Yokogawa launches OpreX Pressure Transmitter EJX S Series

Yokogawa Electric Corporation has launched OpreX Pressure Transmitter EJX S Series as the successor to its core EJX A lineup of differential pressure and pressure transmitters in its OpreX field instruments family

Building on Yokogawa's proven silicon resonant sensor technology, the EJX S Series offers enhancements in accuracy, long-term stability, and durability that ensure stable plant operations and improve maintenance efficiency. Yokogawa will continue to add new models with enhanced capabilities to the EJX S lineup, according to market needs.

Main features of the OpreX pressure transmitter EJX S Series

1. Improved performance and reliability that contribute to stable plant operation

Leveraging Yokogawa’s silicon resonant sensor technology, the EJX S Series features improved accuracy, long-term stability, and rangeability.

Main specifications:
- Accuracy: ±0.025% (with optional specification code /HAC)
- Long-term stability: ±0.1% per 20 years
- Rangeability: Up to 400:1
- Support for the HART and PROFINET communication protocols

With an IP68 dustproof and waterproof rating, compliance with SIL2 requirements, and enhanced noise immunity, the EJX S Series is even more reliable and robust. In addition, a new colour backlit graphic display significantly improves visibility of process variables and device status information.

2. Streamlined specifications that reduce maintenance and operating costs

Compliance with a variety of explosion-proof standards, support for dual power connections, and advanced diagnostic functions are all provided as standard features with the EJX S Series, allowing these devices to cover a wider range of applications and reducing the need for the ordering of products with specific model and suffix codes. Furthermore, a modular design allows parts replacement and maintenance work to be carried out easily and efficiently. Together, these characteristics help to improve maintenance efficiency and reduce inventory costs.

In addition, the LCD colour display supports NAMUR NE107-compliant alert indications, enabling intuitive recognition of device status even from a distance. This facilitates faster on-site inspections.

3. Reduction of environmental impact through product design

The OpreX Pressure Transmitter EJX S Series pressure transmitters were designed to reduce environmental impact over the entire product lifecycle. CO2 emissions have been significantly reduced during the production process, helping customers reduce their Scope 3 emissions. Furthermore, the adoption of a modular design that allows for easy disassembly and disposal contributes to the optimization of customers' maintenance parts and inventory, as well as a reduction in environmental impact after use.

Major target markets are oil & gas, LNG, downstream, chemicals, power, renewable energy, food & pharma, pulp & paper, iron & steel, mining & metal, water & wastewater.

Major applications are measurement of liquid level, flow rate, pressure, etc. of liquid, gas, and steam in tanks and pipes.

OpreX is the comprehensive brand for Yokogawa's industrial automation and control business. OpreX Measurement delivers highly reliable technology for the implementation of value-enhancing operational technology and information technology integration.