Industrial Metal Detection Systems | Safeline Metal Detector | MT

Metal Detection - Safeline

Detecting and rejecting metal contamination in food and pharmaceutical applications

Industrial metal detectors and metal detection systems can safely detect and reject metal contamination from production lines to help manufacturers achieve compliance, minimize risk of product recalls and reduce production downtime. Metal detection systems are available for a range of food, non-food and pharmaceutical applications. Our portfolio includes tunnel and throat metal detectors, and gravity fall, pipeline, pharmaceutical and conveyorized metal detection systems.

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What is an industrial metal detector?

An industrial metal detector or metal detection inspection system inspects raw or processed foods or non-food products and pharmaceutical products for metal contamination and safely rejects contaminated product from the production line. Food processing companies use industrial metal detectors to comply with food safety standards, retailer codes of practice and legislation.

A HACCP audit (Hazard Analysis Critical Control Point) will establish the most relevant critical control points, indicating the best installation location for the metal detector.

How does an industrial metal detector work?

The majority of industrial metal detectors are balanced coil systems. Three coils are wound onto a non-metallic frame and each coil is exactly parallel with the other two. We explain exactly how metal detectors operate in our Metal Detection Guide. You can read more about this from page 8 of the guide.

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How sensitive is a metal detector?

The sensitivity of an industrial metal detector can vary depending on the application, the metal detector manufacturer and the metal detector itself. Sensitivity performance is determined by the diameter of a sphere made from a specific type of metal. The sphere must be reliably detectable when placed in the center of the aperture of a tunnel metal detector. A tunnel metal detector loses sensitivity the larger the aperture size.

Dry products such as confectionery and cereals, are relatively easy to inspect. Detectors operating at high and ultra-high tuned frequencies (typically in the region of 800kHz and above) deliver high levels of overall sensitivity and are especially good at detecting stainless steel type contaminants.

When inspecting wet or conductive products such as fresh meat, poultry, cheese, fish and metallized film packed products, the situation is different. The wet product itself creates a 'product effect signal' in the detector – and this signal needs to be cancelled out before inspection can begin. Innovative multi-simultaneous frequency technology combined with a product signal suppression algorithm can be used to overcome product effect, detecting significantly smaller metal contaminants.

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