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Can checkweighers work with any type of dry ingredients? Product FAQ

Answer

The Thermo Scientific Versa Flex (https://www.thermofisher.com/order/catalog/product/VERSAFLEX) and Versa Flex GP (https://www.thermofisher.com/order/catalog/product/VERSAFLEX) Checkweigher line targets dry packaged applications such as baked goods, snack foods, prepared foods, condiments, pasta/rice/beans, baking ingredients (flour, sugar, etc.), personal care products such as diapers, soaps and creams, as well as pharmaceuticals.

Answer Id: E20454

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Brochure: Versa Flex and Versa Flex GP Checkweighers Product Literature

Thermo Scientific x-ray inspection and checkweigher combination unit Product Literature

Combination systems - checkweighers with metal detectors or x-ray inspection Product Literature

Brochure: Versa Box Checkweigher (CN) Product Literature

How does a checkweigher work? Product FAQ

Answer

A checkweigher is made up of a controller and a weigh frame. The weigh frame typically has 3 sections: Infeed, Weighing section, and Outfeed. The package being weighed goes through the following steps:

- Package moves from the customer's conveyor onto the checkweigher infeed. Note: Conveyor speed of infeed and weigh table are the same
- Package is weighed on the weigh cell of the weigh table
- Package moves onto the outfeed of the checkweigher to be accepted or rejected according to the checkweigher settings
- Accepted package moves onto the customer's downstream conveyor
- Ideal spacing between packages allows for a zeroing operation for maximum accuracy

The packages are moved along by belt (motor), chain (uses motor to pull items forward), and/or skates (slider). If the measured weight does not meet specification, the product is rejected via air blast, pusher, bopper, diverters, or drop flabs.

Answer Id: E20450

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What types of packages can be weighed on a checkweigher? Product FAQ

Answer

Both food and non-food packages can be weighed on checkweighers, including meat, dairy, wet and dry ingredients, baked goods, confectionary products, pharma, personal care packaged items, bullets, bags of construction materials like cement, etc. Types of items that can be weighed on a checkweigher include:

- Rigid (cans, cardboard packages, plastic, glass)
- Soft (plastic, paper, foil)
- Wet (dairy, hummus)
- Dry (rice, oatmeal)
- Raw (chicken, beef, fish, vegetables and fruits)

It is worth noting that loose, continuously flowing products cannot be weighed on a checkweigher.

Answer Id: E20451

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What factors influence weighing accuracy using checkweighers? Product FAQ

Answer

Proper design of the in-line checkweigher can influence accuracy. Here are some of the design factors:

- Product speed
- Product weight and size
- Product transfer onto and off of the checkweigher
- Reject method and design

In addition, conveyors must be level and aligned, belts and chains should be inspected regularly for wear or product buildup, gaps between conveyors should be minimized and infeed and weigh table belts or chains should be running at the same speeds. Other factors include the spacing between products' centers to ensure that more than one product is not on the weighing table at any one time, and calibrations should be done regularly.

Answer Id: E20453

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How fast do checkweighers count or weigh products? Product FAQ

Answer

It depends on the product being weighed and the checkweigher that is installed. Here is an example: The Thermo Scientific Versa 8120 Checkweigher (https://www.thermofisher.com/order/catalog/product/70.181) works with line speeds up to 550 rigid packages per minute.

Answer Id: E20452

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Can checkweighers be washed down? Product FAQ

Answer

Checkweighers can sometimes come in contact with food products that can leak or spill. The equipment has to get washed down regularly to prevent contamination so it must meet IP65 Washdown requirements. Therefore, checkweigher components require materials that can withstand washdown using chemicals. The metal should be fully constructed of ANSI Type 304 SS (stainless steel), which is an austenite steel. For even harsher situations, ANSI 316 stainless is used; it is more impervious to corrosion than 304 SS. Equipment should meet American National Standard ANSI/IEC 60529-2004 for equipment with electrical components. This standard describes a system for classifying the degrees of protection provided by enclosures of electrical equipment for two conditions:

- The protection of persons against access to hazardous parts and protection of equipment against the ingress of solid foreign objects
- The ingress of water

Equipment should be designed with minimal flat, horizontal surfaces and slots to reduce food buildup, and use stainless steel conveyor beds. IP65 enclosures provide basic waterproof protection from water, including jet sprays used during washdown.

Answer Id: E20457

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Specification Sheet: Versa Advantage (CN) Product Literature

How can I tell if final packaged pet food products are being under or overfilled? Product FAQ

Answer

To ensure that pet food processors are not under or overfilling packages, checkweighers are used to verify the correct weight of each package. Accurate weight avoids giving away costly product or from receiving hefty fines from regulatory bodies for underfilling.

Answer Id: E20473

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How fast can machines check the weight of dairy products? Product FAQ

Answer

For dairy products in cartons, cans, bottles, or pouches, a chain checkweigher offers line speeds up to 700 packages per minute. It is appropriate for both dry and wet environments.

Answer Id: E20431

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How fast can machines check the weight of pet food products? Product FAQ

Answer

For pet food products in cartons, cans, bottles, or pouches, a chain checkweigher offers line speeds up to 700 packages per minute. It is appropriate for both dry and wet environments.

Answer Id: E20474

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Specification Sheet: Versa Flex FR44HD Heavy-duty Checkweigher Product Literature

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