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Kunzler and Company, a US processor of speciality meats for supermarkets, delicatessens, schools and restaurants, has installed three Powerphasepro metal detectors from Mettler Toledo Safeline.

The metal detectors have to cope with a wide range of products of varying size, density, moisture and salt content.

Rodney Shultz, facilities manager at Kunzler’s manufacturing plant in Tyrone, Pennsylvania, said: ‘Our sales rep, Bob Dauphinais at Reliant Packaging Systems, visited our plant and saw our production lines.

‘He identified our challenges and anticipated our needs.

‘He helped to customise our first metal detector with a variable-speed drive that allows us to control the spacing and orientation of product running through the metal detector.

‘The more consistently we feed the metal detector, the better the performance,’ he added.

This custom Safeline metal detector, with an aperture measuring 8in (20cm) in height and 17in in width, was installed on a line that packages 25 different products that range in size from 12oz to 11lb.

The line speed varies from 20ft to 70ft per minute, depending on the product being packaged.

According to Kunzler, it only takes 30 seconds to change over the Powerphasepro metal detector.

The company can either pull down a pre-programmed product recipe or it can auto-learn each product.

Featuring an advanced coil design to ensure excellent detection sensitivity, the Powerphasepro system zeros in on all types of metal contamination, including ferrous and non-ferrous tramp metal and stainless steel fragments.

A faraday screen is located between the detector coil and the product to filter out unwanted frequencies, which further improves detection sensitivity while virtually eliminating false rejects.

Triple-frequency operation achieves high sensitivity across a range of products.

The product clustering feature allows a range of products to be run with no operator intervention during changeovers.

At Kunzler, the environment varies from 36F to 38F during production shifts to soaring temperatures and high humidity during sanitation shifts.

The Powerphasepro is designed to handle this extreme temperature fluctuation as well as the high-temperature, high-pressure washdown itself.

Featuring an IP36K-rated control panel, the Powerphasepro exceeds Nema 4X specifications.

Mettler Toledo Safeline

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