Magnetometer Module

The magnetometer module can be used to detect anomalies in the magnetic field that could indicate the presence of a large mass of ferromagnetic material in the soil. Its range is a radius of approx. 2 metres.
Detect anomalies in the magnetic field
Built-in bidirectional inclinometer for orientation
Accuracy better than 0,5% of the full scale (FS)
 
Description
A magnetometer is a scientific instrument used to measure the strength and/or direction of the magnetic field. A mass of ferromagnetic material creates a detectable disturbance in this magnetic field. This magnetic anomaly produces a weak alternating magnetic field that is detected by the magnetometer. It's very useful for the detection of 
Unexploded bomb/ordnance surveys
Determination of the length of foundation/sheet piles
Determination of the position of retaining or tieback anchors
Determination of the position of power cables
Magnetometer module details
The magnetometer module can be housed behind a dummy tip or behind a 15 cm2 CPT cone made of a high grade non-magnetic steel. It consists of a non-magnetic housing and has a standard tapered thread on top for connection to the string of CPT-sounding tubes. A “North” marking can be found on the exterior of the housing (Y-axis). The fluxgate sensor in XYZ direction enables to determine the position and orientation of an object. A built-in bidirectional inclinometer in line with the XY sensors with a measuring range of +/-25° (accuracy better than 0.1°) allows for determination of the orientation of the magnetic field.
This product delivers accuracy better than 0,5% of the full scale (FS) and a resolution better than 5nT (10nT for the 250,000 nT version).