Yokogawa OpreX Pressure Transmitter EJX S Series with Enhanced Accuracy and Reliability
Yokogawa Electric Corporation has announced the launch of its new OpreX Pressure Transmitter EJX S Series, the latest generation of pressure and differential pressure transmitters designed for industrial process applications.
The new series succeeds the highly successful EJX A Series and brings significant improvements in measurement accuracy, reliability, maintenance efficiency, and environmental sustainability.
The company has built the EJX S Series on its proven silicon resonant sensor technology, which has been continuously refined for more than 30 years.
The new transmitters are designed to help industrial facilities achieve stable operations while reducing maintenance efforts and operating costs.
A New Generation of Pressure Measurement Technology
Pressure transmitters play a critical role in industrial plants by measuring pressure, flow, and liquid level in tanks, pipelines, and process equipment.
Since introducing the world’s first silicon resonant sensor-based pressure transmitter in 1991, Yokogawa has earned a strong reputation for delivering highly accurate and stable measurement solutions.
With increasing demands from modern industries, including stricter regulations, labor shortages, supply chain challenges, and sustainability goals, customers now require instruments that provide more than just accurate measurements.
The new EJX S Series was developed to meet these changing requirements.
Key Performance Improvements in Yokogawa OpreX Pressure Transmitter
One of the biggest highlights of the OpreX Pressure Transmitter EJX S Series is its enhanced measurement performance.
The transmitter offers:
- Higher Accuracy
The EJX S Series provides measurement accuracy of up to ±0.025%, helping plants improve process control and product quality.
- Outstanding Long-Term Stability
The transmitter offers long-term stability of ±0.1% over 20 years, reducing the need for frequent recalibration and maintenance.
- Wide Rangeability
With rangeability up to 400:1, users can measure a wide range of process conditions using a single device.
- Modern Communication Support
The series supports both HART and PROFINET communication protocols, making integration with modern control systems easier.
Built for Harsh Industrial Environments
Industrial plants often operate in challenging conditions where reliability is critical. To address these needs, Yokogawa has equipped the EJX S Series with several features designed to improve durability and dependability.
The transmitter comes with:
- IP68 Dustproof and Waterproof Protection
The device can withstand harsh environmental conditions, including exposure to dust and water.
- SIL2 Functional Safety Compliance
The transmitter meets SIL2 safety requirements, helping improve plant safety and risk reduction.
- Enhanced Noise Immunity
Improved resistance to electrical noise helps ensure stable and reliable measurements.
- New Color Graphic Display
A newly designed backlit color display makes it easier for operators to view process values and instrument status information, even in demanding plant environments.
Reduced Maintenance and Operating Costs
Maintenance efficiency was a major focus during the development of the EJX S Series.
Yokogawa has simplified product specifications by including several important features as standard, such as:
- Support for Multiple Explosion-Proof Certifications
- Dual Power Connection Capability
- Advanced Diagnostic Functions
By making these capabilities standard, users can reduce the complexity of selecting different models and options.
The transmitter also features a modular design, allowing easier replacement of components and faster maintenance activities. This can help plants reduce spare parts inventory and lower overall operating costs.
Additionally, the color LCD display supports NAMUR NE107-compliant diagnostic alerts, enabling maintenance personnel to quickly identify device conditions and troubleshoot problems more efficiently.
Supporting Sustainability Goals
Environmental sustainability has become a key consideration for industrial equipment manufacturers. Yokogawa developed the EJX S Series according to its Trusted Green sustainability principles.
The company states that the new transmitter has been designed to reduce environmental impact throughout its entire lifecycle.
Key sustainability benefits include:
- Reduced CO₂ Emissions During Manufacturing
The production process has been optimized to lower carbon emissions.
- Support for Customer Scope 3 Emission Reduction Goals
Lower manufacturing emissions can contribute to customers’ sustainability initiatives.
- Easy Disassembly and Recycling
The modular design simplifies maintenance, disposal, and recycling at the end of the product’s life.
Applications Across Multiple Industries
The OpreX Pressure Transmitter EJX S Series is designed for a wide range of industries, including:
- Oil & Gas
- LNG
- Chemicals
- Power Generation
- Renewable Energy
- Food & Beverage
- Pharmaceuticals
- Pulp & Paper
- Iron & Steel
- Mining & Metals
- Water & Wastewater
The transmitter can be used for measuring pressure, differential pressure, flow rate, and liquid level in applications involving liquids, gases, and steam.
Global Availability
According to Yokogawa, sales of the OpreX Pressure Transmitter EJX S Series began on March 9 across Southeast Asia, China, North and South America, Europe, Oceania, the Middle East, Africa, and India.
Sales in Japan are expected to begin in September.
The company also indicated that additional models with expanded functionality will be introduced in the future to further strengthen the EJX S product family.
The launch of the OpreX Pressure Transmitter EJX S Series marks an important step in the evolution of Yokogawa’s pressure measurement technology.
By combining industry-leading accuracy, long-term stability, advanced diagnostics, simplified maintenance, and sustainability-focused design, the new transmitter aims to help process industries improve operational efficiency while reducing lifecycle costs.
For plants seeking reliable pressure measurement solutions that align with modern automation and sustainability requirements, the EJX S Series represents a significant advancement over previous generations of pressure transmitters.