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What is the maximum flow rate of a DN65 vortex flowmeter under a pressure difference of 1.5 kilograms?
The DN65 curved vortex flowmeter, if it is a liquid, has a flow range of 6-60m3/h; If it is gas, the flow range is 30-400m3/h for Xunzhan. Welcome to discuss
2. What is the required diameter flow meter for 400 standard cubic meters of nitrogen per hour?
For transporting 400 standard cubic meters of nitrogen per hour, it is recommended to use a DN80 pipeline with a vortex flow meter. 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
3. What should I pay attention to when selecting a liquid flowmeter?
Liquid flow meters are used for measuring liquid flow rates. Commonly used liquid flow meters include electromagnetic flow meters, turbine flow meters, ultrasonic flow meters, V-cone flow meters, etc. For most operating conditions in the market, electromagnetic flow meters and turbine flow meters can meet various flow measurement needs. Below, electromagnetic flow meters will be selected.. For large-diameter flow measurement, when the diameter is generally ≥ 500MM, it is recommended to use a split type for maintenance convenience. When the instrument is installed below the ground, a split type IP68 structure must be selected. When the instrument inevitably needs to be installed at the pump outlet, a split type structure instrument should be selected. Key points for selecting liquid flow meters:
1. Installation form: There are usually three installation methods: flange type, clamp type, and insert type. The selection of installation method depends on the actual working conditions on site, and these three installation methods will not be affected by the current working conditions.
2、 Nominal diameter: Commonly used diameters include DN
10, DN1
5, DN3
2, DN40, DN50, DN
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