SCS Metal Detection HACCP

Metal Detectors in Food Productions

The task of metal detectors is to detect metallic foreign bodies in non-metallic products, and they are thus used in many industrial production processes, particularly in the food production sector, where great demands are made on product quality and sanitation.

Pure Raw Materials - Incoming Inspection

Producers who can precisely verify raw materials are able to reduce non-conformance costs by making early diagnoses and also by assessing the quality of their suppliers.

Pure Finished Products - Final Inspection

The customer shall receive only pure products having the highest degree of purity which can be realized on a technical basis.

Protection of Production Facilities - Process Control

Metal pieces having managed to enter the production chain can severely disturb or even destroy production facilities.
Down-times of machines and plants can negatively affect the constancy of product quality and quantity.

HACCP - Critical Check Point for Metallic Foreign Bodies

A critical control point refers to a point within the production chain where lacking supervision can mean a non-acceptable risk to human health.


The metal detector operates on the basis of an inductive measuring principle. A high-frequency electromagnetic alternating field is generated by a transmitter coil. If a metal piece passes through the metal detector, the field experiences a change corresponding to the magnetic and electrical properties of the metal piece. The change in the field is measured by a balanced pair of receiver coils, subsequently reprocessed and digitally analysed by the control unit.
This measuring principle reacts to electrical conductivity and magnetism and is therefore able to recognise all types of metals, i. e. non-ferrous metals and stainless steel. However, magnetic metals can be slightly better recognised than non-magnetic metals. The measuring field penetrates the food products and recognises metal pieces even in the interior of the product or in packages.