Why Is The Multi-head Combination Weighing Scale So Accurate?

With the rapid development of modern industry, packaging industry in packaging accuracy, packaging speed, packaging range and other aspects also have higher requirements, traditional quantitative automatic packaging scale has been difficult to meet these requirements, and the multihead combination weigher is developed under this requirement, it and the traditional quantitative automatic packaging scale there are the following differences:

 1. The difference in weighing accuracy caused by different weighing principles

(1) The weighing principle is different

Quantitative automatic packaging scale is one side of the feeding side weighing, in the arrival of the target weight data before continuous feeding, when and the target weight difference a little must be added to the object, that is, after the coarse measurement and then fine measurement, such as the object is larger or heavier when there is a larger error, which affects the accuracy of the scale. The computer combined balance is composed of a number of weighing units with independent feed and discharge structure, the general computer combined balance is composed of 8 ~ 32 weighing units. The computer uses the principle of permutation and combination to automatically optimize the load of each weighing unit, and obtains the best and most close to the quantitative value of the combination for packaging. For example, a computer combination scale with ten weighing units will weigh each weighing unit and read the weight data of each weighing bucket into the computer. The computer will choose the optimal combination. According to combinatorial mathematics, ten weighing units can realize a total of 1023 combinations, and the computer will select the combination closest to the target weight value from the 1023 combinations. In this way, the above fine weighing is said to be large, and it is difficult to achieve quantitative value of the work. The computer combination scale takes the combination closest to the target weight as the final result.

(2) The reliability of test data varies

Because the traditional quantitative automatic packaging scale is feeding side weighing, so for the Wieser sensor is in the dynamic situation of weighing, if the object is affected or beat, will make the sensor induction of unstable weight data caused by error, and the vibration feed of the computer combination scale is carried out on the buffer hopper, weighing hopper is carried out in a stable situation, Therefore, the weight data obtained is of high accuracy.

(3) Drop error

This error for quantitative automatic packaging scale is a very significant error, weighing bucket weight value reached the set value, although the electromagnetic vibration feeder has stopped, but stop the moment, weighing bucket to vibrator a section of the existence of the called thing will eventually fall into the bucket produced the so-called drop error, although some quantitative automatic packaging scale use to shorten the feeding time to reduce the drop error, However, due to the flow rate, feed uniformity and other uncertain factors, there are still different degrees of error. The computer combined scale is fed from the buffer hopper to the weighing hopper, the weighing hopper is completely stable after issuing instructions for weighing, so there is no drop error.

2. The difference in weighing speed

The traditional quantitative automatic packaging scale generally needs to go through the weighing process of coarse measurement and fine measurement, especially the fine measuring process needs to be added bit by bit, which takes a long time and affects the weighing speed. For example, the weighing speed of the quantitative automatic packaging scale below 1 kg is generally in 20 ~ 30 packs/minute, and the high speed multihead weigher in the rapid optimization of the combined calculation of the computer generally 14 weighing units of the scale can reach 100 ~ 120 packs/minute, 4 ~ 6 times faster than the weighing speed of the quantitative automatic packaging scale, and easy to cooperate with a variety of packaging machines. Greatly improve the efficiency of packaging, more suitable for modern production management needs.

3. The difference in weighing range

Under the same accuracy, the weighing range of the computer combination scale is larger than that of the quantitative automatic packaging scale. In general, the weighing range of the quantitative automatic packaging scale is controlled within 4 times under the same accuracy, and the weighing range of the computer combination scale in the small weighing section can reach more than 10 times. It can also be seen from a large number of test results that there is a difference in weighing range between the two. For example, in the weighing range of ten grams to 1 kg, the computer combined scale can reach the accuracy level of X (1), especially in the small scale is rare. If you want to keep the accuracy level unchanged, quantitative automatic packaging scale only reduce the scale range, the formation of multi-stage scale, can only rely on the production of multiple series of products, in order to achieve a certain requirement of the manufacturer. The average manufacturer will hardly accept this phenomenon. This brings limitations to its practical application, which cannot meet the requirements of different packaging specifications (10-1000g) but similar precision in some production fields.

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Customers' requirements for packaging of fruits and vegetables are getting higher and higher. Their requirements are more inclined to multi-batch, small batch, short cycle, less contact, etc. Work efficiency and safety factor are highlighted. Major fresh fruit and vegetable manufacturers, retail supermarkets, and vegetable market distribution factories have made efforts to build their own fresh processing and distribution centers. Realizing Intelligent upgrade in product packaging, weighing and sorting.

Fruits and vegetables are of different sizes, heavy and light in weight, and also contain water. In the process of weighing and packaging, how to achieve accurate measurement while ensuring food quality.

Multihead Weigher Functions and Features

1. Adopt high-precision digital sensor, fast sampling speed and high precision;

2. Can be reset manually or automatically and dynamic zero tracking;

3. The latest optimized sampling algorithm to improve weighing accuracy;

4. Multiple feeding hopper discharges can effectively solve blockage;

5. Intelligent fault detection and error reporting; Accurate positioning to solve problems;

6. The combination of weighing and counting functions to improve counting accuracy;

Mechanical properties

1. Standard universal parts design and strong interchangeability;

2. It is used for 5-liter volume hopper, suitable for weighing conventional large-weight materials and has a wide range of applications;

3. The upper feed hopper and lower discharge hopper are easy to disassemble for easy cleaning;

4. The chassis "return" type structure design; The whole machine structure is stable and the appearance is harmonious and beautiful;

In addition to various intelligent weighing and packaging equipment, our company has more intelligent equipment in development and testing.

It is also the unshirkable responsibility of UUPAC to continue to empower traditional agricultural automation and facilitate the rapid development of agriculture!

Meeting ASTM and JIS standards assures users that the results are recognized and accepted worldwide, adding value to their testing outcomes.

The GT-RA02 Mask Bacterial Filtration Efficiency Tester is an advanced device specifically designed to accurately measure the bacterial filtration capacity of masks. Its efficient and reliable testing process makes it the preferred tool for mask manufacturers, research institutions, and quality testing departments. This article will detail the operation steps of theMask Bacterial Filtration Efficiency (BFE) Tester, helping you conduct testing efficiently and safely.

Final Weight Confirmation and Data Analysis: Once the samples reach a constant weight, click “Count” on the control screen to calculate the moisture regain results. Review the final data in the "Statistical Reports" section for a summary, and print the results for record-keeping.

Key Features of emi-Automatic Ventilate Quick Constant Temperature Oven

Benefits of Using the Constant Temperature Oven for Textile Testing
The Constant Temperature Oven is a robust tool that significantly improves testing efficiency. Its high precision, coupled with advanced features like forced convection and automatic airflow control, ensures that textile manufacturers receive accurate moisture data quickly. This accuracy is crucial for maintaining quality control in industries that rely on textile moisture consistency, like apparel and upholstery manufacturing.

Comprehensive Testing Methods

• Athletic shoes: to assess the effects of repeated bending on the sole and upper during long-term sports activities
• Casual shoes: testing the durability under daily wear conditions
• Work shoes: to test fatigue resistance under special working conditions
• Safety shoes: to ensure long-term reliability in industrial environments

And determine its flexing resistance or indicating the cracks of shoe or shoe sole through reciprocating flexing movements under the specified angle and frequency.

Compliance Advantages

• Improved product quality: Compliance with ISO 24266 Method A allows manufacturers to produce footwear that meets high quality benchmarks, resulting in increased customer satisfaction.
• Improved market competitiveness: Products that comply with international standards are more likely to be recognized in the global marketplace, thereby improving brand competitiveness.
• Reduced returns and complaints: Durable footwear reduces the likelihood of returns and customer complaints, saving costs and maintaining brand reputation.

GESTER delves into the importance of the Printing Prototype Machine in synthetic fiber dyeing, exploring its features, applications, and benefits.

Achieving accurate color matching is particularly challenging with synthetic fibers due to their resistance to dyes. The Printing Prototype Machine allows for meticulous testing of dye formulations and application techniques, enabling technicians to perfect the process before scaling up to full production. Its customizable scraping settings ensure that even the most stubborn synthetic materials can achieve vibrant, uniform colors.

Challenges Addressed by GT-D25 in Synthetic Fiber Dyeing
Synthetic fibers often exhibit characteristics like hydrophobicity, which makes them resistant to water-based dyes. Additionally, their chemical structures may interact differently with dyes, leading to inconsistent results. The Printing Prototype Machine GT-D25 mitigates these challenges by enabling precise control over every aspect of the dyeing process, from dye application pressure to scraping speed and distance.

For example, when working with polyester—a common synthetic material—the machine’s adjustable scraping strength and variable speed control help ensure that the dye penetrates evenly without causing damage to the fabric. Similarly, for nylon, which is prone to color bleeding, the circulate scraping mode allows for a more controlled application that minimizes these issues.

  On October 12, the National Development and Reform Commission issued the "Notice of the National Development and Reform Commission on Further Deepening the Market-oriented Reform of Coal-fired Power Generation On-grid Tariffs" (Fagai Price [2021] No. 1439), proposing to adjust coal-fired power generation transaction prices up and down The scope is no more than 20% of the benchmark electricity price, and it is clear that the document will be implemented on October 15. The increase in electricity prices is not good news for industrial and commercial companies, but it is indeed good news for photovoltaic companies. PV installation has now become a rigid demand. Distributed photovoltaics have different application scenarios in many places. Specific examples illustrate:

1.  Hosptial

  As a public service organization with high energy consumption, hospitals face great pressure in the future energy saving, emission reduction and consumption reduction work. The installation of photovoltaic power stations on the roof of the hospital actively explores the construction and development of green hospitals, and promotes the concept of green buildings and energy saving. The scientific application of consumption reduction technology is particularly important.

2. School

The school has the advantages of installing photovoltaic power plants: ① The power station is built on the roof of the school, which is a large science popularization base; ② The school has a wider roof, good structure and stable power consumption; ③ The school has stable operation, clear property rights, and relatively financing easy.

3. Highway

  Photovoltaic + highway has been widely used, making full use of the space resources of the highway, realizing the organic integration of photovoltaic power generation, transportation, energy saving and emission reduction, and road maintenance. Using highways as a new carrier of photovoltaic power generation led the new trend of the photovoltaic industry, created a new image of green highways, and laid a good foundation for the later smart highways. Photovoltaic is generally installed in the service area of the expressway, in the middle or on both sides of the road, in the tunnel or directly paved on the highway.

4. Industrial plant/park

  Industrial plants are the most widely used and most industrial and commercial projects. The installation of photovoltaic power plants in industrial plants can use idle roofs to revitalize fixed assets, save peak electricity bills, and use surplus electricity to connect to the Internet to increase corporate income, and it can also promote energy conservation and emission reduction, and generate a good society. benefit.

  In order to improve the reliability of lightning protection of distributed photovoltaic power plants and the safety of the human body, protective measures must be taken against voltage transients and surges. Jinli Electric’s photovoltaic surge protection devices can be offered.

The intelligent lightning protection system introduces the concept of intelligence into the lightning protection system, integrating the three major modules of "intelligent SPD online monitoring" + "lightning warning online monitoring" + "ground resistance online monitoring". It uses modern microcomputers and communication technologies to collect monitoring and collected data, so that lightning protection can be predicted in advance, from the previous passive protection to active protection. At the same time, it is more convenient for lightning protection product maintenance and management to be more timely, more convenient and more effective. On the basis of the above functional modules, the intelligent lightning protection monitoring system also has a graphical operating system that integrates lightning protection, operation monitoring, equipment management, report analysis, historical records, warning and user management.

SPD online monitoring: real-time monitoring of the working status of theSPD (such as leakage current, residual voltage, aging degree) to ensure its effective operation.

Ground resistance online monitoring: Continuously measure the resistance value of the grounding system to detect poor grounding or corrosion problems in time.

Lightning warning online monitoring : Combines meteorological data with electric field sensors to predict lightning activity and issue warnings in advance.

Advantages analysis:

1. Real-time monitoring and active early warning

Limitations of traditional lightning protection: Relying on manual regular inspections (such as once a year), sudden problems may be missed (such as instantaneous failure of SPDs and damage to the grounding system after a lightning strike).

Advantages of intelligent systems

1）Real-time feedback of SPD status: Once the leakage current exceeds the standard or the residual voltage is abnormal, the system will automatically alarm and generate a maintenance work order.

2) Dynamic monitoring of ground resistance: When the ground resistance value exceeds the threshold, an alarm is triggered immediately to ensure safe discharge of current during lightning strike.

3) Lightning warning accuracy: predict lightning activities 30 minutes to 1 hour in advance togain protection time for key facilities (such as airports and data centers).

2. Data-driven preventive maintenance

Traditional method: Maintenance relies on experience and judgment, and it is difficult to predict the life of equipment.

Intelligent system: Through long-term data accumulation, analyze the aging rules of SPDs and the changing trends of grounding resistance, and formulate targeted maintenance plans.

Case: A chemical plant discovered the SPD leakage current in a certain area increased year by year through monitoring data,andavoided the paralysis of the production line caused by lightning strike after replacingthe spd in advance.

3. Improve safety and reduce losses

Direct benefits: Reduce the risk of fire and equipment damage caused by lightning strikes; protect sensitive equipment (such as medical instruments and servers) to avoid data loss or business interruption.

Indirect benefits: Reduce insurance claims and accident compensation costs; enhance corporate safety image and increase customer trust.

4. Reduce long-term operation and maintenance costs

Traditional model cost: Manual inspection is expensive, and repair costs for sudden failures are high.

Intelligent system cost: The initial investment is higher, but the frequency of failures can be reduced in the long term through preventive maintenance.

Data shows: after a communication base station adopted intelligent lightning protection, the average annual maintenance cost was reduced by 40% and the failure rate decreased by 70%.

Necessity analysis

1. Coping with the high sensitivity of modern equipment

As the integration of electronic devices increases, their ability to withstand surges decreases significantly. Traditional lightning protection can only protect against direct lightning strikes, whileintelligent systems can fully resist threats such as inductive lightning and operational overvoltage.

2. Adapt to complex environment needs

Special places: such as oil storage tank areas, data centers, high-speed rail stations, etc., have extremely high requirements for lightning protection reliability, and the real-time monitoring and early warning functions of the intelligent system are indispensable.

Geographic factors: Areas with high incidence of lightning (such as tropical and mountainous areas) require more precise protection strategies. Smart systems can optimize lightning protection layout through data analysis.

3. Promotion of regulations and standards

International standard: IEC 62305 explicitly requires continuous monitoring of lightning protection systems.

Domestic policy: GB/T 21431-2015 "Technical Specifications for Testing of Lightning Protection Devices for Buildings" encourages the use of online monitoring technology.

Industry requirements: Electricity, communications, transportation and other fields will gradually incorporateintelligent lightning protection into mandatory safety standards.

4. The inevitable trend of digital transformation

The advancement of concepts such as smart cities and Industry 4.0 requires the simultaneous intelligentization of infrastructure and safety management. As the core link of safety assurance, the lightning protection system must be integrated with the digitalization process.

  Regardless of TN system or TT system, the connection wires at both ends of the SPD connected to the live conductor and PE line should be short and straight. The IEC standard stipulates that the total length of the SPD connection wire should not exceed 0.5m. This is because the lightning impulse current has high-frequency characteristics, and the lightning impulse overvoltage applied to the protected electrical equipment is the residual voltage on the SPD plus the Ldi/dt high-frequency voltage drop on the connection wire (L is the inductance of the wiring at both ends of the SPD, which is proportional to the length of the connection wire, and di/dt is the steepness of the change of the lightning impulse current). The residual voltage of the SPD is determined by the product performance and cannot be changed, while the Ldi/dt on the connection wire can be reduced in the design of the electrical device by reducing the length of the connection wire, that is, reducing the inductance. Therefore, it is best to install the SPD directly between the live conductor busbar and the PE busbar of the distribution box to minimize the length of the connection wire. Now some SPD products have been made according to the modulus of the miniature circuit breaker in the distribution box so that they can be directly installed in the distribution box, which is very beneficial to shorten the length of the SPD connection wire.

  If this is difficult to do for some reason, the SPD can be installed elsewhere. In this case, it is best to use a "V" connection method for the SPD, as shown in Figure 1. The length of the SPD connection line in the figure is almost zero, but this connection method will encounter some difficulties and inconveniences in actual construction.

Figure 1 V-shaped connection in SPD connection