BARTINGTON INSTRUMENTS
Page 4 of 8
OM3836/2
3. Introduction
The Mag646 is an unpackaged single-axis fluxgate sensor that provides highly linear magnetic
response and low hysteresis. The sensor consists of a single, feedback-stabilised, fluxgate
sensing element arranged along one of two directions, in line with the PCB or perpendicular to
the long side of the PCB.
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.
Regulating the power supply internally ensures that the Mag646 is suitable for battery-powered
operation, over both long and short cables.
4. General Description
Figure 1. Mag646 sensor
Key:
1. PCB header
2. Sensing Element
3. Mounting Holes
5. Connections
5.1. Cable Recommendations
The Mag646 electronics board provides unbalanced output lines for analogue signal
transmission. Suitable shielded cables can be supplied.
Cables are particularly prone to wear and damage if twisted, flexed beyond their design limits, or
subjected to excessive or repeated movement. All cables should be mounted securely in place.
When designing your own cable, the following recommendations should be followed:
2
3
1
3
3
3
