FGA Logger
The FGA Logger is a high-precision fluxgate magnetometer data logger designed for geophysical surveys, environmental monitoring, and drone-based magnetic mapping.
The device records magnetic field data from 3-axis fluxgate magnetometer sensors and combines it with GPS positioning data for precise mapping and analysis.
The logger supports real-time data streaming, SD-card storage, and integration with external systems through USB and UART serial interfaces.
Key Features
- Dual magnetometer support — connect up to two 3-axis fluxgate magnetometers for multi-point magnetic field measurements
- Integrated high-sensitivity GPS — provides accurate geolocation data for each recorded measurement
- High-speed data logging — records magnetic and GPS data at up to 10 Hz
- Flexible data storage — removable SD card storage for large datasets
- Real-time data streaming — data output through UART or USB serial interface
- USB-C connectivity — fast access to recorded data on the SD card
- User-friendly operation — start/stop button with LED indicators
- Factory calibrated — ensures accurate and consistent measurements
- Software compatibility — works with Excel, Matlab, Python, Surfer, and the PolarWave™ DATA app
Package Contents
Each FGA Logger package includes:
- FGA Data Logger unit
- GPS antenna
- USB-C data / power cable
- DB9 connector for UART and power
- SD card (32 GB)
Technical Specifications
| Parameter | Value |
|---|---|
| Number of Sensor Channels | 2 |
| Sensor Input Range | 0 – 3 V differential |
| ADC Resolution | 24-bit |
| ADC Sampling | 2 kSPS dual ADC |
| Data Logging Rate | Up to 10 Hz |
| Sensor Input Bandwidth | 36 Hz |
| Data Storage | SD card (8 – 32 GB, FAT32) |
| Data Format | CSV |
| Serial Interface | UART / USB |
| Serial Protocol | 230400 baud, 8N1 |
| Power Supply (USB-C) | 5 V ±0.25 V |
| Power Supply (DB9) | 6 – 35 V |
| Operating Temperature | −20 °C to +60 °C |
| Storage Temperature | −40 °C to +85 °C |
GPS Specifications
| Parameter | Value |
|---|---|
| Satellite Systems | GPS, GLONASS, Galileo, BeiDou, QZSS |
| Frequency Bands | L1 / L5 |
| Timing Accuracy | < 30 ns |
| GPS Data Rate | Up to 10 Hz |
| Sensitivity | −167 dBm |
| Antenna Connector | SMA |
Device Interfaces
Front Panel
- Start / Stop Button — starts or stops the data logging process
- Status LEDs — indicators for GPS lock, Bluetooth status, and data logging status
- USB-C Port — serial communication with a PC, accessing SD card contents, and powering the device
Rear Panel
- Sensor Inputs (Channels 1 & 2) — connect up to two external magnetometer sensors
- UART Output (DB9 Connector) — provides serial communication and optional power input
- GPS Antenna Connector (SMA) — connects the external GPS antenna
Data Format
Logged data is stored as CSV files on the SD card.
This format allows easy import into:
- Excel
- Matlab
- Python
- Surfer
- GIS software
- PolarWave™ DATA analysis platform
Typical Applications
Geophysical Surveys
- magnetic anomaly detection
- geological exploration
- underground structure detection
Environmental Monitoring
- Earth magnetic field measurements
- geomagnetic monitoring stations
- space weather observation
Drone Magnetometry
- UAV-based magnetic surveys
- aerial magnetic mapping
- mineral exploration
Scientific Research
- laboratory experiments
- magnetic field instrumentation
- materials testing
Industrial Applications
- magnetic shielding analysis
- material inspection
- infrastructure monitoring
Integration
The FGA Logger can be integrated with:
- 3-axis fluxgate magnetometers
- UAV survey systems
- telemetry systems
- embedded computers
- field survey platforms
The device operates in two modes:
Data Logging Mode:
Sensor → FGA Logger → SD Card
Real-Time Streaming Mode:
Sensor → FGA Logger → UART / USB → Computer or Telemetry
Software Integration
FGA Logger data is compatible with:
- Excel
- Matlab
- Python
- Surfer
- GIS tools
- PolarWave™ DATA platform
The PolarWave™ DATA app allows direct upload and visualization of recorded magnetic data.
Related Products
- FG-4 Sensor — 3-axis fluxgate magnetometer
- FG-3+ Sensor — 1-axis fluxgate magnetometer
- FG-3C Sensor — calibrated 1-axis fluxgate magnetometer
- MAG-BOARD — magnetometer processing board
- DIY Gradiometer Kit — complete magnetic survey system