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Metal tube rotor flowmeter verification measurement accuracy principle introduction

When selecting a metal tube rotameter, first of all, we must understand the product standards implemented by the metal tube rotameter manufacturer, especially the accuracy regulations and the display scale. The second is to understand the manufacturing and technical level of the product. At the same time, it is necessary to combine the process requirements in flow measurement, especially in the case of high precision of measurement or control, intuitive scale display, and high viscosity of medium. It is necessary to select the medium flow directly, with density and viscosity compensation performance. Metal tube rotameter. Because the conversion and calibration of the scale is done according to the media conditions. Use the appropriate measuring part material.
Generally, it is necessary to select a measuring material with good corrosion resistance. Only when the float and measuring parts are protected from the corrosion of the medium for a long time can the precision requirements of the long-term operation of the product at the factory be ensured. The normal working flow is lower than the 50% range, which increases the absolute error at the measuring point, which is not conducive to the control accuracy.
This is especially important for manufacturing companies with density and viscosity correction capabilities. Because the difference in density or viscosity will directly affect the calibration of the flow scale. For flowmeters that directly display water or air flow scales under calibration conditions, manufacturers may be required to provide calibration data as well as flowmeter certificates. When actually using the instrument, the density should be manually calculated based on these calibration data and calculations. Corrected. For metal tube rotor flowmeters that require control, try to use products with communication functions. When the medium conditions change, you can use the communication function of the product to adjust the signal on site to ensure the accuracy of the product to the utmost. Conditional users can re-inspect the meter according to the flow calculation book and calibration record provided by the flowmeter manufacturer.

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