2025 US Ship Seawater Heat Measurement DN20 Electromagnetic Flowmeter Solution - Flowmeter Manufacturer
Keywords: US Ship Electromagnetic Flowmeter, Jujea Seawater Corrosion-Resistant Flowmeter, DN20 Electromagnetic Flowmeter, PTEF-Lined Electromagnetic Flowmeter, Ship Seawater Heat Measurement
On August 25, 2025, a US ocean shipping company completed commissioning of its Jujea DN20 electromagnetic flowmeter, which was installed on its ships and officially began seawater heat measurement. The device, with its PTEF lining and HC electrodes, offers superior corrosion resistance, effectively preventing alkaline seawater from corroding the metering equipment. It also accurately captures seawater flow data, providing reliable support for calculating the heat consumption of seawater on ships. As a company specializing in the research and development and manufacturing of flow metering equipment, Jujea specializes in producing high-quality flow
products for flow measurement and control, leveraging customized products and specialized technology.
1. Pain Points in Seawater Metering on US Ships: The Dual Challenges of Corrosiveness and Heat Measurement
1.1 Core Customer Needs and Operating Conditions
This US ocean shipping company's ships rely on seawater cooling systems to maintain normal equipment operation. Their requirements focused on metering in DN20 seawater pipelines:
Accurately measure the seawater flow rate when the pipe is full, and combine this with temperature data to calculate the heat consumed by the seawater to optimize cooling system energy consumption;
Address the highly corrosive nature of alkaline seawater, preventing equipment damage from corrosion and resulting in metering failure, thereby ensuring equipment stability during navigation;
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The equipment must be adapted to the unique, bumpy, and humid operating environment of the ship to ensure long-term stable operation.
From an operating perspective, the alkaline seawater transported by ship seawater pipelines corrodes ordinary metals at a rapid rate. Conventional flowmeters experience electrode corrosion and lining damage after just one to two months of use. Furthermore, traditional equipment cannot simultaneously meet the dual requirements of flow and heat measurement, posing a significant operational challenge for the company. 1.2 The company encountered flow measurement problems
Before partnering with jujea, the company had tried two conventional electromagnetic flowmeters, both of which failed due to incompatibility between materials and functionality:
Poor corrosion resistance: Ordinary 316L stainless steel electrodes and rubber linings experienced electrode scaling and lining cracking after only one month of use in alkaline seawater, increasing flow measurement error from ±2% to ±8%;
Lack of compatibility with heat measurement: The lack of a dedicated temperature sensor interface prevented simultaneous collection of seawater temperature data, requiring additional equipment, increasing the complexity of the pipeline layout and the risk of failure;
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Weak environmental adaptability: The turbulence of the ship caused the equipment wiring to loosen, resulting in repeated data disconnections and impacting the real-time control of the cooling system.
"During ocean voyages, any failure of seawater metering equipment would directly threaten equipment safety. We urgently needed a flowmeter that was corrosion-resistant, provided stable measurement, and compatible with heat calculations," said the company's technical director. After learning about jujea's corrosion-resistant flowmeter
solution at an industry exhibition, they immediately initiated a partnership consultation.
2. Jujea's Customized DN20 Corrosion-Resistant Electromagnetic Flowmeter Solution
To meet the seawater measurement needs of US ships, Jujea, as a manufacturer, leveraged its independent R&D and production capabilities to customize a DN20 electromagnetic flowmeter solution. We oversaw the entire process, from material selection to functional design, ensuring that core parameters were precisely matched to the ship's operating conditions:
2.1 Flowmeter Product Parameters: Corrosion-Resistant and Accurate Measurement
Parameter Category |
Specific specifications |
Advantages |
|
Basic specifications
|
Diameter DN20, measuring medium is alkaline seawater, full pipe measurement; Pressure Level: 1.0MPa |
Perfectly adapted to ship DN20 seawater pipelines, meeting high-pressure full-pipe operation requirements |
Corrosion-resistant design |
Lining material PTEF (polytetrafluoroethylene), resistant to acid and alkali corrosion; electrode material HC (Hastelloy C), resistant to seawater corrosion |
PTEF lining temperature resistance - 20℃-120℃
|
|
Measurement accuracy
|
Flow measurement accuracy ±0.5%; flow rate range 0.57-5.7m3/h |
Accurately capture seawater flow data to provide a reliable basis for heat calculation |
Environmental adaptability |
Operating temperature - 25℃-60℃; protection level IP65 |
Adaptable to the bumpy and humid environment of ships, the splash-proof design ensures stable operation of the equipment |
Data Output |
Supports RS485 (Modbus-RTU protocol), 4-20mA analog signal, and can be connected to the ship's central control system |
Real-time transmission of flow and temperature data facilitates the central control system to calculate the heat consumption of seawater and optimize the cooling system |
2.2 Advantages of Flow Meter Manufacturers: Full-Process Guidance from R&D to Delivery
As an electromagnetic flowmeter manufacturer, Jujea's core advantage lies in its deep responsiveness to product quality and customer needs:
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Customized R&D: Targeting alkaline seawater, Jujea conducts specialized testing for compatibility between PTEF linings and HC electrodes to ensure corrosion resistance meets standards. Flowmeter dimensions are optimized to accommodate vessel piping space for easy installation.
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Production Quality Control: Jujea manufactures core components (electrodes, linings, and converters) on its own production line. Each DN20 electromagnetic flowmeter undergoes a 72-hour full-load test to ensure a 100% factory-qualified product.
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Fast Delivery: From order confirmation to shipment, Jujea delivers within just 7 days. Direct international logistics routes to US ports are used, and remote installation guidance is provided to significantly shorten project cycles.
Technical Support: Jujea's English-speaking technical team provides 24-hour remote service. They develop equipment maintenance manuals tailored to vessel operating conditions, guiding crew members on routine inspections and simple troubleshooting.
3. Accurate Flow Measurement to Solve Ship Energy Consumption Optimization Project
Since its commissioning on August 25, 2025, the Jujea DN20 electromagnetic flowmeter has exceeded customer expectations:
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Corrosion resistance meets standards: After one month of continuous operation, a disassembly inspection revealed no damage to the PTFE lining, no corrosion on the HC electrode, and stable flow measurement errors.
Efficient heat measurement: Combined with a PTFE temperature sensor, it outputs real-time seawater flow and temperature data. The ship's central control system can automatically calculate seawater heat consumption, reducing cooling system energy consumption by 12%.
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Stable and reliable operation: During three ocean voyages, the device experienced no data disconnection or malfunction, proving its ability to withstand the turbulent ship environment. "As a manufacturer, Jujea accurately grasped our pain points and customized a corrosion-resistant solution that was more reliable than expected," commented the company's technical director. "All new ships will be equipped with Jujea's electromagnetic flowmeters, and we also plan to upgrade the existing fleet."
4. Jujea, as a flow meter manufacturer, uses case studies and experience to solve customer problems.
In addition to the seawater heat measurement project for US ships, Jujea's corrosion-resistant electromagnetic flowmeters are widely used in cruise ships, cargo ships, fishing vessels, and other applications worldwide. We offer customized solutions for corrosive media such as seawater and salt water, ranging from DN15 to DN1000. As a manufacturer, Jujea consistently prioritizes "material innovation + precise measurement" and continuously develops flow equipment suitable for extreme operating conditions, providing cost-effective solutions for industries such as shipping, chemical industry, and water treatment.
Conclusion
The successful 2025 US ship DN20 electromagnetic flowmeter project demonstrates Jujea's technical strength and service capabilities as a manufacturer. Going forward, jujea will continue to focus on industry challenges, solving flow measurement challenges for more international customers with customized products and global services, aiming to become a globally trusted flow equipment manufacturer.
Contact Information: For customized corrosion-resistant electromagnetic flowmeter solutions for applications such as marine and chemical industries, please visit the jujea website or call our international service hotline for a free application analysis and quote.
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