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1. The difference between turbine flowmeter and vortex flowmeter
1. The design principles of turbine flowmeter and vortex flowmeter are different. Turbine flowmeter is mainly used for measuring liquids, and it is a velocity flowmeter. Its working principle is based on the relationship between the rotational angular velocity and flow velocity of the impeller in the fluid, and the flow rate of the liquid is determined by measuring the rotational speed of the impeller. The vortex flowmeter is manufactured based on the Karman vortex principle, which calculates the flow rate by measuring the vortex frequency generated by the fluid passing through a specific device in the pipeline. This frequency is related to the flow velocity and device characteristics. The application scope of the two flowmeters is also different. Vortex flowmeters are widely used in industrial applications to measure the flow of various media such as gases and liquids. Turbine flowmeters are suitable for flow measurement of various media such as petroleum, organic liquids, inorganic liquids, liquefied gas, and natural gas, as well as applications in special situations such as high temperature, high pressure, and low temperature conditions. The characteristics of turbine flowmeters and vortex street flowmeters are different. Turbine flow meters are favored for their simple structure, few components, light weight, easy maintenance, strong flow capacity (larger flow rate under the same diameter), and high parameter adaptability (such as high temperature, high pressure, and low temperature). The vortex flowmeter is known for its extremely small pressure loss, large range, high precision, and the advantage of being almost unaffected by parameters suc
2. What are the recommended manufacturers for flow meters?
3. Detailed explanation of the usage steps for vortex flowmeters.
The standard usage process for Kaifeng Hexin vortex flowmeters (taking the mainstream LUGB series as an example) is divided into four core steps: installation and calibration, on-site use, daily operation and maintenance, and troubleshooting. It is necessary to strictly follow the accompanying factory instructions and JB/T 9248-2015 "Vortex Flowmeters" industry standard..
1. Verification and preparation before installation (1) Appearance and accessory inspection 1 Check the nameplate parameters of the flowmeter body: confirm that the nominal diameter, nominal pressure, medium temperature range, output signal type match the on-site working conditions. The nameplate of Kaifeng Hexin will indicate the factory number and calibration date, and the calibration certificate needs to be retained. 2. Check that the sensor body is not bumped, the wiring terminals are not loose, the matching PTFE/metal sealing gasket is not deformed or damaged, and the signal cable meets the on-site explosion-proof/protection level requirements. The conventional model protection level of this brand is IP65, and the explosion-proof type is Exd II BT4. 3. Confirm that the preamplifier installation position of the split flowmeter is far away from strong electromagnetic interference sources such as frequency co