GEM-2 Broadband EMI Sensor
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GEM is a Registered Trademark
The GEM-2 is a handheld, digital, programmable, broadband electromagnetic sensor. Combining cutting-edge technology with simplicity of use, the GEM-2 is the finest electromagnetic geophysical sensor for geological, environmental, and geotechnical surveys.
The GEM-2 package consists of the sensor boom (ski), the console, a battery charger, and a shoulder strap. It also includes a CDROM containing the manual and the operating software - WinGEM v3 - that runs on Windows.
Technical Specifications
Programmable Operation
Bandwidth: 300 Hz to 96 kHz
Frequency Domain: Single frequency
Multiple frequencies
Typical sampling rate: 30 Hz
Ski: Removable fiberglass foam
2 kg, L 183cm, W 12.5cm
Coil configuration: coplanar
Maximum TX moment: 3 Amp×m2 at 330 Hz
Rechargeable battery 12 VDC
Output: Inphase and quadrature in ppm
Apparent conductivity
Magnetic susceptibility
Powerline amplitude
Realtime GPS input for navigation
Remote operation options – vehicle towed, for instance
Program upload and data download: WinGEM
Ppm to conductivity and susceptibility conversion
1-D layered earth inversion
GEM-2 in Karnak, Egypt
GEM-2 Magnetic Susceptibility
Geophex, Ltd. 605 Mercury St., Raleigh. NC 27603, USA; (919) 839-8515