How To Overcome Product Effect


Robust Detection Avoids False Rejects

A phenomenon known as “Product Effect” has long been an obstacle to attaining high levels of metal contaminant detection sensitivity in the meat, poultry and seafood industries. For many years, manufacturers have been forced to compromise on detection standards. However, using multiple frequencies simultaneously and innovative software algorithms means the challenge of product effect has now been overcome.

1.What is Product effect?
Product effect occurs when a product’s own characteristics inhibit the inspection device’s ability to distinguish between the product being inspected and the contaminant. Six factors that contribute to product effect are detailed as follow.

2.Why is Product effect important?
Previously, the solution to overcoming product effect was to reduce the sensitivity of the metal detector, but that results in smaller contaminants going undetected, increasing the risk to product safety and of costly product recalls.

3.What is the solution?
METTLER TOLEDO’s Profile Advantage system uses a unique combination of Multi-Simultaneous Frequency and Product Signal Suppression technology (‘3S’ algorithm) to minimize the active product signal and virtually eliminate false rejects.

6 factors that contribute to product effect

1. Product temperature
Whether a product is frozen, hot, wet, chilled or warming can have an impact on the product signal it emits. This variation can lead to high false rejects.

2. Product format
Packaging can affect sensitivity if the material is itself conductive. Loose products may exhibit a different product signal to packaged products.

3. Orientation on the production line
If products are randomly presented as they pass through the metal detector’s aperture, this can alter the active product signal.

4. Moisture or salt content
Water and saline conduct electricity and respond to magnetic fields, so the product can create a signal similar to that of a metal contaminant, making it difficult to inspect.

5. Product consistency
Variances in size and weight as well as water, salt or fat distribution can alter the active product signal of individual products.

6. Product size and shape
Different sized packs or different portion sizes can also result in different active product signals being generated.

METTLER TOLEDO is a leading global supplier of precision instruments and services. The company has strong leadership positions in a wide variety of market sectors and holds global number-one market positions in many of them. Specifically, METTLER TOLEDO is the largest provider of weighing and analytical instruments for use in laboratory and in-line measurement in demanding production processes of industrial and food retailing applications.

The Product Inspection Division of METTLER TOLEDO is a leader in the field of automated inspection technology. The Division incorporates the Safeline Metal Detection and X-ray Inspection, Garvens and Hi-Speed Checkweighing and the CI Vision and PCE Track & Trace brands. The solutions provided by the business increase process efficiency for manufacturers while supporting compliance with industry standards and regulations. Systems also deliver improved product quality which helps to protect the welfare of consumers and reputation of manufacturers.

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