Unexploded ordnance (UXO), buried pipelines, mineral deposits, and hidden infrastructure all leave subtle disturbances in the Earth’s magnetic field. Detecting those disturbances requires extremely sensitive electronics. Increasingly, those electronics are taking to the skies.
Magnetometers and gradiometers are instruments designed to measure magnetic fields with high precision. Variations in magnetic fields reveal what lies beneath the surface, making the technology invaluable for applications ranging from mineral exploration and environmental surveys to military UXO detection.
From Boots on the Ground to UAVs
Over time, unmanned aerial vehicles (UAVs), or drones, replaced human operators since they can tow or carry magnetometer and gradiometer systems over terrain far more quickly and at a lower cost.
Today, UAV-mounted systems are widely used in commercial sectors such as geotechnical surveying, pipeline mapping, and mineral exploration.
The Environmental Challenge
Unlike enclosed electronics, UAV-mounted magnetometers are fully exposed during flight. They must operate reliably in rain, high humidity, dust, snow, and muddy or wet environments.
Component solder joints must be protected against moisture ingress, corrosion, vibration, and shock from rough landings. Further, the magnetometer must maintain high signal fidelity to work properly.
Protecting Signal Integrity in Harsh Conditions
One effective solution is epoxy potting compounds to encapsulate and protect critical electronic components potting materials create a robust barrier against water and humidity, while also providing strong adhesion to a wide range of substrates.
For magnetometer applications, electrical performance is just as important as mechanical protection. Epoxy potting compounds such as MG Chemicals 832HD have a low dielectric constant, helping maintain signal fidelity while shielding sensitive circuitry from environmental stress. High compressive and tensile strength further protect electronics from vibration and impact encountered during UAV operation.
Built for Critical Applications
Defense contractors and advanced technology manufacturers rely on high-performance materials to ensure their systems perform reliably in demanding environments. As UAV-mounted systems like gradiometers continue to expand into new commercial and defense roles, ruggedized electronics will remain essential.
Take steps to ensure your designs remain in operation for years to come with MG Chemicals’ potting solutions. Speak with one of our experts to find the right product for your application, request detailed datasheets, sample kits, and expert process validation.
