Our advantage
Global Logistics
We have a 10-year logistics and express cooperation agreement, so our products can be shipped to any place in the world.
Brand new and original
Our products are imported in bulk from the place of origin. Because of the cooperative relationship, our products are all original and 100% new.
24-hour service
We provide 7*24 hours service to our customers. We will be there whenever you need us.
Price advantage
All our products are priced very favorably because we have our own warehouse and supply.
| Company Information | |||
| sales@plc-automations.com | |||
| Mobile | +8615980777398 | ||
| +8615980777398 | |||
| 15980777398 |

The Yokogawa NFAI835-S50 is an advanced electromagnetic flow transmitter designed for high-precision flow measurement in demanding industrial environments. This product is part of Yokogawa’s NFAI Series, which is renowned for offering robust, reliable, and accurate flow measurement solutions for industries such as water treatment, chemical processing, food and beverage, oil and gas, and pharmaceutical manufacturing.
The NFAI835-S50 utilizes electromagnetic sensing technology to ensure superior accuracy in measuring conductive fluids. It comes equipped with a range of digital communication options like HART, allowing seamless integration with process control systems. Whether for inline or batch processes, the NFAI835-S50 delivers highly reliable flow measurement, enhancing operational efficiency, process optimization, and overall productivity.
| Parameter | Specification |
|---|---|
| Model | Yokogawa NFAI835-S50 |
| Measurement Principle | Electromagnetic Flow Measurement |
| Flow Range | 0.05 to 10 m/s |
| Accuracy | ±0.3% of full scale |
| Output Signal | 4-20 mA, HART Protocol |
| Power Supply | 24 V DC |
| Process Connection | Flanged (DN50 to DN600) |
| Material | Stainless Steel 316L |
| Ingress Protection | IP67 |
| Operating Temperature | -25°C to +70°C |
| Dimensions (L x W x H) | 380 x 210 x 130 mm |
| Weight | 5.2 kg |
| Display Type | LCD (Optional) |
The NFAI835-S50 is engineered for use in a variety of demanding applications where precise and reliable flow measurement is essential:
Water and Wastewater Treatment: Used to monitor flow rates in water and wastewater plants, helping optimize the treatment processes.
Chemical Industry: Suitable for measuring the flow of aggressive chemicals and hazardous materials, ensuring safe and accurate processing.
Food and Beverage: Provides precise flow measurement for applications such as mixing, dilution, and packaging of food and beverage products.
Oil and Gas: Helps in the accurate monitoring of oil, gas, and petrochemical flow rates in pipeline networks and processing facilities.
Pharmaceutical: In pharmaceutical manufacturing, it enables accurate measurement for dosing and ensuring the quality of critical fluid processes.
Energy Sector: The NFAI835-S50 is used in power plants and energy distribution networks to monitor the flow of water, steam, and other fluids.
High Accuracy: With an accuracy of ±0.3% of full scale, the NFAI835-S50 ensures precision in flow measurement, crucial for process optimization and quality control.
Wide Flow Range: It supports a wide flow range from 0.05 to 10 m/s, making it suitable for both low and high flow applications.
Durability: The NFAI835-S50 is constructed with high-quality stainless steel (316L), providing excellent resistance to corrosion and wear in harsh environments.
IP67 Protection: The IP67 rating ensures the device is dust-tight and resistant to water ingress, making it ideal for outdoor installations or applications with high humidity.
Flexible Installation: With flanged connections ranging from DN50 to DN600, the NFAI835-S50 is compatible with a variety of pipeline sizes, offering flexible installation options.
Enhanced Communication: Equipped with HART communication, the NFAI835-S50 allows remote monitoring and easy integration with control systems, simplifying maintenance and troubleshooting.
Long-Lasting Performance: The device is built to last with minimal maintenance, providing reliable long-term performance even in demanding conditions.
Wide Operating Temperature Range: The product operates efficiently within a temperature range of -25°C to +70°C, making it suitable for a variety of environments.
Brand: Yokogawa
Series: NFAI Series (Electromagnetic Flow Transmitters)
Here are five other models in the NFAI Series that are related to the NFAI835-S50:
| Model | Flow Range | Accuracy | Dimensions (L x W x H) | Weight |
|---|---|---|---|---|
| NFAI835-S10 | 0.05 to 3 m/s | ±0.3% of full scale | 350 x 200 x 120 mm | 4.5 kg |
| NFAI835-S20 | 0.05 to 6 m/s | ±0.3% of full scale | 360 x 210 x 125 mm | 4.7 kg |
| NFAI835-S40 | 0.05 to 8 m/s | ±0.3% of full scale | 370 x 215 x 130 mm | 5.0 kg |
| NFAI835-S60 | 0.05 to 12 m/s | ±0.3% of full scale | 380 x 220 x 135 mm | 5.3 kg |
| NFAI835-S70 | 0.1 to 15 m/s | ±0.3% of full scale | 390 x 230 x 140 mm | 5.5 kg |
Here are five other popular models from Yokogawa that are related to flow measurement and automation:
| Model | Flow Range | Accuracy | Material | Dimensions (L x W x H) | Weight |
|---|---|---|---|---|---|
| ROTAMASS III | 0.001 to 60,000 kg/h | ±0.1% of reading | Stainless Steel | 400 x 250 x 150 mm | 5.6 kg |
| DPharp EJA530A | 0 – 2500 kPa | ±0.1% of span | Stainless Steel | 125 x 95 x 58 mm | 1.4 kg |
| EJA310A | 0 – 5000 kPa | ±0.075% of span | Stainless Steel | 130 x 95 x 55 mm | 1.3 kg |
| EJA118E | 0 – 4000 kPa | ±0.1% of span | Stainless Steel | 140 x 110 x 65 mm | 1.6 kg |
| DPharp EJA310 | 0 – 7000 kPa | ±0.075% of span | Stainless Steel | 130 x 95 x 55 mm | 1.5 kg |
Q1: What is the flow range of the NFAI835-S50?
A1: The NFAI835-S50 has a flow range from 0.05 to 10 m/s.
Q2: What is the accuracy of the NFAI835-S50?
A2: The NFAI835-S50 offers an accuracy of ±0.3% of full scale.
Q3: Can the NFAI835-S50 be used for non-conductive fluids?
A3: No, the NFAI835-S50 is designed for conductive fluids only, as it uses electromagnetic sensing technology.
Q4: What industries use the NFAI835-S50?
A4: The NFAI835-S50 is used in industries like water treatment, chemical processing, food and beverage, oil and gas, and pharmaceuticals.
Q5: Does the NFAI835-S50 support HART communication?
A5: Yes, the NFAI835-S50 supports HART communication for easy integration with control systems.
Q6: What is the power supply required for the NFAI835-S50?
A6: The NFAI835-S50 requires a 24 V DC power supply.
Q7: What is the ingress protection rating of the NFAI835-S50?
A7: The NFAI835-S50 has an IP67 rating, ensuring it is dust-tight and water-resistant.
Q8: What is the temperature range for the NFAI835-S50?
A8: The NFAI835-S50 operates in temperatures ranging from -25°C to +70°C.
Q9: Can the NFAI835-S50 be installed outdoors?
A9: Yes, the NFAI835-S50 is suitable for outdoor installations, thanks to its IP67 rating and durable construction.
Q10: What materials is the NFAI835-S50 made from?
A10: The NFAI835-S50 is made from stainless steel 316L, ensuring durability and corrosion resistance.
Authenticity guarantee
All product specifications are original and authentic imported products. We have an annual sales volume of 300 million yuan, and we only produce original and authentic products. All customers who cooperate with us directly online can enjoy low discounts.
Free warehouse
We have a complete range of product models, 80% of conventional models are in stock, and we have established channels in Asia, Africa, North America, South America, and Europe, effectively shortening the order processing time and satisfying customers in a timely manner.
Technical Team
Fast delivery. Spot goods can be shipped on the same day, and the delivery time transaction is 20% faster than that of peers on average, with a delivery time accuracy rate of 99%.
Thoughtful after-sales service
24-hour after-sales service guarantee team, professional and standardized management service system.