Weighing transducer is a kind of output device that converts quality signals into measurable electrical signals. Weighing transducers will inevitably produce errors during use. So what is the cause of errors during use? The following editor will introduce to you what are the reasons that affect the effect of weighing transducer?

　　As the metal material is the elastic body of the weighing transducer, when the tiny particles between the external force and the micro strain disappear, the micro strain disappears after the external force disappears, but whether it can be completely restored to the original non-stress state will depend on the metal material of the elastic body. Variety.

　　If the load force curve does not match the unloading force curve, the greater the difference, the greater the hysteresis value. The difference mainly comes from the stability and uniformity of the material itself, the radial structure after heat treatment, and so on. Knowing the cause of hysteresis, we can reduce the hysteresis by selecting suitable metal materials and using advanced heat treatment methods to increase the elastic limit. At present, the commonly used elastomer material in the domestic market is 40CrNiMoA, which can achieve good comprehensive mechanical properties after a reasonable heat treatment process.

　　The strain gauge of weighing transducer is mainly composed of sensitive grid, substrate, coating and lead. It is the resistance strain effect on the sensitive door through the sensitive resistance strain effect. If the material itself has hysteresis, the strain gauge also has hysteresis. At present, well-known strain gauge manufacturers in the world are manufacturing strain gauges with full consideration of hysteresis and adopt self-compensation measures to reduce hysteresis to the lowest level. This is also a factor that must be considered when selecting a load cell.

　　After the elastic body and the strain gauge are formed well, the sensor needs to be sealed with a sealant, which is mainly used for fixing the wire and sealing to prevent the external environment from affecting the performance of the sensor. On the surface, the cured sealant is soft, and the strength of the elastomer is negligible. This effect must be considered when applying to a small range of forces. When a small force is used as an elastic body, the elastic body deforms very little, and the thickness of the sealant affects the deformation.