When weighing containers or monitoring the filling state, Load Cell the horizontal movement of the containers and brackets due to temperature changes must be taken into account. Rigid mounting accessories prevent this movement and eventually produce horizontal lateral forces, Load Cell resulting in measurement errors. This force sometimes causes the sensor to be damaged or even completely broken. This may occur at the load loading point where the eccentric load or the diagonal load may produce torque and lateral forces, Load Cell so a structure that avoids the horizontal force caused by temperature deformation or other factors is chosen.
The use of mounting accessories to assemble the sensor's criteria is to eliminate a wide range of interference. And therefore require specific installation attachments depending on the application. However, Load Cell in the final analysis, only the weighing engineers know the design engineers to determine the interference in the measurement process. So the different sensor structure, not only a wide range of load introduction, Load Cell there are a variety of options for the installation of accessories.
A typical elastomeric support is a plurality of overlapping plates and layers that are interconnected by a vulcanization process. A small force also moves the top and bottom load guides in parallel. So the top support plate can avoid lateral force, and not to the sensor under the support plate additional force. The horizontal translation between the container and the sensor can be up to 15 mm. At the same time, in the translation of the return force, so that the container back to the starting point, the force has nothing to do with the load, Load Cell and is proportional to the translation distance, according to the elastic support model up to 800 Newton, this support can balance tilt up to 1.7 ° Of the container.
This is a sensor designed to autonomously return to the starting point when the weight is loaded with eccentricity, where the physical characteristics of the stable balance are utilized. The sensor as a rocker occupies a load guide surface with a radius of curvature greater than the sensor height. Load Cell The swing of the initial position causes the load point to rise, thus allowing the sensor to be self-centered.
The maximum degree of swing allowed in the technical parameter table, such as the C16 / 40T type, up to 13 mm / 5 °, is never allowed to exceed, due to the swinging of the damage to the sensor and the load introduction point, Load Cell this problem can simply pass Adjust the assembly of the barrier to the appropriate location to solve. In the case of low cost and ease of installation, Load Cell it is sufficient for each of the HBM heads up and down, and the anti-rotation safety device can prevent axial rotation.
Standard beam sensors and C-series sensors with pendulum support and pendulum can achieve self-homing performance, making it possible to manufacture high-precision container scales. Pendulum bearing the structure of the form, can reach 3 ° offset without obvious error, the support point of the horizontal displacement can be limited to a certain range. Most ZPL-type pendulums are composed of two supports and one pillar support, Load Cell and the ZPS-type pendulum supports only one of the pillars and the EPO3 indenter.
If the container is not fully equipped with a sensor, it must be fitted with a fixed or tilted support. When the fixed stand is used, ready-made components can be used. Load Cell Figure 4-9 shows the fixed bearing provided by HBM Supporting the support of the double T bracket, through the bracing to create a very good flexible area, fixed bearings are also fixed in the horizontal direction of the container, Load Cell this method can also not guide the body. It should be noted that the deviation of the sensor will cause the fixed bearing to be slightly bent, causing the error of the measurement signal. This error can be reduced by calibrating the sensor.
The above-mentioned measurement error for the tilting support does not actually occur because there is no bending stress at all, with only slight rolling friction, Load Cell but the horizontal offset of the tilting support is much smaller than that of the fixed bearing, Therefore, depending on the application of different occasions may need to install the guide bar.