Vertical Differential Magnetometer
High-sensitivity vertical differential magnetometer probes for borehole and underwater applications, compatible with SBL10 and DBL15 probe systems.
Key Features:
✔️ Vertical differential magnetometer for precise magnetic field gradient detection
✔️ 400 mm base distance between single-axis fluxgates for accurate measurements
✔️ Compatible with SBL10 and DBL15 borehole or diving probes
✔️ Aluminum probe tube for operation at depths up to 100 m
✔️ MIL-grade connectors ensure secure and reliable connections
✔️ Corrosion-resistant sealing bell for underwater and harsh environments
✔️ Sensitivity and performance comparable to FGM650 probes
✔️ Ideal for explosive ordnance detection, geophysics, and underwater surveys
Vertical Differential Magnetometer
The Vertical Differential Magnetometer contain two single-axis fluxgate sensors separated by a fixed 400-millimeter baseline within an aluminum probe tube rated for submersion to 100-meter depths. This FGM400 gradiometer measures magnetic field gradients by comparing readings between upper and lower sensors, providing identical sensitivity specifications to the FGM650 probe model. MIL-grade connectors seal all electrical contacts against saltwater intrusion and corrosion during extended underwater deployments.
The aluminum housing protects internal electronics while maintaining non-magnetic properties that prevent sensor interference. A corrosion-resistant sealing bell covers the connector assembly to ensure waterproof integrity under hydrostatic pressure. The FGM400 integrates directly with SBL10 borehole systems and DBL15 diving probe platforms through standardized interface connections. The 400-millimeter sensor spacing optimizes gradient detection of buried metallic objects at typical survey depths.
Unexploded ordnance clearance divers lower the Vertical Differential Magnetometers into harbors and coastal waters to locate submerged bombs and naval mines before dredging operations commence. Environmental contractors insert FGM400 probes into monitoring wells to detect leaking underground storage tanks and buried drums containing hazardous materials. Geotechnical survey teams deploy these gradiometers in exploratory boreholes to map subsurface geology and identify ore body boundaries during mineral resource assessments. Archaeological marine units mount the probes on remotely operated vehicles to search for shipwreck debris fields and lost cargo in deep water.
Tactical Supply Pakistan distributes the FGM400 gradiometer with SBL10 and DBL15 compatible connection hardware for immediate borehole and underwater survey deployment. The company provides replacement sealing components and MIL-spec connectors for field maintenance.
Why does vertical sensor separation improve buried object detection compared to single-point magnetometers?
The differential measurement cancels uniform background magnetic fields while amplifying localized gradients from nearby ferrous targets, significantly improving detection range and reducing false signals from distant geological features or infrastructure.
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At Tactical Supply Pakistan, our relationship with you doesn't end after a sale. We are dedicated to making the long-term performance and reliability of our high-quality tactical and supplied equipment. Our commitment is to provide you with seamless support and peace of mind.
- Free Installation: We'll set up your new equipment for you, so it's ready to go. You can focus on your work while our engineers handle as per the guidelines for manufacturer.
- Maintenance: We offer quick replacements where necessary, to keep your gear in top condition. Our team will make sure your equipment is always ready when you need it.
- Customer Support: We're always here to help. Our support team is available to answer your questions and assist you long after you've made a purchase.
- Planned Preventative Maintenance: Our service includes preventative maintenance to keep your equipment in peak condition and prevent future issues.
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