How to ensure the sensitivity of the turbine flow meter sensor

Abstract: The information on how to ensure the sensitivity of the turbine flowmeter sensor is provided by the excellent flowmeter and flowmeter manufacturers. 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. 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. More flowmeter manufacturers choose models and price quotations. You are welcome to inquire. The following is the details of how to ensure the sensitivity of the turbine flowmeter sensor. 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. 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. For this reason, various electrical interference phenomena, such as electromagnetic induction, electrostatic and capacitive coupling, should be prevented during installation. ① The 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. ② Turbine flowmeters have high requirements on the cleanliness of the fluid. 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 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. In order to eliminate the secondary flow, it is best to install a rectifier at the upstream end. If the upstream end can ensure a straight pipe section of about 20D, and add a rectifier, the measurement accuracy of the flowmeter can reach the accuracy level of the calibration. In addition, the turbine flowmeter can be calibrated with real flow for hydraulic oil, oil and small diameter specifications with high viscosity. 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 Ensure the Sensitivity of Turbine Flow Meter Sensors'

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