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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
2. How to choose a vortex flowmeter under pressure conditions
The core parameters for choosing a vortex flowmeter under pressure conditions are that the pressure resistance level must be ≥ 1.5 times the working pressure, and the 316L stainless steel shell is preferred when the medium temperature is ≤ 350 ℃.
. 1. Selection of pressure resistance parameters - nominal pressure resistance level ≥ 1.6 times the maximum working pressure of the system (GB/T12264-2022 standard) - pressure resistance range of conventional industrial vortex street flow meters: PN10~PN420 (1~42MPa) - ultra-high pressure models need to be specially customized, up to PN630 (63MPa). 2. Structural material requirements • Shell material: carbon steel (≤ 2.5MPa), 304 stainless steel (≤ 4.0MPa), 316L stainless steel (≥ 4.0MPa or corrosive medium) • Vortex rough stroke generator: must be made of solid processed hard alloy (such as WC Co) • Sealing form: metal wound gasket (≤ 350 ℃) or graphite gasket (>350 ℃). 3 Key performance indicators | Parameters | Requirements for conventional working conditions | Requirements for pressurized working conditions | | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------1. Vortex flowmeter models cover different media and flow scenarios, including FS series for industrial gas measurement and micro vortex flowmeter for small flow detection
2 Ultrasonic flow meters are suitable for pipeline flow detection, with a dia
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