Vortex flowmeter factory | Calculation formula for frequency and flow rate of vortex flowmeter?

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1. What is the accuracy level standard for micro threaded vortex flowmeters?

The accuracy level standard for micro threaded vortex flowmeters is divided into two categories: international standards and domestic standards. The core is to define the accuracy level by the maximum allowable error.

The international standard ISO 4185 divides accuracy levels into 0.5, 1, 1.5, 2, and 2.5, with corresponding maximum allowable errors of ± 0.5%, ± 1.0%, ± 1.5%, ± 2.0%, and ± 2.5%. ISO 6817 standard: Accuracy levels are divided into 0.2, 0.5, 1, and 1.5 levels, with corresponding maximum allowable errors of ± 0.2%, ± 0.5%, ± 1.0%, and ± 1.5%, respectively.

2. According to the current domestic standard GB/T 2624-2019, the accuracy level and corresponding maximum allowable error of micro thread vortex flowmeter are: | Accuracy level | Maximum allowable error | | ---- | | | | 0.5 level | ± 0.5% | 1 level | ± 1.0% | | 1.5 level | ± 1.5% | 2 level | ± 2.0% | 2.5 level | ± 2.5% | The higher the accuracy level, the stronger the accuracy of the measurement results. When selecting, it is necessary to comprehensively judge based on actual measurement needs, range, and other factors.

2. Advantages and disadvantages of vortex flowmeter

The advantages of vortex flowmeter include reliable structure, wide measurement range, high accuracy, and low maintenance;

; Disadvantages include the need for density conversion, susceptibility to vibration induced pulley disturbances, and high requirements for flow field uniformity. The specific analysis is as follows: the advantages are that there are no movable parts, the structure is simple and reliable: the vortex flowmeter has no movable parts, and the measuring Vortex flowmeter factory

element has a simple sliding layout, which makes its function reliable, has a long service life, and reduces maintenance needs caused by component wear or failure. Volume flow rate is not affected by thermal parameters: The volume flow rate measured by a vortex flowmeter is not affected by thermal parameters such as temperature, pressure, density, or viscosity of the measured fluid. This means that under different operating conditions, its volume flow rate measurement results are relatively stable and usually do not require separate calibration, simplifying the usage process. Wide range of measuring media: It can measure the flow rate of liquids, gases, or vapors, with a wide range of applications, and can meet the needs of various industrial production scenarios. Small pressure loss: During the measurement process, the pressure loss generated by the vortex flowmeter is small, which helps to reduce interference with the fluid system and lower energy consumption. High accuracy and good repeatability: Vortex flow meters have the advantage of high accuracy, with a repeatability of 0.5%, which can provide relatively accurate flow measurement data, and the consistency of multiple measurement results is good. Small maintenance requirement: Due to its simple and reliable structure, the vortex flowmeter requires less maintenance in daily use, reducing the cost of use. Disadvantage: Flow conversion is required: The volumetric flow rate of the vortex flowmeter in operation is not affected by thermal parameters such as temperature, pressure, and density of the measured fluid, but the final measurement result of liquid or steam should be mass flow rate. For gas, the final measurement result should be standard volumetric flow rate.

Vortex flowmeter factory | Calculation formula for frequency and flow rate of vortex flowmeter?

1. What is the accuracy level standard for micro threaded vortex flowmeters?

2. Advantages and disadvantages of vortex flowmeter

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