Yokogawa Electric Corporation has announced the release of the OpreX™ Pressure Transmitter EJX S Series, marking a significant evolution from the industry-standard EJX A series. Built upon three decades of refined silicon resonant sensor technology, the EJX S series transmitters offer enhanced accuracy, long-term stability, and ruggedness to ensure stable plant operations and improved maintenance efficiency. The series will be available globally across Southeast Asia, China, North America, Europe, and the Middle East starting in early 2026.
01 Technical Specifications and Performance Enhancements
The EJX S series transmitters leverage Yokogawa’s proprietary silicon resonant sensor technology to provide industry-leading performance metrics tailored for modern manufacturing demands.
| Ciri | Spesifikasi Teknikal | Operational Benefit |
| Ketepatan Rujukan | ±0.025% (with /HAC option) | Superior process control precision |
| Long-term Stability | ±0.1% per 20 years | Extended calibration intervals |
| Nisbah Turndown | Up to 400:1 | Reduced inventory through range versatility |
| Komunikasi | HART and PROFINET | Seamless IT/OT integration |
| Environmental Protection | IP68 rated | Extreme dust and water resistance |
| Integriti Keselamatan | SIL2 certified (IEC 61508) | High-reliability safety instrumented systems |
02 Operational Efficiency and Cost Reduction
The design of the Yokogawa EJX S series transmitters focuses on simplifying configuration and reducing the total cost of ownership (TCO) throughout the product lifecycle.
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Simplified Specification: Standard units now include multiple explosion-proof certifications and support dual power connections. This modular approach reduces the need for highly specific model and suffix codes, simplifying the procurement process.
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Advanced Visual Diagnostics: The series features a new color backlit graphical display that supports NAMUR NE107 standard alarm indicators. This allows technicians to identify equipment status intuitively, even from a distance, accelerating field inspections.
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Efficient Maintenance: Modular components allow for easier part replacement and troubleshooting. By standardizing advanced diagnostic functions as base features, the EJX S series transmitters reduce the complexity of spare parts management.
03 Sustainability and Green Design Philosophy
In alignment with Yokogawa’s “Trusted Green” sustainability principles, the OpreX Pressure Transmitter EJX S series was developed to minimize environmental impact from production to disposal.
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Carbon Footprint Reduction: Manufacturing processes for the new series have achieved a significant reduction in CO2 emissions, assisting customers in lowering their Scope 3 carbon footprint.
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Circular Economy: The modular construction is specifically designed for easy disassembly and recycling. This not only optimizes inventory management but also reduces the environmental burden after the product reaches its end-of-life.
04 Target Markets and Applications
The versatility and high performance of the Yokogawa EJX S series transmitters make them ideal for a wide array of demanding industrial sectors:
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Core Industries: Oil and Gas, LNG, Chemical, Power Generation, and Renewable Energy.
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Specialized Sectors: Food and Pharmaceuticals, Pulp and Paper, Iron and Steel, and Water Treatment.
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Key Applications: Precision measurement of liquid, gas, and steam levels, flow rates, and pressures in both storage tanks and complex piping networks.
05 Procurement and Technical Support
Implementing the next generation of field instrumentation requires a partner capable of providing authentic hardware and technical configuration expertise. Xi’an Yunrui Trading Co., Ltd. (Yunrui) supports the transition to the new EJX S series transmitters with a focus on technical verification and global logistics.
Expert support is available to assist in transitioning from existing EJX A models to the enhanced EJX S series transmitters, ensuring that model selections match specific pressure ranges and material requirements. Strategic inventory management at the Xi’an warehouse helps mitigate supply chain delays, while specialized logistics services ensure compliance with international shipping standards, including DDP services for the Middle East and Southeast Asia.
