Several aspects that cause the measurement error of the float flow meter to become larger

Abstract: The information on several aspects that cause the measurement error of the float flow meter to become larger is provided by the excellent flow meter and flow meter manufacturers and quotation manufacturers. The rotameter is the most popular product among the current flowmeter products, such as glass rotameter, plastic tube rotameter, traditional metal tube rotameter (Chengfeng Instrument's third-generation metal tube rotameter, using rotor mode). More flowmeter manufacturers choose models and price quotations. You are welcome to inquire. The following are the details of several aspects that cause the measurement error of the float flowmeter to increase. The rotameter is the most popular type of flowmeter products, such as glass rotameter, plastic tube rotameter, traditional metal tube rotameter (the third generation of metal tube rotameter, using the rotor mode) , all belong to the ranks of float flowmeters. Take the glass rotor as an example, because it is easy to install, easy to use, and cheap, it belongs to the bulk of sales. Flow meters have a measurement accuracy, which is often referred to as the range of measurement error. So what are the reasons for the large measurement error of the rotameter? 1. The installation does not meet the requirements. The general glass rotor flowmeter is installed vertically. The inclination angle of the flowmeter cannot exceed 20 degrees during installation. Of course, some rotameters are installed horizontally. The inclination angle is not more than 20 degrees. There must be no ferromagnetic objects in the 100mm space around the rotameter. The installation position should be far away from the valve reducing port, pump outlet, turning port of process pipeline, etc. It is necessary to maintain the requirement of 250mm straight pipe section before and after 5D. 2. The gas medium is greatly affected by temperature and pressure. The flowmeter is calibrated before leaving the factory. The flow scale is calibrated according to the temperature and density of the medium provided by the user. The gas medium is greatly affected by temperature and pressure, so it is necessary to The user provides accurate commonly used temperature values. 3. The density of the liquid medium changes greatly. Before the calibration, the meter converts the medium according to the density given by the user, and converts it into the flow rate of water in the calibration state for calibration. Therefore, if the density of the medium changes greatly, it will cause great harm to the measurement. big error. The solution is to bring the changed medium density into the formula, convert it into an error correction coefficient, and then multiply the flow measured by the flowmeter by the coefficient to convert it into the real flow. 4: Various factors such as long-term use and pipeline vibration lead to the loosening of moving parts such as the sensing magnet, pointer, counterweight, and rotating magnet of the float flowmeter, resulting in large errors. Solution: You can first verify by pushing the pointer by hand. First, press the pointer at the RP position to see if the output is 4mA and whether the flow rate is 0%, and then verify according to the scale. If discrepancies are found, the parts can be repositioned. Generally, professionals are required to adjust, otherwise the position will be lost, and it needs to be returned to the manufacturer for correction. The glass rotor flowmeter manufacturer has been dedicated to customers for more than 30 years, producing the best quality products and serving customers well. Introduce foreign advanced technology, develop and produce higher-end flowmeters, and bring more benefits to customers. , a well-known domestic brand, and the leading flowmeter manufacturer in domestic sales. The above is the whole content of this article. You are welcome to inquire about the flowmeter selection and quotation of our factory. 'Several aspects that cause the measurement error of the float flow meter to increase'

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