How to select a vortex flowmeter

How to select a vortex flowmeter is a problem that customers often face when purchasing. Unlike the common daily necessities in daily life, as a kind of industrial instrumentation, many customers don't know the vortex flowmeter very well, so how to choose the model and which parameters need to be confirmed are also very troublesome. At present, there are countless domestic manufacturers of vortex flowmeters, and the technical strength of each manufacturer is also different. It is very important to choose a manufacturer with technical strength. A good selection engineer can help you choose a model that is more suitable for your working conditions and is more durable. The following editor will list the main parameters to be confirmed in the selection to facilitate everyone's purchase.　　The selection of vortex flowmeter mainly confirms the following parameter requirements: 　　1, measuring medium. Turbine flowmeter is a kind of velocity flowmeter. It uses the principle of Karman vortex street. When the medium passes through the vortex generator, it will form a small vortex in the back. Through the number of vortex, it can be converted into medium. The flow rate is then converted to the flow rate of the medium. Its principle determines the type of its measuring medium, which can be liquid, gas or steam. At present, most industrial occasions, such as nitrogen, compressed air, steam, heat transfer oil, etc., are mostly measured by vortex flowmeters.　　2, pipe diameter. According to different installation methods, vortex flowmeters can be divided into pipeline type and plug-in type installation. For the pipeline type, the pipe diameter is the same as most other flow meters, the smallest is DN15, and the largest, it can reach DN300. If you need a larger diameter, you can choose the plug-in installation, the normal diameter range can reach DN2000, and the diameter above DN2000 can be supplied according to the agreement.　　 3. Measurement accuracy. The accuracy of the vortex flowmeter also has several grades, and it is divided according to the measuring medium. The pipeline type vortex flowmeter, if it is measuring liquid, the measurement accuracy can reach 1.0 level, and for gas measurement, the accuracy can reach 1.5 level. If it is a plug-in vortex flowmeter, the accuracy can reach 1.5 and 2.5.　　 4. Medium temperature. Generally speaking, it is divided into three ranges, divided into normal temperature, medium temperature and high temperature. The temperature ranges are -40～100℃ (normal temperature), 100～250℃ (medium temperature), and 100～320℃ (high temperature). If the temperature of the on-site medium is higher, such as some superheated steam, it can be measured with an orifice flowmeter.　　 5. Nominal pressure. Mainly divided according to the installation method, the main requirements on the market are as follows, such as flange mounting type (2.5MPa), flange connection type (1.0/1.6/2.5MPa), plug-in installation type (1.6MPa/2.5MPa) /4.0MPa).　　 6. Power supply. According to the current market demand, there are mainly +12VDC (three-wire pulse output), +24VDC (three-wire pulse output type and two-wire current output type) 3.6V lithium battery, dual power supply.　　7. Output signal. According to the current market demand, there are mainly voltage frequency pulse output, two-wire 4-20mA output and HART output. In addition, some occasions may require digital output, and we can also provide modbus RS485 communication.　　 In general, the above 7 parameters basically contain what needs to be confirmed for the vortex flowmeter selection. When you get the purchase requirements, don’t rush to find the manufacturer to inquire about the price. As the saying goes, sharpening the knife and not cutting wood by mistake, we first confirm the above-mentioned parameters, and the parameters are confirmed, the manufacturer Naturally, I can recommend you the most suitable vortex flowmeter for your on-site working conditions.

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