Explanation of the reasons for inaccurate measurements in turbine flowmeters

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　　Our factory’s technicians explain that flow meters are instruments that we definitely use in many industrial processes, among which turbine flow meters are particularly widely used. However, errors can occasionally occur when using turbine flow meters, and such errors are not random occurrences; they are rather caused by certain operational issues and environmental factors. Let’s take a look at this topic together. 　　The decrease in accuracy of turbine flowmeters during use can be attributed to the following reasons: 1. The medium usually contains some impurities, which cause wear on the bearings and shafts, leading to an increase in the gap between them. This disrupts the dynamic balance of the moving parts, resulting in a decrease in rotational speed. Additionally, dirt that enters this gap increases the mechanical resistance, further reducing the rotational speed. All these reasons result in a decrease in the instrument readings, leading to negative errors, which is disadvantageous for the fluid supplier. 　　2. Changes in fluid temperature and pressure can cause the air contained within the liquid in the pipeline to escape; or, if the pressure inside the pipeline is lower than the saturated vapor pressure of the fluid, part of the liquid may turn into vapor. Additionally, negative pressure in the system can draw external gases into the pipeline, and these gases, along with the liquid being measured, can cause the instrument readings to increase, resulting in a positive error that is detrimental to those who rely on that fluid. 　　3. Fibrous or viscous impurities in the fluid adhere to the rotating parts of the flow meter, increasing the rotational resistance and resulting in a decrease in the instrument’s reading, leading to negative errors – which is detrimental to the fluid supplier. 　　4. The working environment can be quite harsh, with factors such as electromagnetic interference, dust, high temperatures, vibrations, and humidity. These conditions may cause the turbine flow sensor to malfunction or fail, leading to errors in the readings provided by the turbine flow meter. The error can be positive or negative; it may not be noticeable, or it may result in complete failure of the device. Regarding the aforementioned phenomenon, when it is severe, issues can be identified by comparing the working status of the processes, making it easier to take appropriate measures. However, in the early stages of the problem, no special measures can be taken to detect it. 　　Flow metering is one of the components of measurement science and technology, and it is closely related to the national economy, national defense construction, and scientific research. Doing this job well plays an important role in ensuring product quality, improving production efficiency, and promoting the development of science and technology. Especially in today’s era of energy crises and an increasing degree of automation in industrial production, the significance and role of flow meters in the national economy have become even more evident.