Check weighers are generally divided into two categories: dynamic (in-motion) and static checkweighers. Below, we will examine each type:
There are various types of in-motion checkweighers. These checkweighers inspect the weight of products while they are moving on a conveyor belt. If the weight deviates from the preset tolerance, the device takes the necessary action. This is a common feature among different types of in-motion checkweighers.
Checkweighers ensure that products fall within the desired weight range. The process works as follows: the product is transported onto the weighing scale via the conveyor belt. If its weight is within the acceptable tolerance, it continues moving forward, and the production process proceeds. Otherwise, it is diverted from the main line for further action. In-motion checkweighers are also known as conveyor belt scales, in-motion scales, conveyor scales, production line scales, or dynamic scales.
In a static checkweigher, an operator must manually place the product on the scale and read the display to determine whether the weight is too low, acceptable, or too high. Based on this information, the operator decides whether to keep the product in production or discard it. Any scale can be used as a static checkweigher, but most manufacturers use specialized bench or floor scales for this purpose. These models are usually equipped with yellow, green, and red indicator lights to visually show whether the product’s weight is below, within, or above the acceptable limit.
A checkweigher works by comparing the weight of your product to the predefined weight range. For example, if your product is supposed to weigh 100 grams and the allowable tolerance is set to 5 grams in the settings, the product is acceptable within the weight range of 95 to 105 grams. Otherwise, it will be removed from the production cycle.
Checkweighers are especially useful in the food industry, where packaging and nutritional requirements depend on the correct product weight.
Most checkweighers have a display or indicator that shows the weight verification results. A checkweigher consists of the following components:
Most checkweighers are compatible with existing production lines and conveyor systems, allowing seamless integration for automating the weighing process in your factory.
This device is used at different stages of the production process, including pre-production and production, to ensure that the correct weight of raw materials is used in your products. Finally, it weighs the finished product packages to meet customer requirements.
check weight are versatile and used for:
A wide range of products can be weighed, from packaged foods and bagged grains to glass bottles. Weight inspection can determine the correct number of items in a box, the correct number of boxes in a carton, and the correct number of cartons on a pallet. For example, in the beverage industry, bags and cans are weighed to ensure they are completely empty before filling and within the allowable weight range after filling.
check weight verify the allowable weight range of products. For instance, an injection molding company can use a check weights to weigh each part as it comes out of the mold, detecting defective products. In coating processes, quality and thickness can also be verified by measuring the additional weight.
A combination of various items can be classified by weight and directed to the appropriate packing station for sorting or grading purposes. For example, variable-weight products like fruits and vegetables can be classified using a checkweigher, directing them to the proper station based on weight.
Items with different weights can be automatically identified by a check weight system. For example, assembly processes use check weight to confirm the correct parts have been delivered.
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check weight are suitable for a wide range of products and industrial applications, including both food and non-food sectors.
Examples of industries using check weight include:
Essentially, check weight are used in any production line to ensure the weight of the product aligns with the set limitations. They are also beneficial for quality control purposes, alerting you to potential contamination when an unexpected weight increase occurs. However, they should not be used solely for inspection purposes, as check weight can only detect contaminants that affect weight. Low-density particles will not be detected. For improved quality control, you should use combined systems incorporating metal detection or X-ray technology.
Many check weight models are available in the market, designed to meet different product needs. It is crucial to find a solution tailored to your unique requirements. For example, working with fresh or frozen products may require waterproof systems.
You can also compare devices in terms of speed, accuracy, IP rating (dust and moisture resistance), and ease of sanitation and maintenance to choose the best fit for your production lines.
Integrating check weight into production processes offers numerous benefits. Some of the most important ones include:
check weight play a critical role in production lines, enabling weight checks at every stage of production. With wide capacity and a variety of models available, they are applicable to virtually any factory, regardless of industry.
If you are considering installing a check weight in your factory, Packen offers ideal options. We sell a range of systems, including waterproof and combined models, tailored to your product requirements. Our check weight are compatible with existing conveyor systems, making them easy to integrate into your production line.
We assist with setup, train your staff, and maintain your equipment to extend its lifespan. For more information about check weight roles and the benefits of Packen for your business, contact us, and our experts will guide you.
