Hygienic checkweighers for Wash Down:
Dynamic cleaning on the conveyor belt with IP69-certified weighing technology

Hygienic checkweighers are vital if the integrity of all goods produced is to be maintained. This is the case in many industries where dynamic weighing technology is used. For example, in the production of pharmaceuticals or foodstuffs, where lax hygiene quickly takes its toll. This is because omissions not only have an impact on consumer health, but also directly violate applicable laws.

Wipotec has created special Wash Down checkweighers to provide you, the manufacturer of these goods, with the best possible protection. In addition to the contamination that may occur during filling or packaging, your systems must withstand rigorous cleaning cycles. Many of our checkweighers are thus well suited for frequent wet cleaning. As a result, we provide certified IP69 checkweighers with conveyor belts and Weigh Cells that are built to last.

We will be pleased to walk you through the actual operation of such a weighing control as well as the precise specifications that are recommended for product inspection:

Our hygienic design

Certified IP69 checkweighers – or rather IP69K?

In harsh environments, a checkweigher’s conveyor belt, weighing cells, display, and other components often have to withstand years of use. As a result, providers require formally established parameters to adequately assess their reliability. The IP protection classes were introduced for electrically operated devices for this purpose. These apply to all our hygienic checkweighers. But what do these classes actually entail?

Formally, IP stands for International Protection. However, the acronym is increasingly being used to mean ingress protection, which refers to defense against foreign bodies from outside. This designation effectively summarizes the essence of the term and demonstrates its utility for specific weighing technologies. Our Wash Down checkweighers can only function efficiently and accurately if the inside is free of contamination and moisture.

The exact degree of protection is defined by the numbers after the abbreviation. Let’s take Wipotec’s dynamic IP69 checkweighers as an example, as these achieve the maximum protection class. According to code number 6, the weighing system is totally protected from dust and other microparticles. The second figure 9 indicates extended cleaning protection – in this case, the weighing solution can be used not only for spray and water jets, but also for high-pressure or steam jet cleaning.

The DIN 40050-9 standard identifies further application areas. The regulation refers to degrees of protection up to class IP69K, which includes hot water in addition to the aforementioned protection. We can determine together whether this is required for the hygienic checkweighers in your production facility. Our industry experts know their job and will be happy to help you.

Get in touch with your personal contact today to learn more about the best weighing technology for your business:

Weighing technology in action: Dynamic Weigh Cells with IP69K

In the video, we show what our hygienic design actually looks like in practice. The Weigh Cell shown is the heart of many Wipotec Wash Down checkweighers, specifically those in the SL-M-FS series, which is approved for weighing ranges of up to 1,000 g. Our credo: Never leave undesired deposits that could disrupt the normal operation of your checkweigher systems.

That is why we rely on sturdy housings made of durable stainless steel, which, like the checkweigher conveyor belt, are fully waterproof. The sloping design of the cell with separate foundation enables the usual high weighing accuracy, even in high-speed applications. A number of aluminum alternatives are now available, especially for multi-lane solutions.

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Hygienic checkweighers for the food industry

IP69 checkweighers are primarily used in areas where compliance with hygiene regulations requires extensive wet cleaning. These are sometimes caused by the use of corrosive chemicals that contaminate the conveyor belt or other components, without a proper hygiene concept for the checkweigher. This must be avoided. The basic structure of our Wash Down checkweighers is therefore specially designed for trouble-free high-pressure cleaning. We don’t want to see any foreign bodies, either in the product or on the machine.

Aside from cleaning chemicals, the produced goods or their contents can have an impact on the implemented weighing technology. Food, in particular, is frequently problematic. Liquids from foamy dairy products or the pasty fillings of bread and bakery products quickly contaminate the entire system, particularly in case of less hygienic checkweighers. Furthermore, unpackaged raw materials or loose items must be handled properly. Your dynamic weighing system should be prepared for this.

This page provides an overview of our weighing solutions for the food sector, including modules for foreign object detection.

Food checkweighers

Our highlight: Wash Down checkweigher HC-M-WD

Do you need a high-precision checkweigher that always delivers reliable results, even in the most demanding production environments? With this in mind, we developed the HC-M-WD model, which combines optimum weighing accuracy with Wipotec’s innovative hygienic design:

  • Standard design made of sturdy stainless steel
  • Rounded surfaces and targeted product transitions
  • Clearly defined drip edges with additional clearance
  • Generally open design for flexible cleaning
  • As an IP69K checkweigher, the maximum protection class is guaranteed

The application in the video impressively displays that cleaning is possible during operation. With the Wash Down checkweigher, the conveyor belt, housing and modules are cleaned in record time. The more frequently you have to clean, the bigger your savings will be.

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Application example: Wash Down in canned food production

The HC-M-WD hygienic checkweigher also impresses outside of the cleaning cycles. Here you can see the processing of ready-packed food in glass jars. When canned foods of various sizes enter the weighing system, the integrated star wheel effortlessly separates them. The dynamic checkweigher thus guarantees safe and stable product transport, which is equally suitable for pharmaceutical bottles, for example.

Furthermore, the star wheel can be changed in no time, demonstrating the fundamental flexibility of our hygienic design. As usual, the Wash Down checkweigher is IP69-certified and therefore entirely designed for regular high pressure. This includes the user interface on the touchscreen. The central display shows the weighing software results as well as other information. With Wipotec you never lose track!

Further weighing solutions with hygienic design from Wipotec

HC-A-IS-WD: Comprehensive system for quality control in bottling plants and thus ideally suited for checking the weight of cylindrical products. The Wash Down checkweigher is easy to clean and, thanks to the practical rotary star wheel, ideal for the safe handling of aerosol cans or foodstuffs such as bottled drinks.

HC-M-WD-MDi: The mid-range classic has a metal detection module to supplement a hygienic checkweigher. This is a must, especially in the food sector, particularly in conjunction with the sturdy design of the housing, which can also be cleaned completely under high pressure. This means you comply with all regulations at all times.

HC-M-WD-SL: In the heavy load application, we can also impress with a special hygiene concept. With this dynamic checkweigher, the conveyor belt and EMFR Weigh Cell are designed for all kinds of large items in crates, boxes or other heavy packages. Of course, they are also available with up to IP69K certification if required.

SC-WD with X-ray: In addition to weighing control, we are pleased to provide optical inspection systems for your production facility. Our X-ray unit integrates seamlessly with existing weighing technology and gives valuable insights. Our hygienic design once again ensures the right approach in cleaning-intensive environments.

Are you interested in our unique IP69 checkweighers but haven’t found the correct weighing system among these options? We will design your customized product upon request. Or you can browse for it yourself:

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