What are the differences between vortex flowmeter and orifice flowmeter in measuring steam? The senior staff of Qingtian Instrument is ..

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Why cant orifice flow meters measure small-diameter flow? The orifice flowmeter cannot measure small-diameter flow mainly due to its design limitations and physical characteristics. Orifice flowmeter is a differential pressure flowmeter, which works based on the pressure difference generated when the fluid flows through the orifice plate to measure the flow rate. Although orifice flow meters have the advantages of simple structure, firmness, stable and reliable performance, long service life, and low price, and can be put into use without actual flow calibration, there are limitations in their application in small-diameter working conditions. Specifically, the disadvantages of orifice flow meters include: 1. Low measurement accuracy: This means that orifice flow meters may not provide sufficiently accurate measurement results in small-diameter measurements. 2. Narrow range: Due to the square relationship between differential pressure signals and flow rates, the general range of orifice flow meters is only 3:1~4:1, which is known to be a limitation when accurate measurement of small flow rates is needed. The adjusted components increase the difficulty of maintenance and supervision management Frequent disassembly for cleaning and testing is required: Due to the need to frequently disassemble the orifice plate flow slide gauge for cleaning and testing, this increases the workload and cost of maintenance. Therefore, although orifice flow meters perform well in many applications, other types of flow meters may need to be considered for small-diameter flow measurement due to their aforementioned drawbacks.

2. What is the accuracy of measuring flow rate with a flowmeter orifice plate? Do you know?

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

? The senior staff of Qingtian Instrument is The main differences between vortex flowmeter and orifice flowmeter in measuring steam are reflected in seven aspects: accuracy, accuracy variation, universality, range ratio, pressure loss, maintenance cost, and service life. Specifically, accuracy: The orifice flowmeter strictly calculates the flow rate according to the national standard calculation formula. In demanding scenarios such as heating stations, it can provide more reliable measurement results and is suitable for steam measurement occasions with extremely high accuracy requirements. The vortex flowmeter uses a simplified formula to calculate flow rate, with slightly lower accuracy compared to orifice flowmeters, but it can still meet the requirements in general industrial scenarios. Accuracy variation accompanied by flushing and leakage: The orifice flowmeter has a smaller inner diameter, and the obtuse angle of the inner wall may change after long-term use, or the wall thickness may increase due to the accumulation of dust and pollutants, directly affecting the accuracy of the calculation formula and leading to a decrease in accuracy. The accuracy and linearity of the vortex flowmeter may drift after long-term use, but its performance can be restored through recalibration, making maintenance more flexible. Universality: Orifice flow meters require parameters such as pipe diameter, wall thickness, ma

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