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The digital vortex flow meter combines field-proven sensors with core components, including spectral signal processing (SSP). Even under harsh process conditions, the YR-VF11 series of vortex flow meters maintains accuracy and stability, offering high reliability. Its robust design helps improve factory efficiency and reduce operating costs. Key features of the YR-VF11 series digital vortex flow meters: ① High precision – The measurement accuracy of these vortex flow meters is ±1% of the indicated value for liquids and gases (for pulse output), which is higher than that of orifice plate flow meters. For liquids, depending on the fluid type and its conditions, an accuracy of ±1.0% for liquids and ±1.5% for gases can be achieved. ②Adjustable measurement range: The adjustable range is defined as the ratio of the maximum value to the minimum value of the measurable range. It allows the vortex flow meter to operate during periods of large fluctuations in the values at the measurement point. ③The output is proportional to flow rate. Since the output is directly proportional to the flow rate (velocity), no square root calculation is required, whereas orifice plate flow meters necessitate such a calculation. ④No zero-point drift: Since the frequency is generated by the sensor, there is no zero-point drift. ⑤Low pressure loss: Since only a vortex generator is placed in the pipeline of the vortex flow meter, compared to flow meters with orifice plates, it causes less pressure loss in the flowing fluid. Common vortex flowmeter series: There are several domestic manufacturers of vortex flowmeters, and the quality and prices of these flowmeters vary. Generally speaking, vortex flowmeters come in various types such as general-purpose types, reduced-diameter types, separation-type types, high-pressure types, dual-sensor types, high-temperature types, low-temperature types, and corrosion-resistant types. ①General-purpose vortex flow meters come in a variety of sizes, ranging from 1/2 inch to 16 inches. Various styles such as clamped type or flanged type (ANSI 150-900) can be provided according to the customer’s requirements. ②Reduced-diameter vortex flow meter: The reduced-diameter vortex flow meter is designed specifically for measuring low flow rates, and there is no need to install a separate reduced-diameter tube. In the practical use of vortex flowmeters, it is quite common to use ones with an inner diameter smaller than that of the pipeline. It is necessary to ensure that the vortex flowmeter is installed in a suitable position within the straight sections of pipe; in other words, the length of the straight sections before and after the vortex flowmeter must be sufficient to ensure that the fluid flowing into it is distributed evenly. Concentric reducing tubes allow for a pipe diameter that is 1–2 sizes smaller, so that the flow meter and the pipe dimensions can remain consistent, thereby reducing installation costs. ③Separate-type vortex flow meter: The separate-type vortex flow meter allows the converter to be installed in an area that is far away from the process measurement point, where it is more easily visible. Separation-type vortex flowmeters are available in a variety of sizes, ranging from 1/2 inch to 16 inches. Depending on the customer’s requirements, they can be supplied in various styles such as clamp-type or flange-type (ANSI 150-900), and they also come with stainless steel enclosures. ④High-pressure vortex flow meter: The high-pressure vortex flow meter is mainly suitable for measurements in extreme operating conditions, such as high-pressure steam and water. High-pressure vortex flowmeters can be connected using ANSI 900, ANSI 1500, and ANSI 2500 flanges; they feature excellent quality and high reliability, with a pressure rating of up to 5000 pounds. ⑤Dual-sensor vortex flowmeter: When customers need the highest level of safety for personnel and processes, the dual-sensor vortex flowmeter offers a fully redundant design, available in various sizes and pressure ratings. ⑥High-temperature/low-temperature/corrosion-resistant vortex flowmeters; high-density vortex flowmeters meet the requirements of ASTM G93-6 Class B and ANSI B 40.1 Class IV standards ； High-temperature vortex flowmeters can accurately measure high-temperature steam ； Low-temperature vortex flowmeters can measure low-temperature fluids such as those at -196°C ； The corrosion-resistant type can measure corrosive fluids. Source: Changhui Instruments http://yunrun.com.cn/