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Since 2012 - Smart Weigh is committed to helping clients increase productivity at a reduced cost. Contact us Now!
Author: Smartweigh–Multihead Weighter
The multihead weigher is generally used for weighing and is an indispensable part of everyone's daily life. The multihead weigher is made of vulcanized rubber with strain gauges, which can deform to a certain level under load, but then return to its original position. The ductility response to each load can be obtained according to the strain gauge. There are many types of multihead weighers to integrate into different applications. Common multihead weighers include: multipoint multihead weigher, bending beam type multihead weigher, liquid level sensor, support force multihead weigher, resistor strain force multihead weigher. How to choose multihead weigher in some special industries? Before selecting the multihead weigher, the specific office environment should be considered, including high temperature, high and low temperature, high corrosion, and the harm of magnetic field to data signal output. Let's take a look at it in detail below! (1) High temperature: High temperature will cause changes in the spot welding of the multihead weigher, the glue will melt, and the internal ground stress of the polyurethane elastomer will also change. The high temperature multihead weigher should be used in a high temperature natural environment. (2) Ambient humidity: Ambient humidity will cause short-circuit failure of the multihead weigher. Therefore, in such a natural environment, a sealed multihead weigher should be selected. Different multihead weighers are applied in different ways, and there will be very large differences.
(3) Aspect ratio etching: In the natural environment of aspect ratio etching (including moisture and acid in the body), the polyurethane elastomer of the multihead weigher will be destroyed or short-circuited. , to solve the surface layer by sandblasting process or use metal surface treatment technology to develop solutions to achieve anti-corrosion properties. (4) Magnetic field: The magnetic field will affect the output data signal of the multihead weigher, so it is necessary to strictly check the shielding characteristics of the multihead weigher to check whether it has excellent anti-electromagnetic wave radiation performance, and the site of flammable and explosive materials, not only It will seriously damage the multihead weigher, and if the actual operation is not good, it will also threaten the safety of the workers. Therefore, the multihead weigher used in the natural environment must be an explosion-proof multihead weigher. The selection scope of the multihead weigher lies in the evaluation of the larger net weight value of the weighing service platform and other factors, and then to clarify the application scope of the multihead weigher. The closer the detection range of the multihead weigher is, the higher the precision of the weighing body is. , When selecting the detection range of the multihead weigher, factors such as weighing, tare weight, vibration and shock and its load should be considered to ensure the service life of the multihead weigher. The accuracy level of the multihead weigher includes rated load, sensitivity , discrete system, eddy current loss deviation, repeatability deviation, stress relaxation, zero output, input, output, grounding resistance, temperature compensation, polyurethane elastomer raw materials and other performance indicators, precision is a necessary condition for the application of multihead weigher.
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