Penglai Hongxin Balancer Co., Ltd

Weights are prone to errors during metrological verification, so what are the sources of errors? Let's follow the editor and take a look!

（1） There are errors in the operation of the verification personnel

Physiological testing error. In the process of weight measurement verification, as the executor of the verification work, humans are subject to physiological limitations, and the comparison data cannot reach the level of machine judgment. Especially when reading data, due to their own visual limitations, reading errors or errors are prone to occur, which will have a certain impact on the accuracy of the balance weight verification results. Secondly, the calibration error caused by the operation is not. In the actual weight verification process, the verification personnel need to perform more operations. In the actual operation process, any violation of the weight verification rules at any stage will affect the accuracy of the weight verification results.

（2） Reduced balance selection error and measurement accuracy

Firstly, the error caused by the unequal arm problem of the balance. There are various types of scales, but in the process of weight verification, arm type balances have strong advantages. Once an unequal wall balance is selected for calibration, it is easy to encounter the problem of unstable balance walls, which cannot effectively control the measurement of the balance and increase the error rate of the weight calibration results. Secondly, the error caused by the decrease in measurement accuracy of the balance. The balance should be the main tool for weight verification, but in actual balance measurements, there are many factors that affect its accuracy. Once the accuracy of the balance measurement decreases, it will inevitably lead to weight calibration errors.

Stainless steel weight

（3） The Influence of Temperature, Humidity, and Cleanliness on Metrological Verification

Temperature, humidity, and cleanliness have a significant impact on the calibration of standard weights. When the environmental temperature does not meet the requirements for weight verification, changes in the balance point and unequal wall balance can cause errors, affect the accuracy of balance measurement, and thus lead to errors in weight verification results. Humidity includes humidity and relative humidity. In the laboratory, relative humidity is generally used to represent the humidity of the air. The higher the relative humidity, the wetter the air, and vice versa, the drier the air. When the balance measures mass in the air, the weight absorbs a certain amount of water molecules on its surface, forming a water film. The surface characteristics and environmental temperature difference of the weight directly determine the thickness of the water film, which will inevitably have a significant impact on the accuracy of the weight measurement. In addition, when the weight does not meet the cleanliness standards, it can also lead to measurement errors. When the weight is contaminated with dust and impurities, the accuracy of the calibration results will be affected.

That's the end of this article's explanation. See you next time for more exciting content!