What is water meter verification? What are the factors that cause errors in water meter verification?

  I believe everyone knows that the water meter is mainly used to measure the water consumption. When the water meter is being tested, errors will inevitably occur. Do you know what causes the error in this situation? I have something to say here, hoping to clear up your confusion.

  The water meter is the main measuring instrument for the water users to measure the water consumption. Water meter verification is a process of verification operations in accordance with the regulations stipulated by the measurement department and related organizational departments. A series of experiments are used to measure the error of the water representation value, and the water meter is mandatory to evaluate. As a commonly used measuring instrument, the water meter is directly related to the interests of the enterprise, so it is necessary to pay attention to the accuracy of the water meter verification in specific work.

  On the whole, the main factors for errors in water meter verification are as follows.

  1. Errors caused by the water meter itself

  The quality of the water meter is not good enough. The water meter is a high-precision measuring instrument. Whether the water meter has a high verification level will largely depend on the quality of the various components inside the water meter. At present, the types of water meters are very complex, and the materials and operating mechanisms are also quite different. If the selected water meter material and assembly process have insufficient compatibility, it will inevitably have an adverse impact on the accuracy of water meter verification. In the process of assembling water meter components and overall structure, if there is an incorrect assembly process, it will also affect the accuracy of water meter verification. For example, there are a large number of unpolished metal burrs on the parts, the gear engagement state is not ideal, and the tightness of the water surface cover is unreasonable. These situations will have an important impact on the water meter verification results.

  The water meter verification device also has a key impact on the accuracy of the verification results. For the error factors brought by the verification device, part of the reason is that the quality of the verification device itself is not good enough, and there are abnormal performance problems in the actual operation; another part is the verification error caused by the environment where the verification device is located. The verification device has a relatively high sensitivity to the quality of the surrounding environment. Under normal circumstances, the verification device needs to be in a better environment, such as low air humidity and good ventilation, but once the environment around the verification device lacks light and ventilation for a long time Poor conditions and high air humidity will cause errors in the calibration device.

  2. Errors caused by external environmental factors

  In addition to ambient humidity, ventilation effect and light intensity, ambient temperature will also have a greater impact on the accuracy of water meter verification. When the ambient temperature is below the freezing point or higher than 30°C, it will have a significant impact on the water meter verification results. This requires strict control of the ambient temperature of the verification device. When the water pressure of the water supply is unstable, it will also have a significant impact on the accuracy of the water meter verification. In addition, the water quality of the water supply will also have a key impact on the accuracy of the water meter verification. Once the water quality fails, for example, the water contains too many algae, floating objects and other impurities, it will significantly interfere with the water meter verification results, resulting in the accuracy of the verification results. decline.

  3. Errors caused by human subjective factors

  For the water meter verification work, whether the operator's technical level and business ability are high enough will greatly affect the final result of the water meter verification. Some operators do not pay enough attention to the water meter verification work, and there are illegal operations in the actual verification process, which will directly lead to inaccurate verification results. For example, the air remaining in the water supply pipes and water meters was not completely exhausted before the verification work began. In addition, some operators have the problem of not careful work, neglect the operation inspection and maintenance management of related facilities and equipment in the process of water meter verification, and many parts have aging problems, but they have not been effectively dealt with. These factors will lead to water meter verification. An error occurred in the process. Even individual operators are eager to complete the task in order to cope with the work. When transcribing the verification value, there is a transcription error, which will also cause the accuracy of the water meter verification result.

  Whether the above-mentioned points can benefit everyone, if you have other ideas or opinions, please feel free to inquire online or inquire, and learn more about flowmeters at Weihai Kunke Flowmeter Co., Ltd. (www. kunkeandao.com/en), please pay more attention to the editor for more details, and the content in the next issue will be more exciting.