Abstract: Information on how to prevent various electrical interference phenomena in liquid turbine
flowmeters is provided by excellent flowmeter and flowmeter manufacturers. The liquid turbine flowmeter is a new type of intelligent instrument that integrates the turbine flow sensor and the display and calculation, which is developed by using the advanced ultra-low power consumption single-chip microcomputer technology. Anti-lightning. More flowmeter manufacturers choose models and price quotations. You are welcome to inquire. The following is the article details on how to prevent various electrical interference phenomena in liquid turbine flowmeters. The liquid turbine flowmeter is a new type of intelligent instrument that integrates the turbine flow sensor and the display and calculation, which is developed by using the advanced ultra-low power consumption single-chip microcomputer technology. Anti-lightning, low cost and other obvious advantages. During the measurement process of the liquid turbine flowmeter, when the measurement medium in it passes through the flow meter, the impeller will rotate. Through the corresponding structure, during the periodic rotation of the impeller blades, the magnetic resistance of the meter also occurs periodically. changes, so that the flow rate of the liquid turbine flowmeter and the instrument becomes a proportional voltage pulse signal, so that the flow rate and the signal are sent to the metering system of the single-chip microcomputer under the action of the low-power amplifier. After a series of calculations and corrections, the instantaneous flow and cumulative flow are effectively displayed on the display of the flowmeter. Liquid turbine flowmeter is the main type of velocity flowmeter. When the measured fluid flows through the liquid turbine flowmeter sensor, under the action of the fluid, the impeller rotates under force, and its rotational speed is proportional to the average flow velocity of the pipeline. Periodically cut the magnetic lines of force generated by the electromagnet to change the magnetic flux of the coil. According to the principle of electromagnetic induction, a pulsating potential signal, that is, an electric pulse signal, will be induced in the coil. The frequency of this electric pulsation signal is proportional to the flow rate of the fluid to be measured. . As liquid turbine flowmeters are more and more widely used in measuring the flow of viscous media, domestic and foreign“Measurement of viscous media with liquid turbine flowmeters”The research on this aspect will more and more reflect its important value and practical significance. Traditional liquid turbine flowmeters can only be used to measure the flow of low-viscosity liquids, such as water, gasoline, etc. Liquid turbine flowmeter manufacturers generally stipulate that the viscosity of the liquid to be measured should not be greater than 5MPaS, otherwise serious errors will occur. How to use the traditional turbine flow sensor to correctly measure the liquid flow with the liquid viscosity greater than 5MPaS, such as the flow of crude oil and mechanical oil, will attract our extensive attention. How to prevent various electrical interference phenomena in the liquid turbine flowmeter: 1. The liquid 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. 2. In order to ensure that the liquid passing through the turbine flowmeter is single-phase, that is, no air or vapor can enter the flowmeter, an air eliminator should be installed upstream of the turbine flowmeter if necessary. For easily vaporized liquids, a certain back pressure must be ensured downstream of the turbine flowmeter. 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. 3. 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 liquid turbine flowmeter. Therefore, the turbine flowmeter has certain requirements for the upstream and downstream straight pipe sections. 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 turbine flowmeter can reach the accuracy level at the time of calibration. Liquid turbine flowmeter is a precision flow measuring instrument, which can be used to measure the flow and total amount of liquid together with the corresponding flow totalizer. Liquid turbine flowmeters are widely used in metering and control systems in petroleum, chemical, metallurgy, scientific research and other fields. Liquid turbine flowmeters with sanitary fittings can be used in the pharmaceutical industry. 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 Prevent Various Electrical Interferences from Liquid Turbine Flow Meters'
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