The first is the metal material of the elastomer used in the load cell. Due to its complicated internal structure, micro-strain occurs between the tiny grains when subjected to external force. After the external force disappears, the micro-strain disappears, but Whether it can be completely restored to the original state without force depends on the metal material of the elastomer.
If the curve of the loading force and the curve of the unloading force do not coincide, the greater the difference, the greater the hysteresis. The difference is mainly due to the stability, uniformity of the material itself, the radial structure after heat treatment, and the like. Knowing the cause of hysteresis, we can reduce the hysteresis by selecting the appropriate metal material and using advanced heat treatment to increase the elastic limit. After the elastomer and the strain gauge are formed, the sensor needs to be sealed with a sealant, mainly for fixing the circuit and sealing, and preventing the influence of the external environment on the performance of the sensor.
On the surface, the sealant is relatively soft after curing, and the strength of the elastomer is almost negligible. This should be considered if applied to small-scale force measurements. When a small force is applied to the elastomer, the deformation of the elastomer is small, and the thickness of the sealant affects the deformation that occurs.
If the curve of the loading force and the curve of the unloading force do not coincide, the greater the difference, the greater the hysteresis. The difference is mainly due to the stability, uniformity of the material itself, the radial structure after heat treatment, and the like. Knowing the cause of hysteresis, we can reduce the hysteresis by selecting the appropriate metal material and using advanced heat treatment to increase the elastic limit.
Analyze the causes that affect the performance of the load cell
A load cell is actually a device that outputs a mass transition signal as a measurable electrical signal. The sensor should first consider the actual working environment of the sensor. This is very important for the correct selection of the load cell. It is related to the normal operation of the sensor, its safety and service life, and the reliability and safety of the entire scale. Sex. So what are the factors that affect the performance of the load cell?