Choosing quantitative packaging scales is a headache for non professionals, but facing many manufacturers in the market, they have no idea and may even fall into misconceptions. I have been working in the packaging scale industry for more than 10 years, and some units always hope that the higher the precision, the better the speed, and the wider the range of weight specifications when choosing packaging scales. Especially when encountering inexperienced salespeople, they will obediently accommodate without bottom line, resulting in the purchased machines not being suitable or unusable. When choosing a packaging scale, in addition to considering your actual needs, share your insights based on years of practical experience in the industry.

Clarify basic packaging requirements based on individual circumstances.

• Firstly, have a certain understanding of the properties of one's own materials, whether they are particles, powders, or special materials, as well as basic properties such as particle size, material density, and flowability.
• The packaging specifications and bag size of the materials.
• Seam form.

Measurement requirements:

• Weighing accuracy requirements

The common accuracy level of packaging scales is X (0.2), which is a proportional quantification. For example, the accuracy requirements for weighing 5 kilograms and 50 kilograms are different. Through the accuracy level comparison table, it is easy to calculate the error range that packaging scales can achieve. Of course, accuracy also has reference materials, for example, the accuracy of flour and stone powder packaged on the same packaging scale is absolutely different.

Material measurement accuracy

• As mentioned above, the actual weighing accuracy of packaging scales is closely related to the properties of the packaged materials, packaging weight specifications, and packaging speed, so the actual significance of measured accuracy is more credible.

Weighing range

• Regarding the weighing range, the impact is actually quite significant. The weight range is not only related to the volume of the measuring device, but also to the accuracy of small measurements due to the increase in the self weight of the measuring device. At the same time, the size of the bag clamping mechanism should also be considered for future operations.

Mechanical structure selection

The structural requirement is to select the appropriate model based on the precision, speed, and weight specifications of different materials, including the feeding mechanism, weighing and bearing structure, as well as the functions and design methods of bag clamping device, bag discharge device, sealing and conveying device, dust removal device, etc. For example, granular materials are generally fed using gravity flow gates. If high precision is required, gravity flow gates can be selected in conjunction with vibration feeding for feeding. Of course, flexible configuration is also necessary. For example, small packages weighing less than 5 kilograms can be fed using both large and small vibration feeding methods. Choose single or double scales according to packaging speed requirements. By clarifying the above points and clarifying the structural requirements, it is possible to narrow down the comparison of models and lock in the final suitable model.

Several suggestions for users who purchase quantitative packaging scales:

• Through the above analysis, it can be concluded that when purchasing quantitative packaging scales, it is necessary to adhere to a pragmatic attitude based on one's own needs and not blindly pursue high indicators. Therefore, it is recommended that users of quantitative packaging scales choose products that comply with national product standards and metrological verification regulations rationally.To improve the convenience, accuracy, and speed of packaging scales in practical use, it is necessary to consider reducing the weighing range of the scale.
• For sites that require fast weighing speed, under the premise of meeting the contractual requirements of both the supply and demand parties, or meeting national and industry standards, appropriate measures should be taken to reduce weighing accuracy and narrow the weighing range.
• For quantitative packaging scales that require a wide weighing range, consider reducing the requirements for weighing speed and accuracy appropriately;From the perspective of safeguarding the interests of the buyer, in addition to detailing the requirements for the quantitative packaging scale in the purchase contract, the buyer should carefully check the content marked on the product nameplate when using the quantitative packaging scale.