Differences between Dynamic Explosion - proof Checkweigher and Ordinary Checkweigher

2025-01-10

There are mainly the following significant differences between the dynamic explosion-proof checkweigher and the ordinary checkweigher:

I. Applicable Environments

The ordinary checkweigher is suitable for environments such as general production workshops and logistics warehouses without the risk of flammability and explosion, like the packaging workshops of food processing factories and the production lines of ordinary daily necessities. There are no special requirements for the concentration of environmental gases and dust. However, the dynamic explosion-proof checkweigher is specially designed for hazardous environments and is applied in petrochemical plants, natural gas processing plants, areas with the risk of gas leakage in coal mines underground, workshops for manufacturing fireworks and firecrackers, etc. These places contain flammable and explosive gases or dust. Using an ordinary checkweigher in such environments is very likely to cause explosion accidents.

II. Explosion-proof Design

The key components of the dynamic explosion-proof checkweigher, from the outer casing to the internal circuits and sensors, have all undergone special explosion-proof treatment. Its outer casing is made of high-strength explosion-proof materials, which can withstand explosion impacts and has excellent sealing performance to prevent flammable and explosive gases and dust from entering the inside of the equipment. The internal circuits adopt an intrinsically safe design to limit energy release, so that even in the event of a malfunction, it will not generate electric sparks sufficient to detonate the surrounding environment. In contrast, the ordinary checkweigher completely lacks these explosion-proof designs and cannot operate safely in hazardous areas.

III. Safety Certifications

Based on the particularity of the usage scenarios, the dynamic explosion-proof checkweigher must pass a series of strict explosion-proof safety certifications, such as the ATEX certification internationally and the explosion-proof certificate in China. These certifications ensure that it meets the explosion-proof requirements in terms of design, manufacturing, and performance. The ordinary checkweigher does not need to go through such professional explosion-proof certification processes and can be put into the market for use as long as it meets general standards such as those for conventional quality and measurement.

IV. Balance between Precision and Speed

The ordinary checkweigher is usually optimized in terms of precision and speed according to ordinary production needs. The focus may be biased towards high-precision static weighing or high-speed rough screening, and the emphasis can be flexibly adjusted according to the product type. The dynamic explosion-proof checkweigher not only needs to conduct rapid detection in hazardous environments to ensure that the production line does not stop but also has to accurately judge whether the product weight is qualified in the high-speed dynamic process to prevent unqualified products from flowing into the next link due to misjudgment and causing potential safety hazards. It needs to achieve a perfect combination of high precision and high speed under complex working conditions.

V. Price and Cost

Due to the use of special materials, advanced explosion-proof technologies, and the complicated certification processes it has gone through, the research and development and production costs of the dynamic explosion-proof checkweigher are high, and its selling price is usually several times or even higher than that of the ordinary checkweigher. The later maintenance cost cannot be underestimated either. It requires professional personnel to use professional tools and accessories to carry out maintenance in accordance with explosion-proof specifications. In contrast, the maintenance of the ordinary checkweigher is relatively simple and has a lower cost. Ordinary technicians can operate it, and its accessories are highly universal and affordable.