Vector Measurements And Conventions - Bartington Mag690 Operation Manual

environment. High stability circuitry ensures that a minimum of ten years' service should be
expected.
The sensor has no power supply or data processing abilities of its own and must always be
connected to a power supply to be able to function.
The flying lead cable supplied as standard with the Mag690FL enables the user to choose their
preferred connector.
The Mag690MX and Mag690U include low-cost connectors for users working in laboratories or
intending to fit the sensor inside their own enclosures.
The standard Mag690 has a pre-fitted circular connector rated IP67 for use in locations where
the sensor will be exposed to the elements.

3.1. Vector Measurements and Conventions

The magnetometer produces three independent analogue output voltages in response to the
magnitude and direction of the orthogonal components of a magnetic field. A 'right-hand' co-
ordinate system is adopted (Figure 1). In this system, the X, Y and Z axis correspond to the
thumb, first and second finger respectively of the right hand. By convention, the magnetometer
should be installed so that the X axis is arranged to point north, the Y axis to point east and the Z
axis to point down.
1st Finger
North
Thumb
BARTINGTON INSTRUMENTS
East
+Y
+X
Figure 1. Illustration of the Right Hand Rule
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Down
+Z
2nd Finger
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