The influence of grounding of weighing sensor on weighing device
There is a stable and stable connection between the load cell and the ground or floating ground, or through the ground screw on the housing and the ground pile, depending on the specific situation. If there is no interference introduced by the ground wire propagation path, for general electronic weighing devices, there is no insulation pad between the sensor and the mounting base, and the embedded iron plate or anchor screw of the electronic weighing device is directly connected. In order to meet the requirements of anti-common-mode interference, a special ground pile should be set up between the sensor and the ground, and the sensor shell should be stably connected.
After the sensor is properly grounded, it can not only effectively suppress the ground common mode interference introduced by the change of ground potential, but also eliminate the interference signal caused by the spatial electromagnetic field, electrostatic induction and other influencing factors on the bridge network. Because the sensor chamber itself is an external shielding cover, it can protect the connection line of the strain gauge inside the elastomer.
