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Stainless Steel Flow Meter: Corrosive & Marine Fluid Solutions
Quick Answer: Stainless steel flow meters from Silver Automation Instruments handle corrosive chemicals and seawater without early failure. We supply 316L electromagnetic flow meters with PTFE liners, all-stainless Coriolis mass meters, and oval gear meters for marine fuel. Send us your fluid name, pipe size DN, flow range, and pressure to get a specific model recommendation and price today.
Many flow meter failures on corrosive fluids happen because a carbon steel body or wrong liner was picked. In a saltwater line, 304 stainless can pit within weeks. We see this pattern at customer sites across Southeast Asia and the Middle East. That is why material selection comes first. 316L stainless steel is the minimum for seawater and mild acids. For hydrochloric acid, sulfuric acid, or aggressive brines, we step up to Hastelloy C electrodes and PTFE or PFA liners. A paint plant in Indonesia learned this the hard way after three magnetic meters failed in six months. After switching to our 316L electromagnetic flow meter with PTFE liner, they ran for two years with zero corrosion downtime.
Electromagnetic Flow Meters for Conductive Corrosive Fluids
Electromagnetic flow meters are our most common solution for acids, caustics, and seawater because they have no moving parts. The wetted materials are limited to the liner and electrodes. With a PTFE or PFA liner and Hastelloy C-276 electrodes, a meter handles 37 percent HCl at 80 degrees Celsius or seawater brine at constant 60 degrees Celsius. Accuracy stays within plus or minus 0.5 percent of reading across a flow range from 0.1 m/s to 15 m/s. Output choices include 4-20 mA HART, pulse, and RS485 Modbus. Sizes go from DN15 to DN2000. For ballast water treatment or desalination plant intake, we often supply DN300 or DN400 meters with titanium electrodes and IP68 316L housing.
Coriolis Mass Flow Meters for Aggressive Chemicals and Marine Fuel
When the fluid is non-conductive, or you need mass flow and density, a Coriolis meter with all-316L wetted parts does the job. These meters ignore changes in viscosity, temperature, or density. A DN15 Coriolis meter with a flow capacity of 1000 kg per hour is a common choice for chemical injection on offshore platforms in Malaysia and Nigeria. It delivers mass flow, density, and temperature from one device. No moving parts means less corrosion risk. For marine diesel and heavy fuel oil, we supply ATEX Zone 1 certified versions with IP67 enclosures. Ship engineers on cargo vessels in Latin America use them for fuel transfer monitoring with 4-20 mA signals to their engine room control system.
Positive Displacement and Ultrasonic Options
Stainless steel oval gear flow meters handle non-conductive corrosive fluids like solvents or certain oils. A DN25 meter with 316L body and PEEK gears gives plus or minus 0.5 percent accuracy for low flow dosing. In practice, this works well f
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Marine Environment Requirements
Salt spray and humidity demand IP68 or at least IP67 enclosures. All our stainless steel meters for marine use come with 316 steel cable glands and potted electronics. External body material is always 316L, not painted carbon steel. In ship engine rooms where fuel vapors exist, meters must carry ATEX Zone 1 or IECEx certification. We keep a stock of ATEX-certified Coriolis meters for quick delivery to shipyards in Turkey and Greece.
Specifying Your Meter
Getting the right meter takes five numbers and avoids weeks of emails. Give us these details:
Fluid name and concentration, like 30 percent sulfuric acid at 25 degrees Celsius
Flow range in liters per minute or kilograms per hour
Pipe size and flange standard, for example DN50 ANSI 150
Operating pressure in bar and temperature in degrees Celsius
Output signals and certifications (4-20 mA, HART, Modbus, ATEX, IP68)
Send your pressure (bar), temperature (degrees Celsius), pipe size (DN), and flow range to [email protected]. We reply with a model and price in one working day.
FAQ
Can a 316L stainless flow meter handle HCl?
Pure 316L attacks in hydrochloric acid. For HCl, we use an electromagnetic flow meter with PTFE or PFA liner and Hastelloy C electrodes. This handles concentrations up to 37 percent at moderate temperatures.
What is the recommended meter for a desalination plant brine line?
Electromagnetic flow meter with 316L body, PTFE liner, and titanium electrodes. Sizes range from DN200 to DN500 depending on plant capacity.
Do you offer ATEX stainless steel meters for ship fuel?
Yes. Our 316L Coriolis mass meters come with ATEX Zone 1. They work on diesel, MGO, and HFO transfer lines across tankers and supply vessels.
What is the price range for a DN40 stainless magnetic flow meter?
A DN40 316L electromagnetic meter with PTFE lining, Hastelloy electrodes, and IP68 housing starts around USD 900 to 1300. Price varies with liner, electrodes, and certifications. Contact us with your exact spec for a formal quotation.
How do you stop external corrosion on a flow meter in salt air?
We build the housing and glands from 316 stainless. Epoxy coating is optional. IP68 seals stop salt moisture from reaching the electronics inside.
For a quote or technical selection help, contact Silver Automation Instruments. Email: [email protected] | Tel: +86-135-1213-1526 | WhatsApp: 86-135-12131526 | WeChat: +86 13512131526. We answer within 24 hours.
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