Yokogawa Eja438e Pressure Transmitter

The yokogawa eja438e pressure transmitter is an advanced instrument in the DPharp EJA-E series, specifically engineered for applications where the process medium cannot come into direct contact with the transmitter's sensing element. Whether handling high-temperature fluids, corrosive chemicals, or media prone to crystallization and clogging, the EJA438E utilizes remote diaphragm seals to provide accurate and stable gauge pressure measurements. This robust design protects the sensor while maintaining the high performance and fast response times needed for critical process control.

Key Features and Technical Specifications

Proven Accuracy & Speed: Offers a reference accuracy of ±0.2% of span and a rapid response time of 200 milliseconds, ensuring timely data for process adjustments.
Active Sensor Technology: Features the proprietary DPharp digital sensor, which provides superior stability and inherent safety diagnostics compared to passive analog sensors.
Comprehensive Safety: Standard compliance with IEC 61508 for SIL 2 (single) and SIL 3 (dual) safety applications, reducing risk without extra inventory.
Flexible Configuration: Available with various process connections (Flush, Extended, Inner Diaphragm) and fill fluids to suit specific temperature and pressure requirements.
Smart Diagnostics: Equipped with advanced self-checks and impulse line blocking detection to predict maintenance needs before failures occur.

Industry Applications and Operational Benefits

The EJA438E excels in industries such as Oil & Gas, Chemical Processing, and Pulp & Paper, where "wetted parts" must withstand aggressive conditions. Its diaphragm seal system effectively isolates the transmitter from viscous or precipitating fluids that would otherwise clog standard impulse piping. By integrating the yokogawa eja438e pressure transmitter, facility operators can eliminate the need for heat tracing on wet legs, reduce maintenance frequency, and ensure consistent performance in vacuum or high-pressure services, ultimately driving greater operational efficiency and safety.

Product Specifications

Item	Specification
Measurement Types
Primary Variable	Gauge Pressure
Reference Accuracy
Primary Variable	±0.2% of Span
Response Time
Primary Variable	200 ms
Specification Conformance
EJA-E Series	±3σ

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