Calibration and Fault Position Search of Electronic Scales, Do You Know?

With the development of economy, trade, and technology, electronic scales are increasingly being used in production and daily life. Electronic scales are convenient to operate and have a clear display, making them very popular. As a result, mechanical scales are gradually being replaced by electronic weighing scales. Currently, electronic weighing scales have become the mainstay of weighing measurement. However, as electronic weighing scales are used more frequently, the frequency of malfunctions is increasing.

Electronic scales combine microcomputer technology, weighing sensor technology, and digital display technology, making them an important electronic balance. The working principle of electronic scales is to transfer pressure to the sensor through a force transfer mechanism, then convert the electrical signal to a digital signal through the sensor and display instrument, finally displaying it on the screen.

Before formal inspection, visually inspect the electronic scales

Observe its accuracy and manufacturing license, understand the weighing, registration, and numbering to verify its value. In this article, the practical value and verification of practical value are analyzed in detail. By analyzing previous work, it can be noticed that many weighing equipment manufacturers are not strict and standardized in the manufacture of weighing instruments. That is, in some electronic weighing scales, the identified value and actual practical value differ, presenting significant challenges. The reason for this situation is that the company's manufacturing nameplate does not comply with the standards and is not strictly checked according to relevant regulations, these phenomena can be identified as signs of non-compliance during testing.

To understand the location of electronic weight faults, the simplest and fastest method to use is a sensor simulator

The operation method is to unplug the signal line plug of the weighing indicator, insert the simulator plug, turn on the instrument, and observe if the instrument is working properly. If it works properly, then the balance is not the issue, it may be a fault in the scale body or the signal line of the wiring box; if it does not work properly, then it indicates a fault in the electronic weight display instrument or the front end. This method is qualitative and cannot provide a quantitative analysis. When the electronic weight fails and the instrument does not display correctly, fault location is very effective. However, sometimes the instrument can display correctly, but the weight error and repeatability error are significantly different from the actual value, making it difficult to judge. This sensor can be used to simulate and observe the repeatability of simulated tests, or use standard weights and multimeters for judgment. In this case, it is unlikely for the weighing device to fail, and all components of the weighing mechanism can be directly checked, focusing on the sensor, limit device, and other components.

Electronic scales are very important, requiring relevant personnel to understand the importance of electronic scales and analyze their related factors to ensure the accuracy of use, keeping errors within an acceptable range. Common faults in electronic scales should also be promptly checked and analyzed.

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