Why choose temperature and pressure compensation for measuring steam flow?

Abstract: Why choose temperature and pressure compensation for measuring steam flow? Information is provided by excellent flowmeter and flowmeter manufacturers and quotation manufacturers. Why choose temperature and pressure compensation to measure steam flow? Many users are not sure whether to perform temperature and pressure compensation when installing flowmeters in steam pipelines to detect steam flow. The following are some experiences summed up by our company's technicians based on on-site applications. More flowmeter manufacturers choose models and price quotations. You are welcome to inquire. The following is why temperature and pressure compensation should be selected for measuring steam flow? The article details. Why choose temperature and pressure compensation to measure steam flow? Many users are not sure whether to perform temperature and pressure compensation when installing flowmeters in steam pipelines to detect steam flow. The following are some experiences summed up by our company's technicians based on on-site applications for you to share. When the temperature and pressure of the steam changes, the density of the steam changes, causing measurement errors in the steam flowmeter. In order to reduce the error, the temperature and pressure compensation method can be adopted to reduce the measurement error. The essence of the so-called temperature and pressure compensation is the steam density correction measures taken when the temperature and pressure of the measured steam do not match the values ​​used in the design. Density correction measures can be performed manually or automatically by instrumentation or DCS. Now take the steam flow measurement with an orifice plate as an example to illustrate: when the actual parameters (temperature, pressure) of the measured steam flow are inconsistent with the designed parameters, the flow coefficientα, beam expansion coefficient ε, aperture d and other values ​​will change. However, when the temperature and pressure fluctuations of the steam are not large, that is, when the working conditions parameters do not deviate too much from the design parameters, and the impact on the measurement is small, the ideal measurement accuracy can be achieved only by adopting temperature and pressure compensation measures. However, when the working condition parameters deviate too much from the design value, or the working condition parameters fluctuate frequently and are too large, even with temperature and pressure compensation measures, it is still difficult to meet the measurement accuracy requirements. At this time, for a specific orifice plate, only Recalculate the relationship between differential pressure and flow. The temperature of saturated steam is a single-valued function of pressure, so the temperature and pressure compensation of density can be reduced to pressure compensation. The superheated steam is a single-phase flow when it flows in the pipeline. The density of the superheated steam is determined by the temperature and pressure of the steam. The temperature and pressure of the superheated steam are a variable, so the temperature and pressure must be compensated. Maybe you are also interested in our company's flow meters. The above is the whole content of this article. You are welcome to inquire about the flowmeter selection and quotation of our factory. 'Why choose temperature and pressure compensation for measuring steam flow?'

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