Fluxgate Magnetometer Three Axis Fluxgate Magnetometer

Product Description

High Precision Three Axis Fluxgate Magnetometer for Professional Geophysics

Introduction

Welcome to a new standard in weak magnetic field measurement. This Three Axis Fluxgate Magnetometer is engineered for demanding applications such as mine exploration, archaeology, and unexploded ordnance detection. Built around the core principle of fluxgate technology, this instrument delivers exceptional accuracy and stability without the excessive weight or power consumption of traditional systems. Unlike common metal detectors, this device maps the Earth's magnetic field anomalies with sub nanotesla resolution, allowing professionals to locate buried ferrous objects and geological structures with confidence.

How It Works

The system operates through a simple yet sophisticated process. First, the fluxgate magnetic sensor converts local magnetic signals into an analog voltage. This voltage travels through a shielded cable to the data acquisition module, where it is digitized with 24 bit precision. Simultaneously, an integrated GPS records position data. All measurements are stored on an internal SD card, ready for transfer to a computer via USB. The result is a complete magnetic profile that can be analyzed with geophysical software such as Oasis Montaj or Surfer.

Key Selling Points

Unmatched Triaxial Orthogonality
The three axes of the magnetometer are aligned to within ±0.2 degrees. This high orthogonality ensures that when you rotate the sensor in the field, the recorded vector components remain accurate. Minimal crosstalk between axes means simpler post processing and cleaner magnetic maps.

Ultra Low Noise Performance
With frequency domain noise as low as 7 to 10 picotesla per root Hertz at 1 Hertz, this device can detect the faintest underground anomalies. Even rapidly passing targets are captured thanks to a wide bandwidth from DC to 1000 Hertz. Time domain noise is also controlled at 0.1 nanotesla RMS over 0.1 seconds, giving you stable readings in dynamic environments.

Lightweight and Power Efficient
Weighing less than 1000 grams and consuming under 0.5 watts for the sensor, this magnetometer is ideal for extended field campaigns. The entire system, including the data logger, requires only 5 watts at maximum. You can operate for hours without needing heavy batteries or frequent recharges.

Robust PEEK Housing
The sensor shell is made of PEEK, a material known for its corrosion resistance, non magnetic properties, and durability in harsh environments. Whether you work in coastal areas, deserts, or industrial zones, the housing will protect the sensitive internal components.

Wide Dynamic Range
Measurement range spans ±100,000 nanotesla, covering the Earth's magnetic field as well as strong local anomalies. You never need to worry about saturation when flying close to magnetic sources.

Technical Specifications Table

 

 

Parameter	Value
Sensor Type	Three Axis Fluxgate
Measuring Range	±100,000 nT
Triaxial Orthogonality	≤ ±0.2 degrees
Bandwidth	DC to 1000 Hz ( 3 dB)
Linearity	≤ 0.01 percent of Full Scale
Frequency Domain Noise	7 to 10 pT rms per root Hz at 1 Hz
Time Domain Noise	≤ 0.1 nT RMS at 0.1 s
Sensor Operating Voltage	±12 V to ±15 V DC
Sensor Output Voltage	±10 V
Sensor Operating Temperature	20 °C to +60 °C
Sensor Cable Length	0.5 m to 20 m (customizable)
Sensor Dimensions	32 x 32 x 146 mm
Data Acquisition Channels	3
Sampling Frequency	200 Hz
ADC Resolution	24 bits
Internal Storage	SD card, 32 GB
Logger Operating Voltage	DC 9 to 36 V
Logger Power Consumption	≤ 5 W
Logger Dimensions	27 x 100 x 157 mm
GPS Protocol	NMEA0183 (GPGGA, GPZDA)
GPS Refresh Rate	1 Hz

Applications

This fluxgate magnetometer excels in mineral exploration, where subtle magnetic contrasts indicate ore bodies. For unexploded ordnance detection, the low noise floor reveals small targets even in cluttered backgrounds. Archaeologists use it to map buried structures, hearths, and ditches without excavation. In general geophysics, it supports magnetic surveying for environmental studies and engineering projects.

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