Geometrics G-882 Cesium Marine Magnetometer
A high-sensitivity cesium marine magnetometer designed for detecting and mapping ferrous objects in shallow and deep-water surveys. Its streamlined, lightweight design supports underwater magnetic surveys for pipeline detection, shipwreck investigations, unexploded ordnance (UXO) detection and geological studies.
Speak with our survey specialists to discuss your project requirements.
A high-sensitivity cesium marine magnetometer designed for detecting and mapping ferrous objects in shallow and deep-water surveys. Its streamlined, lightweight design supports underwater magnetic surveys for pipeline detection, shipwreck investigations, unexploded ordnance (UXO) detection and geological studies.
Speak with our survey specialists to discuss your project requirements.
Features
High-sensitivity, non-radioactive cesium vapour sensor
Up to 20 Hz magnetic field sampling
Streamlined fibreglass towfish design
Suitable for shallow-water and deep-tow applications
Compatible with tandem towing alongside side-scan sonar
Internal CM-221 mini-counter for multi-sensor synchronisation
MagLogLite™ software for GPS-positioned data logging and anomaly detection
Specifications
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Sensor Technology: Self-oscillating, split-beam cesium vapour
Operating Magnetic Field Range: 20,000–100,000 nT
Noise: Less than 0.004 nT/√Hz RMS (standard version)
Maximum Sampling Rate: 20 Hz
Depth Rating: 2,730 m (4,000 psi)
Sensor Dimensions: 7 cm diameter × 137 cm length, including fins
Sensor Weight: 18 kg (40 lb)
Power Requirements: 24–32 VDC
Data Output: RS-232, 1,200–19,200 baud
Refer to datasheet for detailed technical specifications, deployment requirements and available configurations.
Applications
Marine UXO Detection Surveys
Subsea Pipeline & Cable Detection
Shipwreck & Debris Surveys
Anchor, Chain & Ferrous Object Detection
Marine Geological Surveys
Magnetic Anomaly Mapping
Survey Configurations & Software Options
The Geometrics G-882 supports a range of marine magnetic survey configurations, from single-sensor deployments to multiple magnetometers operating together for wider coverage.
Towing & Deployment Configurations
- Streamlined, fibreglass sensor housing designed to reduce fouling risks during towing.
- Compact towfish with an integrated carrying handle for easier deployment.
- Additional 6.4 kg weight collars available for deep-tow requirements.
- Direct interface with major side-scan sonar systems for tandem towing.
Multi-Sensor Survey Options
- Internal CM-221 mini-counter for synchronising multiple sensors.
- Multiple magnetometers can operate together to increase survey coverage.
- Optional longitudinal and transverse gradiometer configurations.
Data Logging & Processing
- MagLogLite™ software for GPS-positioned magnetic data logging and automatic anomaly detection.
- MagLog Pro™ available for advanced data logging.
- MagMap™ and MagPick™ software for plotting, contouring and post-acquisition processing.
Software packages, optional accessories and towing arrangements depend on the selected system configuration.
Why Choose Unique Group
Unique Group supports marine geophysical and offshore survey requirements through its Survey Equipment division and international network.
- Survey Equipment Expertise: Assistance with evaluating magnetometer suitability for different marine survey requirements.
- Flexible Equipment Configurations: Project requirements can be reviewed against available sensor, towing and software options.
- Specialised Survey Applications: Equipment enquiries covering UXO detection, pipeline surveys, shipwreck investigations and geological studies.
- Regional Network: Coordination of survey equipment enquiries and regional availability through Unique Group’s international operations.
Equipment configuration and associated services are subject to regional capabilities and project requirements.
Rental or Purchase Options
The Geometrics G-882 Cesium Marine Magnetometer is available for rental and purchase through Unique Group for marine geophysical, UXO detection and offshore survey operations.
Rental
- Suitable for short-term and project-specific magnetic surveys.
- Equipment configurations depend on available sensors, cables and accessories.
- Appropriate for temporary survey mobilisation requirements.
Purchase
- Suitable for organisations conducting ongoing marine magnetic surveys.
- Optional weight collars, gradiometer configurations and software packages can be considered according to project requirements.
- System selection can be tailored to the required survey depth and operational arrangement.
Rental and purchase options are subject to regional availability and equipment configuration.
Worldwide Delivery & Regional Network
Unique Group supports marine geophysical and offshore survey requirements through its international network of regional offices and survey equipment specialists.
Our network spans the Middle East, Europe, Asia Pacific, India, Africa and the Americas.
Availability of the Geometrics G-882, optional configurations and delivery arrangements depends on regional supply capabilities and project requirements.
