How to Improve the Measurement Accuracy of V Cone Flow Meter

Abstract: The information on how to improve the measurement accuracy of the V-cone flowmeter is provided by the excellent flowmeter and flowmeter manufacturers. When the V-cone flowmeter is measured on site, the measurement results are often subject to large errors due to some objective factors. The following will mainly introduce the main measures to ensure the measurement accuracy of the V-cone flowmeter: 1. Table calibration. Everyone knows it. More flowmeter manufacturers choose models and price quotations. You are welcome to inquire. The following is the article details on how to improve the measurement accuracy of V-cone flowmeters. When the V-cone flowmeter is measured on site, the error of the measurement results is often caused by some objective factors. The following will mainly introduce the main measures to ensure the measurement accuracy of the V-cone flowmeter: 1. Table calibration. As we all know, the standard V-cone can be used directly as long as the design and manufacture refer to the relevant standards, and no real flow calibration is required. Because the outflow coefficient can be calculated directly by the software, the computer calculation is ideal after all, and it is still different from the on-site environment. Therefore, in order to ensure the measurement accuracy, it is recommended to perform real flow calibration for each flowmeter, and the calibrated outflow The coefficients are compared with the calculation results, and the difference is calculated and corrected. 2, Reynolds number correction, there is a definite relationship between the flow coefficient of the V-cone flowmeter and the Reynolds number. When the mass flow changes, the Reynolds number changes proportionally, thus causing the flow coefficient to change. 3. The influence of temperature on the V-cone flowmeter and its correction. The change of fluid temperature causes the change of density, which leads to the change of the relationship between differential pressure and flow rate. The correction of temperature change is to use a temperature instrument to measure the on-site temperature and then input it into the secondary instrument to correct the error caused by the temperature change. 4. Swellability correction. When the V-cone flowmeter measures the flow of steam and gas, the expansion of the fluid must be corrected. For the specific correction coefficient, please refer to the design manual of the throttling device. 5. Calculation of steam mass flow, when V-cone flowmeter measures steam, the flow value is obtained from the differential pressure signal first, and then the density is obtained from the steam temperature and pressure value by looking up the table to calculate the steam flow quality. In fact, the V-cone flowmeter is widely used by us to find the flow, and it is also the representative of the differential pressure flowmeter. You can promote it to other differential pressure flowmeters through appropriate inferences. The above is the whole content of this article. You are welcome to inquire about the flowmeter selection and quotation of our factory. 'How to Improve the Measurement Accuracy of the V Cone Flow Meter'

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