Magnetometer Security: How FG-3+ Sensors Enhance Walkthrough Detector Systems
- fgsensors
- 3 days ago
- 3 min read
In today’s world, where security threats are becoming more sophisticated, it’s essential to rely on advanced and non-intrusive screening solutions. One of the most reliable and effective tools used in modern security systems is magnetometer security—a method that detects magnetic disturbances caused by concealed metallic objects.
The FG-3+ Sensor by FG Sensors, a high-precision single-axis magnetometer is optimized for use in walkthrough detectors and perimeter security systems.
What Is Magnetometer Security?
Magnetometer security leverages magnetic field sensors to identify the presence of ferromagnetic or paramagnetic materials. When a person carrying a metallic object walks through a detection zone, the magnetic field generated by that object creates a measurable disturbance. Magnetometers detect this anomaly and trigger alerts in real time.
This method is increasingly favored for security screening because it is:
Non-invasive
Fast and reliable
Capable of detecting passive, non-electronic threats
Applications include:
Transportation hubs (airports, subways, rail stations)
Correctional facilities
Government and military buildings
Corporate offices and data centers
Event venues and stadiums
Why Choose a Single-Axis Magnetometer for Security?
While some applications require multi-axis sensors, single-axis magnetometers like the FG-3+ are ideal for systems that focus on detecting disturbances in one specific orientation—typically aligned with the vertical axis of a person walking through a gate or corridor.
In walkthrough detector systems, the vertical axis is most relevant. People move through a vertical detection plane, and the strongest magnetic signature from hidden items is often captured best along a single axis.
This makes the FG-3+ a cost-effective and highly sensitive choice for targeted detection.
Introducing the FG-3+ Sensor by FG Sensors
The FG-3+ Sensor is a compact, ultra-sensitive, 1-axis magnetometer designed for precision magnetic field measurements. Developed by FG Sensors, it brings high-resolution data to security applications where reliability and noise suppression are critical.
Key Features:
✅ High Sensitivity on a Single Axis – Detects subtle magnetic anomalies along one axis, perfect for vertical field detection in walkthrough zones
✅ Ultra-Low Noise Performance – Maintains clarity and signal integrity in electromagnetically noisy environments
✅ Compact and Lightweight – Easily integrated into vertical panels, walls, or underfloor mounts
✅ Energy Efficient – Suitable for both portable and permanent installations
How FG-3+ Improves Walkthrough Magnetometer Security
The FG-3+ Sensor enables highly accurate, single-axis monitoring of magnetic fields, making it perfect for use in walkthrough detectors that need to detect:
Concealed weapons
Electronic contraband (e.g. hidden phones, radios)
Magnetic triggers or fuses
By positioning multiple FG-3+ sensors along a doorway or corridor, a detection zone can be created that tracks vertical anomalies as people walk through. The result is:
High-throughput screening with minimal false alarms
Discreet detection that does not disrupt pedestrian flow
Scalability, allowing more sensors for higher sensitivity or wider coverage
Real-World Applications for FG-3+ in Security
Besides walkthrough detectors, the FG-3+ Sensor can be applied in:
Perimeter Intrusion Detection – Detect magnetic disturbances near fences or restricted zones
Covert Monitoring Systems – Integrate sensors into walls or floors for undetectable threat detection
Correctional Facilities – Monitor for hidden electronics or smuggled tools
Its simplicity, reliability, and focus on a single magnetic axis make the FG-3+ a favorite among engineers and integrators building custom magnetometer security solutions.
Why FG Sensors?
At FG Sensors, we specialize in magnetic sensing technology for mission-critical applications. Our sensors are known for precision, low noise, and robust performance in real-world conditions. The FG-3+ delivers everything you need to build a powerful, scalable magnetometer security system without overcomplicating the design.
Learn More
If you're developing a next-generation walkthrough detector or enhancing a secure facility, the FG-3+ Sensor gives you the tools to detect magnetic threats accurately and efficiently.
📩 Contact us today to find out how FG Sensors can support your next security solution.
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