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Detection Capabilities
| Multi-Zone Detection |
| A high number of detection zones is crucial for pinpointing the exact location of a metal object on a person's body (e.g., left, right, center, and at what height). |
An equivalent detector should have a similar or greater number of zones for precise threat identification.
| Sensitivity |
| The ability to detect a wide range of metallic objects, from small weapons to larger items. |
Technically acceptable magnetometers should have multiple sensitivity levels over 200 that can be adjusted to the specific security needs of a location, allowing operators to ignore everyday items while still detecting threats.
| Discrimination |
| The capability to distinguish between threatening objects (like firearms and knives) and harmless personal items (like keys, coins, and belt buckles) is critical for minimizing false alarms and maintaining a high throughput of people. |
This includes the ability to detect both ferrous and non-ferrous metals.
| Uniform Detection |
| The detector should provide uniform sensitivity throughout the archway, ensuring that there are no "dead spots" where a weapon could pass undetected |
Operational Efficiency and Usability A technically acceptable magnetometer must be able to screen a large number of people quickly and efficiently without causing unnecessary delays.
| Characteristic |
| Description |
| High Throughput |
| Features that facilitate a smooth and rapid flow of people are essential. Pacing lights (e.g., "wait" and "proceed" symbols) help control traffic flow. |
Advanced discrimination that reduces false alarms also contributes to higher throughput.
| Interference Immunity |
| The magnetometer must be able to operate reliably in environments with other electronic equipment, such as X-ray machines, without being affected by electrical interference. |
This is often achieved through advanced filtering and multiple operating frequencies.
| User-Friendly Interface |
| The controls should be intuitive and easy for security personnel to operate. This includes features like pre-set programs for different security applications (e.g., airports, schools, prisons), a clear display, and easy-to-understand alarm signals. |
Reliability, Compliance, and Construction The physical and operational robustness of the magnetometer is critical for ensuring long-term, reliable performance.
| Characteristic |
| Description |
| International Standards and Certifications |
| Compliance with international security standards is a key indicator of a magnetometer's quality and reliability. An "equal" item should meet or exceed standards such as those from the Transportation Security Administration (TSA), ECAC (European Civil Aviation Conference), and others. |
| Durable Construction |
| The magnetometer should be built with high-quality, durable materials that can withstand the rigors of a high-traffic security checkpoint. This includes scratch-resistant laminates and heavy-duty aluminum components. |
| Weatherproofing |
| For use in a variety of environments, the magnetometer should have a high IP rating for protection against moisture and foreign objects. For example, the Garrett PD 6500i meets IP55 and IP65 standards. |
| Power and Battery Backup |
| A technically acceptable magnetometer should have flexible power options and the availability of a battery backup system to ensure continuous operation in the event of a power outage. |
