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.

Corn (scientific name: Zea mays) is mainly produced in the three northeastern provinces of China, Hebei, Shanxi, Shandong, Henan, and Anhui. It is also known as maize, corn husk, corn cob, and corn cob. In Cantonese, it is called corn, and in Minnan dialect, it is called fanmai. It is an annual herbaceous plant in the Poaceae family, an important food crop and feed source, and also a high-yield food crop worldwide. Corn packaging scale is a device specifically developed for measuring corn bags. It has the functions of high measurement accuracy, fast packaging speed, and time-saving and labor-saving. Corn packaging scale, grain packaging scale, corn packaging scale, stick packaging scale

　　The new generation DCS series intelligent computer packaging scale developed by Limin Machinery Co., Ltd. in Xiuwu County, Henan Province is mainly composed of four parts: automatic weighing device, conveying device, sewing device, and computer control. It has the characteristics of reasonable structure, beautiful appearance, smooth operation, energy saving, easy operation, and accurate weighing.　　The host adopts fast, medium, and slow three speed feeding and special feeding agitator structure, advanced digital frequency conversion technology, sampling processing technology, anti-interference technology, and realizes automatic error compensation and correction.　　Suitable for quantitative packaging of loose and non sticky particles and powder materials (such as corn, soybeans, rice, rice, wheat, flour, feed, glucose, plastic particles, potassium chloride, magnesium sulfate, compound fertilizers, organic fertilizers, BB fertilizers, refractory materials, etc.) in industries such as food, grains, seasonings, pesticides, feed, enzyme preparations, traditional Chinese medicine, desiccants, soup ingredients, chemical industry, etc.

　　Common classifications of quantitative packaging scales　　Quantitative packaging scale (also known as packing scale or filling scale) is an active weighing device that actively divides large quantities of bulk materials into small proportional loads of equal mass according to a predetermined order and quantitative value. It is suitable for occupations such as grain and feed to carry out fixed value weighing of exported goods.　　When selecting a quantitative packaging scale　　Firstly, it is necessary to understand the major categories of packaging scales. Packaging scales are often classified based on their layout, that is, according to their adaptability to materials; It can also be classified based on the size of the packaging and different production process requirements.　　1. Classify according to production process requirements　　(1) Net weight quantitative packaging scale. When using this type of scale, the materials are weighed in the weighing hopper and then packed into packaging bags, which improves the measurement speed and accuracy.　　(2) Gross weight quantitative packaging scale. This type of scale operation uses packaging bags as weighing carriers, with materials directly entering the packaging bags for weighing. The equipment layout is simple, and the total height decreases.　　(3) Mobile quantitative packaging scale. This type of scale arranges the scale body, conveyor, sewing machine, air compressor, dust collector, dryer and other equipment on a mobile cart, which can replace the workplace at any time.　　(4) Fixed quantitative packaging scale. This type of scale places the scale body under a fixed compartment, cooperates with conveyors and sewing machines, and uses centralized air sources and dust removal equipment for fixed value packaging.　　2. Classify by the number of weighing buckets　　(1) Double scale bucket type. The double bucket packaging scale can meet the needs of fast packaging. This type of packaging scale often uses gravity feeding method, and with the replacement of two buckets for weighing, the required packaging time is greatly reduced.　　(2) Single scale bucket type. This is a common method, and the commonly used packaging scale is the single scale bucket type. Some scales are made of stainless steel.　　(3) No scale bucket type. Materials with high adhesion tend to adhere briefly to the hopper of the packaging scale, affecting the accuracy of packaging. If not sorted in a timely manner, they may also mold and deteriorate, resulting in substandard products.　　The non scale bucket type packaging scale uses sensors directly connected to the bag clamping organization to weigh the packaging bag and materials together, thus avoiding the occurrence of this situation. Due to the lack of the height of the weighing bucket, the height of this type of weighing equipment has decreased.　　3. Classify by packaging quantity and size　　(1) Constant packaging scale. A packaging scale with a weighing range of 20-50kg is called a constant packaging scale. Packaging bags with a weight range of 20-50kg are of moderate size, easy to stack, and convenient to transport, so this type of packaging scale is widely used.　　(2) Medium sized packaging scale. A packaging scale with a weighing range of 5-20kg is called a medium weight packaging scale.　　(3) Small scale packaging scale. A packaging scale with a weighing range of 1-5kg is called a small quantity packaging scale. Because the packaging quantity is small and the error tolerance is small, this type of packaging scale requires careful selection of sensors.　　4. Classify by feeding method　　(1) Belt feeding type. This method uses a conveyor belt feeder for packaging scale feeding, which has the advantages of simple layout, smooth operation, and power saving. The speed of feeding is controlled by pneumatic gate blocking equipment to control the thickness of the material layer. For granular materials with good fluidity and ordinary powders, it has outstanding universality and is currently widely used.　　(2) Spiral feeding type. The use of auger feeding for packaging scales can overcome the defect of inadequate sealing of belt feeding tissues. There are two types of feeding machines: flat feeding machines and inclined feeding machines. The selection of inclined feeding machines is to overcome the self flow of materials. In order to achieve the desired effect, the outlet of inclined feeding machines should not be lower than the inlet. Usually, two large and fine winches are used to adjust the speed of feeding. When feeding quickly, the large and fine winches run together, while when feeding slowly, only the small winches run.　　(3) Gravity feeding type. Gravity feeding is the use of the material's own quality to feed through free fall. Its advantage is that it does not require rated power, but requires good scattering of the material. Sometimes, in order to achieve uniform and smooth feeding, pneumatic loosening equipment is also used. The speed of feeding is usually controlled by the opening of the large and fine doors, which is suitable for granular materials with good fluidity.