crude oil flow meter DN200

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# Guide to Selecting a Seawater Flow Meter for Your Desalination Plant ## Quick Answer For seawater desalination, you need a flow meter that handles high salinity, biofouling, and corrosion. A magnetic flow meter with PTFE or ceramic lining works best for reverse osmosis feed water. Coriolis flow meters are the top choice for chemical dosing accuracy. Avoid turbine meters and vortex meters in seawater service. --- ## Project Background I am the marketing manager at Silver Automation Instruments (flow-meter.com.au). We manufacture industrial flow meters and process instruments. Our core products include Coriolis mass flow meters, electromagnetic flow meters, ultrasonic flow meters, vortex flow meters, oval gear flow meters, thermal mass flow meters, pressure transmitters, and paperless recorders. Our customers are industrial end users and distributors in Southeast Asia, Oceania, Latin America, Africa, and the Middle East. These are mostly SMEs with 10–100 employees. They work in oil and gas, water and wastewater, chemical, food and beverage, and marine industries. We also operate flow-meter.com.au. Our tech stack is Laravel with Filament v3 for the backend. We use the TipTap rich text editor with Source Code mode for direct HTML paste. --- ## Understanding Seawater Flow Meter Challenges Seawater is aggressive. It contains chlorides, suspended solids, and marine organisms. These cause corrosion, scaling, and biofouling. A standard flow meter made of 316 stainless steel will fail within months in seawater service. Last year, a customer in Vietnam asked us to replace a vortex meter they installed on a seawater intake line. The meter body corroded at the weld joints after only 8 months. The vortex shedder bar w crude oil flow meter DN200

as completely eaten away. They lost production time and had to emergency order a replacement. Here is what you need to consider when selecting a seawater flow meter: - Corrosion resistance. The wetted parts must handle saltwater continuously. - Biofouling. Marine growth inside the meter pipe can block the sensor. - Conductivity. Seawater has high conductivity, so mag meters work well. - Flow range. Desalination plants operate at varying flow rates from 50 m3/h to over 10,000 m3/h. - Pressure and temperature. Most RO plants run at 10–70 bar and 15–40°C. --- ## Best Flow Meter Types for Seawater ### 1. Electromagnetic Flow Meters for Seawater Feed Mag meters are the industry standard for seawater intake and brine discharge. Seawater has conductivity above 40,000 µS/cm, well above the 5 µS/cm minimum required for mag meters. The key is the lining material. Hard rubber or PTFE linings resist seawater corrosion. For electrode material, use tantalum or Hastelloy. Money you save on standard electrodes will cost you ten times more in replacement. Most engineers skip this part. They buy a standard mag meter with 316SS electrodes. Then the electrodes pit within a year. We have seen this on customer sites many times. A paint manufacturer in Indonesia installed a mag meter with PTFE lining and Hastelloy electrodes on their seawater cooling line. It has been running for 4 years without issues. **Recommended model:** Silver Instruments SMF Series electromagnetic flow meter with PTFE lining and Hastelloy C-276 electrodes. DN80 to DN600. Accuracy ±0.5% of reading. Output 4-20 mA HART. ### 2. Coriolis Flow Meters for Chemical Dosing In desalination plants, chemicals like antiscalant, sodium bisulfite, and chlorine are injecte

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