|
Overhauser
Magnetometers and Gradiometers
(Ground & Stationary)
Overhauser
magnetometers take advantage of key phenomena –the ability to use radio
frequencies (RF) signals to excite both protons and electrons contained
in a mixture of proton-rich solvent and electron-rich free radicals, and
the fact that electrons can be induced to add their net (higher) energy
to that of protons. Overhauser geophysical equipment delivers high
sensitivity (15 pT /
ÖHz
@ 1 sample /second),
no heading error and lightweight operation.
Potassium
Magnetometers and Gradiometers (Ground & Stationary)
The optically pumped
magnetometer takes advantage of key phenomena, namely, the use of narrow
spectra Potassium and light modulation physics for magnetic
measurements. GEM is the sole manufacturer of
K-Mag
geophysical equipment. Ultra-high sensitivity
(3.5 pT /
ÖHz
@ 1 sample /second)and
sampling speeds make the K-Mag an effective geophysical instrument for
surveys requiring high detail as well as vehiclular surveys.
Potassium
Magnetometers and Gradiometers
(Airborne)
The
GSMP-30A airborne
magnetic sensor is based on a unique optically pumped
Potassium technology - a technology that offers an order-of magnitude
increase in sensitivity (1.5 pT /
ÖHz
@ 1 sample /second) over other types of optically pumped magnetometer
systems. It also provides reduced "heading" errors, highest absolute
accuracy and decreased maintenance costs.
Proton Precession Magnetometers and Gradiometers (Ground & Stationary)
Proton Precession magnetometers use DC
currents and magnetic fields to polarize protons in a proton-rich
liquid, and then measure their precession frequency. GEM offers the most
advanced Proton Precession magnetometers available with a sensitivity of
200 pT /
ÖHz
@ 1 sample /second.
Research and Development, and the release of the v7.0 version have led
to geophysical instruments that deliver high quality data combined with
the classic value of a standard Proton Precession system.
Scalar
Magnetometers (Stationary)
The
GSM-90 EUROMAG is a scalar geophysical
instrument of high absolute accuracy (0.2nT) and low long term drift
(0.05nT / year). It is optimized for use in magnetic observatories, long
term monitoring arrays in volcanology, etc.
SuperGrad (Stationary)
This special gradiometer is
a system based on the Optically Pumped Potassium (i.e. K-Mag) instrument
– a unique technology that was developed in response to the United
States Geological Survey’s need for an ultra-high sensitivity magnetic
gradiometer. The
GSMP-20S3 SuperGrad gradiometer is currently in use for
earthquake research in Israel and Canada.
Vector
Magnetometer
(Stationary)
The
delta Inclination
delta Declination (dIdD) is a vector magnetometer offering
monitoring of the inclination and declination as well as total intensity
of the earth magnetic field.
The
Suspended dIdD instrument is the total field magnetometer / gradiometer
of choice for customers who require minimal drift, simplified
observatory setup, minimized ongoing system calibrations, and
continuous, stable measurement.
Calibration
Magnetometers and Gradiometers
(Ground and Stationary)
For simple applications,
customers may be interested in the
GSM-8 (Proton Precession) and GSM-9 (Overhauser)
magnetic instruments. These are basic geophysical instruments (i.e.
without any memory) for calibration of fluxgate magnetometers or for
simple magnetic reconnaissance programs.
Accessories
for Magnetometers and Gradiometers
GEM magnetometer and
gradiometer accessories are high quality add-ons that enhance
system capabilities or upgrade system components with the latest
technologies. Available accessories include:
• Batteries and chargers
• Cables
• GPS
adaptor kits
•
Sensors
• Spare
boards
• Spare
parts kits
• VLF
sensors and attachments
Users may also be interested in
magnetometer carts
to enable high productivity ground and vehicular surveys. GEM can also
assist in design and integration of vehicular platforms for snowmobiles
and all terrain vehicles (ATVs), etc.
GEM Advanced Magnetometers.
Our World is Magnetic.
|
