Classic Venturi Notes

Abstract: Classic Venturi precautions information is provided to you by excellent flowmeter and flowmeter manufacturers. Precautions for the use of Venturi tube flowmeters: 1. The selection of flow meters is extremely important. Whether the selection is correct or not is directly related to the measurement accuracy. Therefore, we need to understand the relevant knowledge of the product and make the correct selection, installation and use. 2. Check at any time: new table or deactivated. More flowmeter manufacturers choose models and price quotations. You are welcome to inquire. The following is the details of the classic Venturi notes. Precautions for the use of Venturi tube flowmeters: 1. The selection of flow meters is extremely important. Whether the selection is correct or not is directly related to the measurement accuracy. Therefore, we need to understand the relevant knowledge of the product and make the correct selection, installation and use. 2. Check at any time: For a new watch or a classic Venturi that has been reactivated after being out of use for a period of time, the pressure-inducing pipeline should be checked for blockage or leakage before it is put into use. (1) The liquid medium should be filled and cleaned in the pressure-inducing pipeline. (2) Pay attention to the gas mixed in the discharge pipeline, and pay attention to the accumulation of liquid in the discharge pipeline for the gas medium. (3) Open before putting into operation“Three valve block”The balance valve in the middle, close the valve on the positive and negative pressure pipeline, check and correct the zero point of the differential pressure transmitter, be sure to pay attention“zero”It is to check and adjust the differential pressure transmitter when the positive and negative pressure chambers are completely equal pressure (that is, the differential pressure is equal to 0). (4) Even fully open when the fluid is flowing“Balance valve”, as long as the pressure-taking valve on the positive and negative pressure-taking pipeline is not closed, the zero point cannot be checked. Because the balance valve itself has resistance, it cannot completely balance the pressure of the positive and negative pressure chambers, that is, it cannot reach the“zero differential pressure”state. (5) When measuring the flow of dirty fluid, be sure to configure a settler or isolator. Pay attention to how to reasonably select the position of the inlet, outlet and sewage outlet of the pressure guiding fluid to achieve the purpose of sewage discharge. When measuring the flow rate of corrosive fluids, it is necessary to select a suitable isolator, select a suitable isolation liquid according to the specific gravity of the medium, and pay attention to the reasonable selection of the isolation liquid and the inlet of the fluid to be measured. Whether the design parameters of the classic Venturi are consistent with the actual parameters is directly related to the measurement accuracy. When the classic Venturi is put into use, if the measured parameters are within the range of the design parameters, the measurement accuracy will generally not exceed the design calculation accuracy; but if the measured parameters are far from the design parameter range (assuming the classic Venturi and differential pressure transmitter Selection, manufacturing, and installation all meet the requirements), it may be that the provided design parameters are wrong, the design parameters should be changed, and the classic Venturi should be redesigned and calculated. The above is the whole content of this article. You are welcome to inquire about the flowmeter selection and quotation of our factory. 'Classic Venturi Notes'

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