What are the differences between a vortex flowmeter and an orifice flowmeter when measuring steam?

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What flow meter is better for measuring steam flow?

Steam flowmeter measurement can generally use vortex flowmeter, mainly for gas measurement instruments.. This flowmeter is based on the principle of Karman vortex street. When the fluid flows through a vertically inserted triangular cylindrical generator, an ordered vortex street will be generated behind it. The frequency of these vortex streets is proportional to the flow velocity of the fluid. By detecting the number of these vortex streets, the flow velocity of the fluid can be calculated, and the volumetric flow rate can be calculated based on the diameter of the pipeline. Vortex flowmeter is suitable for measuring high temperature and ultra-high temperature steam because it can withstand high temperature and high pressure environments. In addition, vortex flowmeters have the characteristics of small pressure loss, large range, reliable stability, and no direct contact with the medium. However, the density of steam varies with temperature and pressure, so when measuring steam flow, it is necessary to use a balanced rubber vortex flowmeter with temperature and pressure compensation functions to ensure accurate measurement of the actual amount of steam used. In addition to vortex flowmeters, there are also differential pressure flowmeters that can be used for measuring steam flow. However, differential pressure flow meters are gradually being phased out by users due to high pressure loss, large maintenance requirements, and low accuracy levels. In contrast, vortex flowmeters have significant advantages in measuring steam flow.

2. What are the differences between vortex flowmeter and orifice flowmeter when measuring steam?

There are man

y differences between vortex flowmeter and orifice flowmeter when measuring steam, as follows: In terms of accuracy, orifice flowmeter: strictly calculate the flow rate according to the national standard calculation formula. For scenarios with strict requirements, such as heating stations, using orifice flowmeter can better meet the accuracy requirements.. Vortex flowmeter: using a simplified calculation formula to calculate flow rate, the accuracy is slightly inferior to that of orifice flowmeter. In terms of accuracy changes: Orifice flowmeter: The inner diameter is small, and the obtuse angle of the inner wall may change after prolonged use, or dust and pollutants may increase the wall thickness, affecting the calculation formula and directly affecting the accuracy. Vortex flowmeter: Over time, there may be occasional drift in accuracy and linearity, but it can be restored through recalibration. In terms of universality: Orifice flowmeter: It requires setting multiple parameters such as pipe diameter, wall thickness, material, Reynolds coefficient, etc., which have high professional requirements and are not very universal. It is generally used in heating stations and other places. Vortex flowmeter: with good accuracy and simplified calculation formula, it has low professional requirements and is more commonly used. In terms of range ratio: Orifice flowmeter: The range ratio is 1:3. Vortex flowmeter: The high range ratio can reach 1:15, and the measurable flow range is wider. In terms of pressure loss: Orifice flowmeter: It belongs to the nuclear flow device and has a higher pressure loss than vortex flowmeter. Vortex flowmeter: relatively small pressure loss. In terms of maintenance costs: Orifice flowmeter: comp

What are the differences between a vortex flowmeter and an orifice flowmeter when measuring steam?

What flow meter is better for measuring steam flow?

2. What are the differences between vortex flowmeter and orifice flowmeter when measuring steam?

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