BARTINGTON INSTRUMENTS
Page 5 of 13 OM2808/3
installed so that the X axis points north, or towards the front of the vehicle; the Y axis points east,
or towards the right side of the vehicle; and the Z axis points down.
Figure 1. The ‘right hand’ rule.
The centres of the three vector sensors are superimposed; each orientation is denoted on the
sensor head engraving. The point of each vector arrow indicates the positive direction of each
axis.
4. Installing the Mag628, Mag629 and Mag669
4.1. Siting the Magnetometer (Environment Recommendations)
In whatever situation the Mag628, Mag629 or Mag669 is to be installed it is important to avoid, or
compensate for, local magnetic effects. In general:
•
Site the magnetometer several tens of metres from very large ferromagnetic objects that
could become magnetised and create fields exceeding the measuring range of the sensor.
•
Avoid siting the sensor near any ferromagnetic objects that may be subjected to the effects
of magnetic hysteresis, which would affect the sensor in an unpredictable manner.
For these reasons, a magnetic evaluation of any proposed installation site should be conducted
to establish that it is free from magnetic contaminants. It is recommended that such an
evaluation be carried out using total field or resonance magnetometers.
North
+X
Thumb
Down
+Z
2nd Finger
East
+Y
1st Finger
