Zhongshan Frecom Electronic Co., Ltd.
Common Knowledge: Misunderstandings and Correct Methods of Electronic Scale Calibration to Ensure Accurate Measurement
Electronic scales will have accuracy deviations due to environmental changes and wear after being used for a period of time and need to be calibrated regularly, but most users have calibration misunderstandings.
Nov 09,2021
Electronic scales will have accuracy deviations due to environmental changes and wear after being used for a period of time and need to be calibrated regularly, but most users have calibration misunderstandings. Common mistakes include: calibrating with non-standard weights such as coins and books (the weight of such objects is not accurate, leading to calibration failure); calibrating on an uneven ground (calibration needs to be based on a horizontal reference, otherwise the error will be amplified); ignoring the impact of temperature (high and low temperature environments will change sensor performance, and calibration should be carried out at room temperature of 15-25℃). The correct calibration steps are as follows: 1. Prepare standard weights (the accuracy level is not lower than that of the electronic scale; for example, 1kg and 2kg standard weights can be used to calibrate household scales, and 5kg and 10kg weights for commercial scales); 2. Place the electronic scale on a hard and horizontal ground (avoid carpets and soft cushions, and use a level to detect), turn it on and preheat for 10 minutes; 3. Enter the calibration mode according to the operation in the electronic scale manual (different brands have different operations, mostly long-pressing the "calibration" key or combination keys); 4. Place the weights in sequence, wait for the screen to display stably and confirm, and complete single-point or multi-point calibration (multi-point calibration needs to cover 20%, 50%, and 80% of the electronic scale's range); 5. After calibration, test with objects of different weights to ensure that the difference between multiple measurements does not exceed the error range marked by the electronic scale. It is recommended that household electronic scales be calibrated every 3-6 months, and commercial and industrial electronic scales every 1-3 months.
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Troubleshooting and Maintenance Skills for Common Electronic Scale Failures to Extend Service Life
During the use of electronic scales, failures such as no response when turned on, inaccurate data, and screen flickering are prone to occur. Most problems can be solved through simple troubleshooting: 1. No response when turned on: First check if the battery is dead (try replacing with a new battery) and if the battery compartment has poor contact (clean the battery contacts and adjust the battery position); for plug-in electronic scales, check if the power cord is damaged and if the socket is powered on.
Different scenarios have special requirements for the accuracy, functions, and compliance of electronic scales. Improper use may lead to invalid data or even violations: 1. Medical scenarios: Medical electronic scales used in hospitals and physical examination centers must comply with the "Verification Regulation of Medical Electronic Scales," with an accuracy of ±0.05kg and a range of 0-200kg, and must have calibration traceability functions; electronic scales used for monitoring dialysis patients and diabetic patients need to support data storage and export to facilitate doctors' analysis of weight changes; baby scales must be equipped with anti-fall guardrails and soft scale surfaces to avoid harming babies.
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