If it is a special industry, how to choose a multihead weigher, which aspects must be fully considered

Author: Smartweigh–Multihead Weighter

Multihead weighers are generally used for weighing and are an integral part of everyone's diet. Multihead weighers are made of rubber material with strain gauges that deform to a certain level under load, but then return to their original position , and lead to a plastic response for each load. Such very small changes can be obtained from strain gauges. There are many types of multihead weighers to adapt to different applications. Common multihead weighers include: a little more multihead weighers, curved beams Type multihead weigher, water level sensor, bearing force multihead weigher, resistance judgment type multihead weigher. How to choose multihead weigher in some special industries? Before choosing, the actual working environment of the multihead weigher should be fully considered, including factors such as high temperature, high and low temperature test, high corrosion, and damage to the signal output by the electromagnetic field. Let's learn more about it! (1) High temperature: High temperature will cause the welding of multihead weigher to change, the glue will melt, and the internal stress field of polyurethane material polyurethane elastomer will also change. High temperature multihead weigher should be used in high temperature geographical environment. (2) Relative air humidity: The relative humidity of the air will lead to the common failure of the multihead weigher short-circuit fault. Therefore, in this geographical environment, an airtight multihead weigher should be selected. Different multihead weighers use different methods, and there will be very serious problems. big difference.

(3) Highly corrosive: In a highly corrosive geographical environment (including wet cold and acid), the polyurethane material of the multihead weigher will be damaged or a short-circuit failure is a common failure. The surface is subjected to a paint baking process or professionally treated with a metal surface layer for corrosion resistance. (4) Electromagnetic field: The electromagnetic field will harm the output signal of the multihead weigher, so the shielding characteristics of the multihead weigher should be checked as harshly as possible to find out whether it has high-quality anti-ionizing radiation professional ability. Damage to the multihead weigher, and if the operation process is improper, it will also threaten the safety factor of the workers at work. Therefore, the multihead weigher used in the geographical environment here is as much as possible the explosion-proof multihead weigher. The selection range of the multihead weigher depends on the large net weight value of the weighing comprehensive service platform and the identification of other factors, and then the application range of the multihead weigher is established. , When selecting the inspection category of the multihead weigher, factors such as weighing, tare weight, vibration and destructiveness, and load should be fully considered to ensure the service life of the multihead weigher. The precision level of the multihead weigher includes rated current load, sensitive performance parameters such as stability, discrete system, eddy current loss error, accuracy error, stress relaxation, zero output, input, output, ground wire resistance, temperature compensation, polyurethane material, polyurethane elastomer raw material, etc. Accuracy is a necessary condition for the use of multihead weigher.

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