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1. Price of open channel Doppler flowmeter
2. What is the required diameter flowmeter for 400 standard cubic meters per hour of nitrogen?
For conveying 400 standard cubic meters per hour of nitrogen, it is recommended to use a DN80 pipeline with a vortex flowmeter. 1. According to the economic flow rate of industrial gases (10-30 m/s), the recommended pipe diameter for a flow rate of 400 Nm ³/h is as follows: * Flow rate of 10 m/s: pipe diameter ≈ 119 mm, corresponding to DN125 pipeline * Flow rate of 20 m/s: pipe diameter ≈ 84 mm, corresponding to DN80 pipeline (preferred recommendation) * Flow rate of 30 m/s: pipe diameter ≈ 69 mm, corresponding to DN65 pipeline. DN80 pipeline achieves a good balance between flow rate (about 20m/s) and pressure loss, and is a commonly used choice for this flow rate.
2. Flow meter selection for DN80 The main types and characteristics of flow meters applicable to pipelines are as follows: | Flow meter types | Characteristics | Applicability | |: --- |: --- | | Vortex flow meters | Simple structure, easy installation and maintenance, high accuracy, low pressure loss | Preferred recommendation, very suitable | Gas turbine flow meters | High accuracy, good repeatability, but high requirements for high dielectric quality and cleanliness, expensive | Suitable but high cost | Orifice flow meters | High reliability, wide application, but high pressure loss, relatively low accuracy | Available but not the most preferred | 3 Before finalizing the key selection parameters, the following operating parameters must be
3. What are the measurement ranges of vortex flowmeters?
1、 Vortex flowmeter is a flowmeter based on the Karman vortex principle for measurement. It can measure liquids and gases, and is also very economical. The diameter is generally DN10-- DN1000. With temperature and pressure compensation, it can accurately measure gas or steam flow, and has a wide range of applications;
2、 Vortex flowmeter can only measure volumetric flow rate, usually in m3/h (cubic meters per hour), with instantaneous flow display and cumulative flow display;
3、 The measurement range corresponding to electromagnetic flow meters of different diameters is: liquid measurement: (unit: m3/h): DN15
1.2-6; DN20
1.5---10； DN25：2---16； DN32
1.8---20； DN40：2.5---25； DN50：3.5---40； DN65：7.5---70； DN80：12---130； DN100：18---160； ..... Gas measurement: (unit: m3/h): DN15:4--28; DN20：6---40； DN25：8---50； DN32：15---150； DN40：18---180； DN50：25---480； DN65：50---500； DN80：80---800； DN100：120---1200； ..... For more detailed information, please refer to the technical article on the website of Shandong Qiangqiang Automation Technology Co., Ltd.... www.qszdh.com
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