INNOVATION IN MAGNETICS DS3434/5. Mag612. Miniature Three-Axis Fluxgate Probe.

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1 INNOVATION IN MAGNETICS DS3434/5 Mag612 Miniature Three-Axis Fluxgate Probe

2 Mag612 Miniature Three-Axis Fluxgate Probes Mag612 Miniature Three-Axis Fluxgate Probe This miniature fluxgate probe is designed for integration into systems requiring precision measurements where space is limited, such as mobile systems and wearable technologies. This probe is available as sensor only or together with suitable drive electronics. Alternatively, a suitable fluxgate electronics design document is available for customers wishing to design their own electronics. Bartington is a registered trademark of Bartington Instruments Limited in the following countries: Australia, Brazil, Canada, China, European Union, India, Israel, Japan, Mexico, New Zealand, Norway, Russia, Singapore, South Korea, Switzerland, Turkey, United Kingdom, United States of America, and Vietnam.

3 Mag612 Product Identification Product name Code Item Noise Range Mag612 No code Probe only 20pTrms/ Hz at 1Hz Determined by electronics U Probe + unpackaged electronics >10 to 20pTrms/ Hz at 1Hz ±90µT, ±250µT, ±500µT Features Mag612 Small probe size: 20 x 20 x 20mm Measuring range ±90µT, ±250µT and ±500µT (probe with electronics) Narrow noise specification: 10 to 20pTrms/ Hz at 1Hz at 25 C (probe with electronics) Linearity error % Typical Applications Mobile systems Wearable technology Confined space applications

4 Mag612 Miniature Three-Axis Fluxgate Probes Mag612U Specifications Performance Number of axes Polarity Three (right hand XYZ co-ordinate system) +ve non-inverting output when pointing North Measuring range ±90µT ±250µT ±500µT Bandwidth (-3dB) Measurement noise floor 3kHz >10 to 20pTrms/ Hz at 1Hz at 25 o C Scaling 89mV/µT 32mV/µT 16mV/µT Scaling temperature coefficient <100ppm/ o C Start-up / settling time 99% of final value in 0.5s Offset (in zero field) ±300nT max at 25 C Offset temperature coefficient <±1nT/ o C Scaling error ±0.5% at 25 C Alignment error <0.5 o Orthogonality error <0.5 Linearity error Frequency response Hysteresis Excitation breakthrough % (least squares fit) <5% amplitude error DC to 1kHz <0.1% range for exposure to 10 x range unpowered <50mV pk-pk at ~15.625kHz typical Environmental Operating temperature range Storage temperature range Humidity (electronics) -40ºC to +65ºC -40ºC to +85ºC Not protected: PCB assembly (conformal coating) Mechanical (probe only) Dimensions excl. cable Weight (excluding Hirose connector if applicable) Connector & Cable Mounting 20 x 20 x 20mm (±0.1mm) 72g ±7.5g (including cable) Molex on 3 metre tail (28AWG PVC wires + polyolefin insulation sleeve) 4 off mounting holes M2.5 Ø2.7 thru CSK to Ø5

5 Mechanical (electronics only) Dimensions Weight Output connector (P2) Probe input connector (P1) Mounting 30 x 90mm (3mm component height both sides excluding connectors) 12g ±1.5g Molex (plus 8 solder pads for direct wiring) Molex (plus 8 solder pads for direct wiring) 4 off mounting holes Ø3mm thru Electrical Supply voltage Current consumption Analogue output Output impedance Maximum load capacitance ±11V to ±15V DC +47mA, -11mA ±8V (unbalanced, single ended) 10Ω nominal >1000pF without oscillation

6 Mag612 Miniature Three-Axis Fluxgate Probes Mag612 Probe Specifications Performance Number of axes Polarity Three (right hand XYZ co-ordinate system) +ve non-inverting when pointing North Measurement noise floor 1 <20pTrms/ Hz at 1Hz at 25 C Scaling 1 Scaling temperature coefficient 104μT/mA typical <100ppm/ o C Start-up / settling time 99% of final value in 0.5s Zero field offset <±300nT max. at 25 C Offset temperature coefficient <±1nT/ o C Alignment error <3 Orthogonality error between axes <3 Linearity error Frequency response Hysteresis Bandwidth 0.005% (Least Squares Fit) <5% amplitude error DC to 1kHz <0.1% range for exposure to 10 x range unpowered DC to 3kHz minimum (-3dB level) 1 Value will depend on electronic drive and sense circuit. Environmental Operating temperature range Storage temperature range IP rating (not including connector) Compliance -40ºC to +65ºC -40ºC to +85ºC IP67 (1m) RoHS compliant Mechanical Dimensions excl. cable Weight Connector & Cable Cable Probe only Mounting points available 20 x 20 x 20mm (±0.1mm) 72g ±7.5g (excluding Hirose connector if applicable) 3 metre tail (28AWG PVC wires + polyolefin insulation sleeve) Molex off mounting holes M2.5 Ø2.7 thru CSK to Ø5

7 Electrical Primary resistance 7.5Ω ±20% Primary inductance 650µH ±20% Secondary resistance 44.5Ω ±20% Secondary inductance 5.1mH ±20% Recommended primary coil drive current Recommended excitation frequency 75mA peak AC-coupled 16kHz nominal

8 Bartington Instruments Ltd 5, 8, 10, 11 & 12 Thorney Leys Business Park Witney, Oxford, OX28 4GE. England Telephone: +44 (0) Website: The specifications of the products described in this brochure are subject to change without prior notice.