Abstract

The Yokogawa EJA110E differential pressure transmitter represents a state-of-the-art solution for precise pressure measurement in demanding industrial environments. This technical paper examines the device's operating principles, design features, and implementation scenarios across various industries. With its single-crystal silicon resonant sensor technology and robust construction, the EJA110E delivers exceptional measurement accuracy and long-term stability, making it particularly suitable for critical applications in oil and gas, chemical processing, and power generation sectors.

1. Introduction to Yokogawa EJA110E Technology

The EJA110E differential pressure transmitter incorporates Yokogawa's proprietary Single-Crystal Silicon Resonant Sensor technology, which provides superior performance compared to conventional strain gauge-based transmitters. This advanced sensing mechanism enables the device to achieve industry-leading accuracy of ±0.04% of span, with long-term stability of ±0.1% of URL per 10 years. The transmitter's design features all-welded stainless steel construction (SUS316L wetted parts), ensuring durability in corrosive environments and extreme process conditions (-40 to 120°C operating temperature range).

2. Core Technical Specifications

2.1 Measurement Performance

• Measuring range: 0.5 kPa to 10 MPa

• Accuracy: ±0.04% of span (standard), ±0.075% of span (with digital communication)

• Long-term stability: ±0.1% of URL per 10 years

• Response time: 90 ms (adjustable from 0.5 to 64 seconds)

2.2 Environmental Robustness

• Operating temperature: -40 to 120°C (-40 to 248°F)

• Process temperature limits: -40 to 120°C (standard), up to 200°C with remote seal

• Protection rating: IP67, NEMA 4X

• Vibration resistance: 2g at 10-150 Hz

2.3 Electrical and Communication Features

• Output signals: 4-20 mA DC with HART 5/7, BRAIN, or FOUNDATION Fieldbus protocols

• Power supply: 10.5-42 V DC (HART/BRAIN), 9-32 V DC (Fieldbus)

• Diagnostic capabilities: comprehensive self-diagnostics including sensor, electronics, and communication health monitoring

3. Industrial Application Scenarios

3.1 Oil and Gas Processing

The EJA110E excels in upstream, midstream, and downstream applications:

• Wellhead pressure monitoring

• Pipeline flow measurement (using orifice plates)

• Tank level measurement in storage facilities

• Gas compression station monitoring

3.2 Chemical and Petrochemical Plants

• Reactor pressure differential monitoring

• Distillation column pressure control

• Filter and strainer differential pressure measurement

• Pump protection systems

3.3 Power Generation

• Steam turbine inlet/outlet pressure monitoring

• Feedwater heater performance measurement

• Air preheater differential pressure

• Boiler combustion control

4. Installation and Maintenance Considerations

Proper installation significantly impacts the EJA110E's performance and longevity:

• Mounting orientation should maintain impulse piping filled with process fluid

• Remote seal options available for high-temperature applications

• Regular zero calibration recommended (every 6-12 months)

• Advanced diagnostics accessible through FieldMate or other asset management software

5. Comparative Advantages

The EJA110E offers several advantages over conventional differential pressure transmitters:

1. Superior accuracy and stability due to single-crystal silicon technology

2. Reduced maintenance requirements with all-welded construction

3. Enhanced process safety through comprehensive diagnostics

4. Flexible communication options for integration with modern control systems

5. Global certifications including ATEX, IECEx, FM, and CSA for hazardous area use

6. Conclusion

The Yokogawa EJA110E differential pressure transmitter sets a new standard for process measurement reliability and accuracy. Its innovative sensor technology, combined with robust construction and advanced diagnostics, makes it an ideal choice for critical measurement applications across multiple industries. The transmitter's ability to maintain precision in challenging environments while providing actionable diagnostic information supports predictive maintenance strategies and helps optimize process efficiency.

For additional technical details and specifications, refer to Yokogawa's official product documentation: Yokogawa EJA110E Product Page

Keywords for SEO Optimization:Yokogawa EJA110E, differential pressure transmitter, single-crystal silicon sensor, process measurement, industrial pressure monitoring, HART communication, process automation, oil and gas instrumentation, chemical plant sensors, predictive maintenance.

-Endress+Hauser Instruments    

-ALLEN BRADLEY PLC

-YOKOGAWA Instruments

-MTL

-P+F

-More products