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Multi-orientation, multi-scan metal detector

08 March 2019

Fortress Technology has introduced a metal detector that inspects low profile, high value products vertically and horizontally concurrently. 

The Interceptor DF (Divergent Field) is a recent development of the company’s two channel, two frequency Interceptor range.
Believed to be the first multi-orientation, multi-scan food metal detector, the Interceptor DF is especially sensitive to very thin metal contaminant flakes and foils that are difficult to detect on low profile foods, including chocolate, confectionery, nutrition bars, cookies and biscuits. The Interceptor DF can also be used to inspect small thin packages of conductive products like cheese and deli-meats with a high value and high market image, for example steak burgers, Parma ham and Parmesan cheese.  

Rather than scanning a select number of frequencies, the conveyor-style metal detector inspects raw, cooked and packaged products using multiple field directions. 

To increase food safety, the Interceptor DF system addresses several previous limitations – orientation, size, geometry and position of metals. It is said to be particularly reliable at detecting very thin flakes and foils that could be introduced to premium foods in the mixing, rolling, cooking, scoring, moulding, slicing or baking processes. 

The system uses multiple coil sets to instantaneously drive the electromagnetic fields in different directions. Rather than missing a metal contaminant because it hasn’t aligned with a specific field, the Interceptor DF looks for signals over a broad spectrum, from multiple angles. 

The stronger disturbance from one field compensates for the weaker signal from another. This increases the probability of identifying and rejecting products containing non-spherical metals by over 100%, including difficult to spot flat metal flakes.

To increase supply chain transparency and product traceability, Contact Reporter software, included as standard, produces a full log of events. These electronic records can be viewed, filtered and exported, and can be used to supplement or replace manual documentation.  

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