Marine magnetometers are widely used in marine geological surveys to detect magnetic anomalies caused by subsurface geological structures like volcanic rocks, magnetic minerals, and faults including UXO clearance, archaeological surveys, geological studies, and the detection and mapping of various ferrous objects under the sea. Their high precision and versatility make them valuable assets in marine research, exploration, and navigation. Fluxgate magnetometers provide valuable information about the magnetic properties of the marine environment and helping to unravel the mysteries of the Earth's magnetic field and the geological processes beneath the ocean.
HSF-500 submarine three axis fluxgate sensor is a product with pressure resistance and seawater corrosion resistance developed by Xi’ an Huashun according to the requirements of underwater magnetic measurement. The series fluxgate sensor is packed by non-magnetic pressure resistant shell to ensure the excellent performance of the sensor. The connectors will be industry standard watertight ones. According to the working water depth, it is divided into 300 meters, 3000 meters and 7000 meters, of which 3000 meters and 7000 meters product shells are made of titanium alloy, and the fluxgate sensor with cable type and mooring type can be customized.
Product Features
Low noise, high sensitivity, good linearity, low power consumption, pressure resistance and seawater corrosion resistance
Application
Underwater submarine magnetic survey
Performance Parameters
Index Name | Parameters |
Axis | 1/3 |
Orthogonality | ≤±0.2° |
Linearity | ≤0.01%FS |
Noise | Low noise version | Standard Version | Normal Version |
≤6pTrms/Hz1/2@1Hz | ≤10pTrms/Hz1/2@1Hz | ≤20pTrms/Hz1/2@1Hz |
Bandwidth | DC~100Hz | DC~1KHz | DC~3KHz |
Temperature Range | -20℃~60℃ | -40℃~80℃ |
Note | This is the noise within the range of ±100uT. With the increase of the sensor range, the noise will increase appropriately |
Range/uT, Output Voltage/V, Sensitivity mV/uT
Range | 70µT | 100µT | 250µT | 500µT | 1000µT |
±10V Output | 142.86mV/µT | 100mV/µT | 40mV/µT | 20mV/µT | 10mV/µT |
±2.5V Output | 35.71mV/µT | 25mV/µT | 10mV/µT | 5mV/µT | 2.5mV/µT |
Electrical parameters
Supply Voltage | Working Current | Output Voltage |
±12V~±15VDC | 35mA | ±10V |
±3.6V~±5VDC | 10mA | ±2.5V |
Product Packaging Form

PEEK shell: working underwater 100m

PEEK shell: Waterproof joint (IP68)
working underwater 500m

Titanium alloy shell;
working underwater 1000m

Titanium alloy shell;
Built-in attitude sensor;
working underwater 4000m