Metal detector with higher sensitivity and lower false rejects
August 2016Maintenance, Test & Measurement, Calibration
In the food industry many of the products being inspected for contamination exhibit a phenomenon known as ‘product effect’. This is where the type of product being inspected can itself hinder the inspection technology’s capability to identify that particular contaminant. For metal detection, the extent of this effect normally categorises products as being either wet (showing product effect) or dry (not showing product effect).
Metals are not the only materials that have the ability to conduct electricity and generate magnetic fields. There are many naturally high product effect (wet) applications with high moisture or salt content such as fresh meat, chicken, fish and bread. These products are likely to produce a signal in the metal detector in the same way as small metal contaminants would. This makes it difficult for the detector to distinguish between the product and the metal contaminant.
Mettler Toledo Safeline’s Profile Advantage metal detector delivers up to 50% improved sensitivity to detect smaller metal contaminants when inspecting products that are wet, hot, chilled, cooling or packed in metallised film. The Profile Advantage uses multi-simultaneous-frequency (MSF) in combinations of high and low frequencies simultaneously to deliver the ultimate detection sensitivity with zero false triggering. Built-in product signal suppression technology, two-stage discrimination for frequency and phase cancel the information from these frequency combinations to remove the product signal. This allows for much smaller metal contaminants to be detected in challenging applications, irrespective of packaging type.
Profile Advantage offers proven reliability and ease of use. Single setting operation with intuitive clustering minimises setup time during multiple product changeovers on the production line. The robust stainless steel finish has a choice of sealing standards (IP65/IP69K). Condition monitoring and predictive analytics maximise productivity through increased performance monitoring intervals to increase uptime and improve overall equipment effectiveness (OEE). Onboard OEE reporting is included.
Profile Advantage is designed specifically for inspection of loose, prepacked or packed products on conveyorised production lines. A pipeline option is available for inspection of liquids, pastes and slurries. Enhanced data collection and connectivity options such as Open Platform Communications (OPC), EtherNet/IP and Modbus TCP (Transmission Control Protocol) simplify integration and connectivity to factory management information systems. Intelligent balance control and enhanced vibration/noise immunity combine to make Profile Advantage the most reliable metal detector on the market.
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