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1. What are the models and specifications of Emerson flow meters? Emerson flow meters are mainly divided into three product lines, covering different measurement principles and application scenarios. The following is a detailed classification of its core model specifications: 1. Daniel brand ultrasonic flowmeter • Technical principle: using four channel time difference method technology • Measurement range: caliber coverage DN200-DN6000 • Measurement accuracy: up to ± 0.5% • Corrosion resistance: equipped with silicon nitride ceramic transducer, capable of withstanding high temperatures and highly corrosive media up to 400 ℃ • Data function: supports remote configuration, can store 10 years of historical data • Typical applications: trade measurement scenarios such as petrochemicals, LNG receiving stations, and high-temperature steam pipelines. 2 Rosemount series flow meters • Technical types: covering multiple principles such as electromagnetic, vortex, ultrasonic, etc. • Core features: high precision, fast response, built-in intelligent diagnostic function • Compatibility: supporting industrial Internet of Things (IIoT) integration • Application areas: Shi Shi disguised as blind oil, chemical, power and other tedious industrial environments. 3 8800D series vortex flowmeter • Technical type: belonging to the Rosemount series vortex flowmeter • Measurement accuracy: up to ± 0.65% • Anti interference capability: excellent anti vibration performance • Medium adaptability: specially used for high-temperature and high-pressure steam and gas measurement • Application scenarios: harsh working conditions such as petroleum, chemical, and power. Emerson flowmeter selection needs to be matched according to specific medium char_600x400.jpg)
2. Flow range of vortex flowmeter
The flow range of vortex flowmeter is mainly determined by the sensor diameter and fluid properties. The larger the diameter, the wider the measurable flow range.
. The conventional liquid measurement range is between 0.5m/s and 7m/s flow rate, and the gas measurement range is between 5m/s and 60m/s. 1. Correspondence between caliber and flow rate (under normal temperature water conditions) The flow range is directly related to the instrument caliber, and the following are typical parameters (referring to the product manuals of mainstream domestic manufacturers such as Chuanyi and Ganges in 2023): • DN15: minimum about 1.2 m ³/h, maximum about 15 m ³/h • DN25: minimum about 3 m ³/h, maximum about 40 m ³/h • DN50: minimum about 10 m ³/h, maximum about 150 m ³/h • DN100: minimum about 40 m ³/h, maximum about 650 m ³/h • DN200: minimum about 150 m ³/h, maximum about 2500 m ³/h • DN300: minimum about 300 m ³/h, maximum about 5500 m ³/h. 2. Influence of fluid medium • Liquid measurement (Water, oil, etc.): The flow rate range is usually 0.5-7 m/s, and liquids with viscosity higher than 30cP will significantly increase the measurement lower limit. Gas measurement (air search, steam, etc.): The flow rate range is usually 5-60 m/s, and low-pressure gases may have an increased lower limit flow rate due to low density. • Steam measurement: It is necessary to distinguish between saturated steam and superheated steam, and the flow range should be calculated based on temperature and pressure compensation to determine the actual m
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