How to give full play to the technical characteristics of the turbine flow meter

Abstract: Information on how to give full play to the technical characteristics of turbine flowmeters is provided by excellent flowmeter and flowmeter manufacturers and quotation manufacturers. Abstract: Turbine flowmeter is the main type of velocity flowmeter. It uses a multi-blade rotor (turbine) to sense the average flow velocity of the fluid, and derives the flow or total amount of the meter. Generally, it consists of two parts: sensor and display instrument, and can also be done. For more flowmeter manufacturers to select models and price quotations, you are welcome to inquire. The following is the article details on how to give full play to the technical characteristics of turbine flowmeters. Turbine flowmeter is the main type of velocity flowmeter. It uses a multi-blade rotor (turbine) to sense the average flow rate of the fluid, and derives the flow or total amount of the meter. Generally, it is composed of two parts, a sensor and a display instrument, and it can also be made into an integral type. Turbine flowmeters, positive displacement flowmeters, and Coriolis mass flowmeters are known as the three types of flowmeters with the best repeatability and accuracy. As one of the ten types of flowmeters, their products have developed into a variety of Scale for serial mass production. In order to give full play to the characteristics of the turbine flowmeter, full attention must be paid to the installation and use of the flowmeter. This article gives you a detailed discussion of a few points to note for your reference. The accuracy of the turbine flowmeter is about 0.5-0.1%. In the linear flow range, even if the flow changes, the accumulative flow accuracy will not be degraded. And in a short time, the reproducibility of the turbine flowmeter can reach 0.05%; the turndown ratio of the turbine flowmeter can reach 8—10. Under the same caliber, the maximum flow value of the turbine flowmeter is larger than that of many other flowmeters; the turbine flowmeter can be made into a closed structure, and its rotational speed signal is non-contact measurement, so it is easy to achieve high-pressure design; if the turbine and bearings of the flowmeter are selected to withstand high pressure Materials with high temperature and small thermal expansion coefficient can be used in a wide temperature range; the output of the turbine flowmeter is a pulse digital signal proportional to the flow rate. It has the advantages of not reducing the accuracy during the transmission process, easy to accumulate, and easy to send into the computer system; in order to give full play to the characteristics of the turbine flowmeter, full attention must be paid to the installation and use of the flowmeter. In order to ensure that the display instrument has sufficient sensitivity to the pulse signal output by the turbine sensor, it is necessary to improve the signal-to-noise ratio. For this reason, various electrical interference phenomena, namely electromagnetic induction, electrostatic and capacitive coupling, should be prevented during installation. ①The uneven distribution of flow velocity and the existence of secondary flow in the pipe are important factors that affect the measurement accuracy of the turbine flowmeter. Therefore, the turbine flowmeter has a certain effect on the upstream and downstream straight pipe sections.—set requirements. For industrial measurement, a straight pipe length of 20D upstream and 5D downstream is generally required. To eliminate secondary flow, it is best to install a rectifier at the upstream end. If the upstream end can be guaranteed to have a straight pipe section of about 20D, and a rectifier is installed, the measurement accuracy of the flowmeter can reach the accuracy level at the time of calibration. ②The turbine flowmeter has high requirements on the cleanliness of the fluid, and a filter must be installed before the flowmeter to ensure the cleanliness of the fluid. The filter can be a funnel type, and its own cleanliness can be obtained by measuring the change of the differential pressure at both ends. ③ In order to ensure that the liquid passing through the flowmeter is single-phase, that is, no air or vapor can enter the flowmeter, an air eliminator should be installed upstream of the flowmeter if necessary. For easily vaporized liquids, a certain back pressure must be ensured downstream of the flow meter. The size of the back pressure can be twice the pressure drop of the flow sensor at the maximum flow rate plus 1.2 times the vapor pressure of the liquid to be measured at the maximum temperature. 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 give full play to the technical characteristics of turbine flowmeter'

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