Magnetic survey, Gravity survey, IP survey, Spectrometer survey, Seismic survey, Geodetic survey

Magnetic survey

The magnetic survey technique measures the localized magnetic variations in the Earth's magnetic field caused by buried man-made ferrous objects and natural mineralized zones. As a result, it is a versatile exploration tool frequently employed in a wide range of applications, from archeological and engineering studies to large-scale regional trends of mineralization. The company employs several proton precession sensors that possess greater dynamic ranges for more accuracy.




GSM-19 Proton magnetometer

From robust field units to efficient survey modes and fast data downloading, GSM-19 is designed to deliver the maximum value in a proton precession system.
The GSM-19 also provides numerous technologies that differentiate it from other systems. For example, the proton precession system with integrated GPS (optional) for high-sensitivity, accurately-positioned ground surveys.
With v7.0 upgrades, GEM's proton precession system leads in sensitivity, memory, base station technology and other areas.


Sensitivity: 0.15 nT @ 1 reading per sec.
0.05 nT @ 1 reading every 4 sec.
Resolution: 0.01 nT
Absolute Accuracy: +/- 0.2 nT @ 1 Hz
Dynamic Range: 20,000 to 120,000 nT
Gradient Tolerance: over 7000 nT/m
Samples at: 60+, 5, 4, 3, 2, 1, 0.5 sec
Operating Temperature: -40C to +50C

Operating Modes
Manual: coordinates, time, date and reading stored automatically at minimum 3 sec. interval
Base Station: time, date and reading stored at 3 to 60 second intervals
Remote Control: optional remote control using RS-232 interface
Input / Output: RS-232 or analog (optional) output using 6-pin weatherproof connector

Storage - 32 MB (# of Readings)
Mobile: 1,465,623
Base Station: 5,373,951
Gradiometer: 1,240,142
Walking Mag: 2,686,975 Dimensions
Console: 223 x 69 x 240 mm
Sensor: 170 x 71mm diameter cylinder

Console: 2.1 kg
Sensor and Staff Assembly: 2.2 kg

Standard Components
GSM-19T console, GEMLinkW software, batteries, harness, charger, sensor with cable, RS-232 cable and USB adapter, staff, instruction manual and shipping case.



Total Magnetic Intensity Map
Reduce to Pole Map
Analytic Signals Map
Tilt and Horizontal derivative Maps....