Page 41 - Food&Drink Magazine Aug-Sep 2021

There are three key barriers to achieving 100 per cent metal-free products:
1. The metal detector must find
anything, anywhere in any product all the time. That can be daunting considering the production volume from just one line in a day and all the different types of metal pieces that might be part of your factory or in the ingredients. As well, most metal detectors
While some companies are transitioning to X-ray inspection to find foreign objects, the costs can be prohibitive for smaller producers and hard to justify in many applications due to low risk of non-metallic contaminants. The prices of X-ray equipment have come down, but they’re still 2-5 times higher than metal detectors, with more maintenance and a shorter life.
through each frequency at a very rapid rate, effectively acting like five metal detectors in one. You get the benefits of running a frequency close to ideal for any type of metal you might encounter. The probability of detection goes up exponentially and escapes are minimised.
Thermo Scientific’s Sentinel MultiScan detectors enable users to identify contaminants that are up to 70 per cent smaller in volume than previous technologies. Via a simple graphical user interface and report, the user can easily see which frequency(ies) is doing all the work.Thefrequenciesare balanced automatically to reduce errors. They use a proprietary multicoil design to boost 'receive' signals, filtering noise interference and detecting foreign objects. It’s five times the metal detection without five times the false rejects.
SENTINEL 5000
The Sentinel 5000 provides complete flexibility around frequency use. It features per-frequency adjustments, gain, phase, sensitivity and automatic set-up on 1-10 packs. The software has been designed with a user-friendly interface to allow field set-up and balance in minutes. It is suitable for challenging products and applications such as dairy, meat, poultry, bread and other products or packaging with high signal distortion during production and final fill. The software makes it easy to meet the record keeping and traceability requirements that have become integral to so manyfoodsafetyprograms. ✷
Foodmach is the newly- appointed product inspection distributors for Thermo Fisher Scientific in Australia. If you need a metal detector that can be set up, adjusted and diagnosed in minutes, not hours, then chat to the Foodmach team.
FOOD SAFETY
“ You need metal detection, but an on- again, off-again contaminant detection approach is not acceptable... You need multiple frequencies, and more is better.”
don’t easily discriminate between metal shards and foil packaging. The metal signal is already high because of the foil, and it makes it hard to detect a small foreign object.
2. Metal detectors use electromagnetic fields to find things that are magnetic and conductive. Most food products are wet, have salt or contain minerals which when subjected to electromagnetic fields also look magnetic and conductive. Ignoring the ‘product effect’ as it’s termed and finding the metal is not as easy as it seems.
3. Small metal foreign objects have very small signals. The metal detector is operating in a factory with many possible noise sources that can confuse the metal detector electronics and software.
You need metal detection, but an on-again, off-again contaminant detection approach is not acceptable. There is no single best frequency for detecting small field differences because you're dealing with the variables of the metal lurking in your food or beverage product. Using single or dual frequencies isn't safe enough. You need multiple frequencies, and more is better.
What’s needed is a completely new approach to metal detection.
MULTISCAN TECHNOLOGY
Developed by global technology leader Thermo Fisher Scientific, this is the premise behind MultiScan technology. You select a set of up to five frequencies from 50 kHz to 1000 kHz and MultiScan scans
MANAGING ENERGY EFFICIENTLY
HRS provide a range of Tubular and Scraped Surface heat exchangers, components, modules and complete processing systems that help you to optimise production, make the most of raw materials, while reducing energy consumption, waste and emissions.
• Pasteurisation
• Sterilisation
• Aseptic Filling
• Evaporation
• CIP Systems
• Hot Water Sets
info@anz. hrs-he. com
AU: +613 9489 1866 | NZ: +64 9 889 6045 www. hrs-heatexchangers. com/anz
Sentinel Multiscan detectors spot the smallest of contaminants.
www.foodanddrinkbusiness.com.au | August/September 2021 | Food&Drink business | 41