Magnetometer – Detects 3D magnetic fields down to a micron

 

OWIS (GE) is manufacturing precision positioning stages and takes part in special engineered projects.

An example is the magnetometer.

The power of a magnetic field can be detected pretty well by Hall-Effect sensors with 1% accuracy. Using the so called NMR-effect it can be detected precisely in 3D.

Challenges for this project are:

• high resolution in space

• contactless very compact measuring system

• to measure magnets with very inhomogenous fields

1 % of field accuracy corresponds to only some micrometers for 3D positioning resolution. The target resolution is better than a micrometer.

Measuring the magnetic field is a further challenge, as for each measuring probe, only one field component is detected. Detection of field characteristics closer than 1 mm becomes more complicated due to the housing of most sensors. 3D-sensors, which detect all fíeld components are too large for measuring close to the probe so a special sensor was developed.

In case you have any questions after having read this article, or when you are interested in additional information or pictures, then please contact us by phone at +31 (0)297-266 191 or by e-mail abos@laser2000.nl

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