How do metal detectors work in food industry

how do metal detectors work in food industry

Part 1: Basics of Metal Detection in the Food Industry

Basically there are several types of metal detectors that operate with different detection methods. In the food industry, metal detectors usually apply the transmitter-receiver method (see graphic). Such metal detectors are equipped with a transmitter coil and two receiver coils. The transmitter coil generates a constant electromagnetic field. How do balanced coil metal detectors work? Balanced coil metal detectors work by creating an electromagnetic field via a transmitter coil. When a product is passed through a metal detector’s tunnel, the electromagnetic field will be disrupted if there are metal particles present in the product. Two receiver coils that are connected to each other will then pick up on this electromagnetic .

Send an email. Metal detectors for food primarily are used for the purpose of consumer protection. Despite maximum care metallic contaminations of food products during the production process cannot be fully excluded. Metal particles that enter the product during the production process or already are contained in the raw material may cause serious injuries of consumers.

The consequences for the producing company are numerous and serious and include compensation claims and expensive recalls. Even bigger and longer-lasting what is sewing thread made of is caused by the negative brand image and the loss of consumer trust caused by impure food products.

Metal detectors for food provide effective protection against ferrous and non-ferrous metals aluminium, stainless steel, etc. They can be installed in every step of the production process and can be used for many different applications, e.

In addition to consumer protection, metal detectors also are used to protect machinery. Even smallest metal particles can lead to machinery failure. Expensive repairs and production foox are the consequences, often followed by revenue decreases. When used for machinery protection, the metal detector is installed directly before the machine now be protected. If, as in most cases in the food industry, consumer protection is the goal, several inspection points are useful. An inspection of raw material has the advantage that metal particles are separated before they are broken up into smaller pieces which might be harder to detect.

Inspections at critical control points HACCPs during the production process are recommended to notice machinery failures such as broken blades in time. Consequently, food products in their final stage after packaging are inspected once again with a metal detector or an X-ray system to fully exclude contamination. For optimal product protection an inspection of raw materials, of how do metal detectors work in food industry indusyry control points, and a final inspection of the finished product are recommended.

Such metal detectors are equipped how to cut down trees in pokemon black a transmitter coil and two receiver coils. The transmitter coil generates a constant electromagnetic field. When a metal particle passes the detector it interferes with the electromagnetic field, causing a signal to be detected by the receiver coils. The electronic unit in the metal detector analyses this signal, evaluates it and signals a metal contamination.

As a rule metal detectors in the food industry are equipped with automatic reject units that directly separate the contaminated product from the production line. We have detected the following country based on your IP address: If this is not correct, please choose your country below.

Where are metal detectors installed in the food production process? How do metal detectors work? Here bow can find all parts of how do metal detectors work in food industry guidelines on contaminant detection in the food industry.

Follow metall. Please select your country The selection of your country allows us to offer the optimal content for you.

Pacific Fisheries Technologists Conference

Feb 07,  · How do you ensure you have the latest food quality control technology? Metal detectors find small particles of nonferrous and stainless steel using coils wound on a nonmetallic frame and connected to a high-frequency radio transmitter. When a particle of metal passes through the coils of a metal detector, the high-frequency field is disturbed under one coil, changing the voltage by a few Author: Bob Ries. Where should I put a food metal detector? Metal detectors can be used throughout the food production process in order to protect consumers by detecting metallic contaminants and preventing the contaminated food from ending up on retailers’ shelves. With packed products, a food metal detector can be placed at the end of line for a final product inspection of metal contaminants. A GUIDE TO METAL DETECTION IN THE FOOD MANUFACTURING INDUSTRY HOW A METAL DETECTOR WORKS The most widely-used type of metal detector in the food industry functions on the principle known as the "balanced coil" system. This was first registered as a patent in the 19th century, but the first industrial metal detector was not produced in the UK until File Size: KB.

Manufacturers must identify hazards, define preventive controls to eliminate or reduce hazards, and determine process parameters for these controls. Then, they must implement and continue to monitor the process to ensure corrective actions are taken and to verify the system is working properly.

Hazards can be biological, chemical including radiological and physical. Physical hazards that need to be addressed include bone, stone, metal fragments, wood, glass and plastic, among others. Preventive controls for physical hazards often include metal detectors and X-ray detection and inspection systems. But how does this equipment work? How are those physical contaminants found?

How do you ensure you have the latest food quality control technology? Metal detectors find small particles of nonferrous and stainless steel using coils wound on a nonmetallic frame and connected to a high-frequency radio transmitter.

When a particle of metal passes through the coils of a metal detector, the high-frequency field is disturbed under one coil, changing the voltage by a few microvolts. The output is used to detect metal. Below is an illustration of a typical metal detector coil system. X-ray inspection systems are based on the density of the product and the contaminant. X-rays have a very short wavelength, which corresponds to very high energy.

As an X-ray penetrates a food product, it loses some of its energy. A dense area, such as a contaminant, will reduce the energy even further.

As the X-ray exits the product, it reaches a sensor. The sensor then converts the energy signal into an image of the interior of the food product. Foreign matter appears as a darker shade of grey and helps identify foreign contaminants, like the stone in the pickle jar in the photo below. This, of course, is just a simple explanation of how a highly complex technology works. If you want to learn more about what food manufacturers and processors need to know about keeping consumers, and their brand, safe, then download our free e-book, A Practical Guide to Metal Detection and X-ray Inspection of Foods.

It is an easy-to-read overview of contaminant detection in the food industry that addresses regulatory compliance and recalls resulting from physical contamination threats, gives descriptions of the types of equipment that are available, outlines factors to consider when choosing equipment, and suggests best practices for certain food applications.

This book is a handy guide to share with your quality assurance team and manufacturing managers, and it stresses the importance of shipping a quality packaged product out the door.

In your blog you share with us about how to do food safety from metal detectors. Well explained information. Liked it very much and image in this post makes it pretty easy to understand. Your email address will not be published. Comments thanks for sharing this informative article,keep sharng. This is very great to be aware of metal detector working. Good post!! I am extremely excited to know how metal detectors work. Great post!

Leave a Reply Cancel reply Your email address will not be published. Get news and research reviews on the topic of your choice, right in your inbox.

Subscribe Now. I would like to receive information about content, events, products, services and promotions from Thermo Fisher Scientific and its affiliates.

I agree for the Thermo Fisher Scientific group thermofisher. I can withdraw my consent and unsubscribe at any time by emailing reply thermofisher. This field is for validation purposes and should be left unchanged.

0 Replies to “How do metal detectors work in food industry”

Add a comment

Your email will not be published. Required fields are marked*