Load cell is one of the indispensable and important equipment in modern industrial production, and its performance is directly related to the accuracy and efficiency of the production process. So, how can you tell if a load cell is good or bad?This article will introduce you to three detection methods. Load cells
1 Visual inspection.
First of all, we can inspect the load cell visually. A good load cell should have a smooth, neat surface with no visible damage or cracks. At the same time, it is necessary to check whether the connection part is firm and whether the screws are loose. In addition, it is also important to pay attention to whether the label and identification of the load cell are clear and complete, which helps us to understand its manufacturer, model, specifications and other information.
2 Output signal detection.
Output signal detection is one of the important methods to judge the quality of load cells. InResting state, the output signal of the load cellA value that should be zero or close to zero。When appliedLoad, the output signal should increase with the loadIncreases linearly。If the output signal deviates from the linear relationship or fluctuates abnormally, the load cell may be faulty or has a quality problem.
In order to detect the output signal more accurately, we can use a measurement tool such as a multimeter to measure the output signal. When measuring, the load cell should be properly connected with the measuring tool, and the accuracy and stability of the measuring tool should be ensured. By measuring the voltage or resistance value of the output signal, we can tell if the load cell is performing properly.
3 Repeatability testing.
Repeatability testing is one of the most important ways to judge the performance stability of a load cell. In repeatability testing, we:Multiple measurements of the same load are requiredand observe how the output signal changes. If the fluctuation range of the output signal is small, it means that the load cell has good repeatability and stable performance. If the output signal fluctuates widely, the load cell is less repeatable and there may be a quality problem.
When performing repeatability testing, the following points should be noted:
1.Make sure that the load and environmental conditions are the same for each measurement;
2.The average value is taken after multiple measurements as the final result;
3.If the repeatability is poor, further inspection of the load cell's internal structure or circuitry may be required for problems.
To sum up, we can easily judge the quality of load cells through three methods: appearance inspection, output signal detection and repeatability detection. In the process of purchase and use, we should fully understand the performance parameters and use requirements of the load cell to ensure that it works normally and stably. At the same time, load cells that fail or have quality problems should be repaired or replaced in time to avoid adverse effects on the production process.