM system (TDEM), TEM, TEM-FAST, TEM-FAST 48, mineral exploration, kimberlite pipes, search gold and nickel deposits, hydrogeology, engineering, environmental investigations, archaeology, pollution, water search, dum leakage, metallic detector, induced polarization, superparamagnetism, transient processes, cross section, imaging, inverse problem solution, profiling, array survey, geological interpretation, MT, magnetotellurics, static shift correction.

TEM-FAST 48HPC

TEM-FAST 48 HPC

TEM-FAST 48HPC is highly portable multipurpose geophysical system based on advanced TEM-FAST technology providing high resolution, efficient operation in any conditions, including industrial city zones with limited space, deserts, mountains, any hard accessible areas. TEM-FAST 48HPC can be applied for solution of very wide range of problems, including environmental investigations, hydrogeological researches, archaeological, mineral prospecting, MT static shift correction and others. TEM-FAST 48HPC can operate with any IBM desktop computer, Notebook or with Handheld computer via standard interface RS 232. TEM-FAST 48HPC generates and sends short pulses of electromagnetic field in the earth and registers its response which depends on the ground’s electric section.
Using computer terminal and taking into account signal and noise level, operator can set the number of pulses needed for precise data processing. After signal accumulating, computer switches system into the state with small power consumption, then does calculations of normalized voltage/current ratios and rms inaccuracy of measurements as well.
Algorithms of measurements and data processing applied in TEM-FAST 48HPC permit to exclude systematic errors connected with battery discharging and temperature drift, to increase signal/noise ratio if signal level small.

SOFTWARE

TEM-FAST 48HPC system is equipped with base software which provides control, viewing of measurement results in digital form as well as apparent resistivity curves and some characteristics of the noise existing during measurements. There is possibility to view different characteristics of noise existing during the equipment operating.
TEM-FAST 48HPC system have also advanced software package TEM-RESEARCHER (TEM-RES-WIN) for fast inverse problem solution in the class of gradient and layered sections directly in the field conditions. EM-RES-WIN gives user possibility to do inversion even if induced polarization (IP) and superparamagnetic (SPM) effect complicate experimental data. Moreover, innovative technology permits to use these effects for extending of conventional possibilities of TDEM method.
TEM-RES-WIN has special tools for mass data processing and construction of 2D or 3D images of geoelectrical sections.

SPECIFICATIONS
Parameter	TEM-FAST 48HPC
Time gates	48 geometrically spaced
Time range	4 - 16000 µs
Transmitter's current	1 A or 4 A
Loop size	5cm × 5cm - 500m × 500m
Sounding depth range	1m - 300m
Per two man-hour output	10 - 15 soundings
Waterproof box	IP65
Dimensions (mm)	330×35×110
Weight (kg)	1.5
Internal battery	12 V, 2 A·h
Sensitivity	~0.1 µV
Display	Notebook or Handheld PC
Operating temperature	-20°C + 65°C

COMPLETE SET TEM-FAST 48HPC

1.   Generating, measuring block with the internal battery in a single case
2.   Cable for connection of the computer with port RS232
3.   Cable for measurements with the single receiving-generating antenna
4.   Cable for measurements with the receiving and generating antenna (4 wires)
5.   Cable for connection of the external battery "Power 12V"
6.   Cable for connection of the external battery "Power 24V"
7.   Test - coil
8.   Charging device with a cable
9.   Antenna 50m × 50m (100 m cable r = 2 Ohm and 2×50 = 100 m, r = 4 Ohm)
10. Additional sockets for antennas (10 pieces)
11. Base system software TEM-FAST 48HPC
12. Manual for base software
13. TEM-RES-WIN software for data processing, analysis, inversion and visualization
14. Manual for TEM-RES-WIN
15. PalmTop PC (optional)
16. Bag for transportation and keeping the device

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Depth of investigations is from several centimeters when searching of small targets till 100 meters (and more in favorable conditions).
TEM-FAST 48HPC is convenient and high efficient tool for prospecting, control and monitoring of ground water, leakage and pollution and for many other applications.
TEM-FAST 48HPC has been used for water prospecting in many areas including: Egypt, France, Germany, Italy, Japan, Madagascar, Nicaragua, Russia, Re-Union, Switzerland, Sweden, Thailand, Tunisia, and others.
In case histories, one can see some examples of application of TEM-FAST technology for environmental, engineering and many other applications.

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QUESTIONS?
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