The vortex flowmeter is mainly used for the flow measurement of medium fluids in industrial pipelines. It has the characteristics of convenient installation and maintenance, high cost performance, and a wide range of applications. Vortex flowmeters are used in the measurement and control of superheated steam, saturated steam, compressed air, and general gases, water, and liquids in the petroleum, chemical, metallurgical, thermal, textile, and paper industries. The volume of saturated steam and superheated steam is affected by temperature. And the pressure has a great impact. Below and Shunda flow meter to share with you on the realization of vortex flowmeter compensation method. 1, one-time compensation method First determine the operating parameters of steam - temperature and pressure, vortex flowmeter based on the working parameters to determine the density of the steam under working conditions, the density as the only density of steam in the future flow measurement process orifice plate calculation. No longer compensate for or correct the actual changes in the steam at work. This is the so-called one-time calculation method. If the operating parameters of the steam are consistent with the set values ​​during design, the accuracy of the steam flow measurement can be guaranteed. If the parameters deviate from the actual working conditions and even deviate greatly, the deviation of the measurement results may be large. The one-time compensation method, which is adopted in the early stage of automatic detection technology development, has a large measurement error and can be used as a rough measure. This design approach is still used in the current popular flow throttling device design manual. 2, online density compensation method With the application of microelectronics technology in the instrument. The vortex flowmeter's calculation function, compensation correction function, accumulation function, history data storage function, digital filter function, output function, digital communication function and the like can be easily realized. Online density compensation has been widely used as an essential basic function of steam meters. Here is the classification of steam density compensation: {1} Saturated steam line density compensation. The vortex flowmeter can realize integrated temperature and pressure compensation. There is a strict one-to-one correspondence between the temperature and pressure of saturated steam. The density of saturated steam can be a single function of its temperature or its pressure. According to the temperature value of the saturated steam or the value of the pressure value, the real-time density value can be obtained through a table look-up method or formula calculation method (IFC1967 or IAPW-1997). In flow measurement, vortex flowmeters can be selected with temperature compensated or pressure compensated flowmeters. Select a flow meter with temperature compensation. Turn on the flowmeter temperature sensor and detect the measured steam temperature in real time to obtain the corresponding density value. {2} Superheated steam online density compensation Superheated steam is a special quality steam obtained by reheating saturated steam. It breaks the strict one-to-one correspondence between the temperature and pressure inherent in saturated steam. Vortex flowmeters treat superheated steam as a single medium during flow measurement. The density of superheated steam is a combination of its temperature and pressure. When vortex flowmeters are ordered, temperature and pressure compensation should be selected. In actual use, the temperature and pressure sensors are turned on at the same time to measure the steam temperature and pressure values ​​in real time. The density values ​​can be accurately calculated based on the superheated steam density table or the density calculation formula. As a professional R&D type flowmeter manufacturer, Heshun Flowmeter manufacturers have been persisting in the production concept of “quality and brand†and “brands and development†for the past few years. They persist in making unremitting efforts to tackle difficult problems and continuously develop new technologies and products. Our customers provide products with reliable quality and conform to the demand. At the same time, we have established a long-term cooperation relationship with many production companies. All colleagues of Heshunda look forward to working with you to set sail. Authorised WABCO dealer in China. We only provide Genuine WABCO products.
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