1. Pay attention to the qualifications of packaging scale manufacturers

　　When purchasing computer quantitative packaging scales, the manufacturer's qualifications are the primary indicators to be examined, including the company's reputation, research and development/production capabilities, the number and credibility of peer users, and whether the documents (mainly business licenses, measuring and manufacturing instrument licenses, etc.) are complete.

　　2. Pay attention to the range of the packaging scale

　　The range of the electronic packaging scale instrument refers to the distance between the quantitative points. The range of science is 10 times the range point. For example, a reasonable range of measurement should be 1-10 Kg, 0.5-5 Kg, 5-50 Kg, etc., because the lighter the weight of a single package, the higher the relative error rate, just like using a 100 kg scale to weigh 50 grams of material, the error will be too large.

　　3. When purchasing a packaging scale, pay attention to the measurement accuracy of the scale

　　At present, there are mainly two types of automatic quantitative scales on the market that comply with national metrological regulations: X (0.5) level and X (0.2) level (i.e. error rates of 0.5% and 0.2%). The weighing accuracy of X (0.2) grade products is higher than that of X (0.5) grade products, but among similar products, the packaging speed of X (0.2) grade products is always lower than that of X (0.5) grade products. Therefore, if users have low requirements for measuring speed and high requirements for accuracy, they should choose X (0.2) grade products. Otherwise, please choose X (0.5) grade products.

　　4. Packaging speed is also an indicator of product quality

　　The packaging speed and accuracy of electronic packaging scales are inversely proportional, that is, the faster the speed, the lower the relative accuracy, and vice versa, the higher the accuracy. When selecting a semi-automatic scale, if the speed exceeds 1200 bags per hour, manual bagging will not be able to keep up, so the packaging speed is too fast and has no practical significance! Fully automatic equipment ensures accuracy, and the faster the speed, the better!

　　5. Difficulty in operating the control system interface

　　When selecting equipment, it is not only necessary to choose devices with suitable functions, but also to choose devices with simple and easy to master operating interfaces, which are convenient for workers to operate and maintain on a daily basis. Mainly the operation of the computer controller panel.

　　Progressiveness, stability and reliability of product performance

　　The stability of product performance depends on the advanced technology of the equipment itself and the reliability of the main internal components, as they directly affect important performance indicators such as product service life, measurement accuracy, and packaging speed.

　　6. Manufacturer's after-sales service

　　The after-sales service of manufacturers producing packaging scales is also a very important reference indicator, mainly reflected in whether they have complete installation, commissioning, training, maintenance and other service projects.

　　7. Other conditions

　　In addition to the above factors, the appearance of the packaging scale product, the number of related accessories, the safety of product transportation, the delivery time of the product, the payment method of fees, and so on are all factors that cannot be ignored.

　　When choosing a quantitative packaging scale instrument, attention should be paid to the quality of the product, which is usually reflected in packaging accuracy and speed.