Premium Absolute Pressure Measurement for Critical Processes
The Yokogawa EJX310A is a traditional-mount absolute pressure transmitter from the premium EJX-A series.
Unlike gauge pressure measurement, absolute pressure measurement uses a fixed vacuum reference, making it suitable for applications where atmospheric pressure changes may affect measurement accuracy.
The EJX310A combines Yokogawa’s advanced DPharp sensing technology with intelligent diagnostics and rugged industrial design to provide stable measurement performance throughout the operating life of the plant.
Why Choose EJX310A?
Higher Accuracy for Demanding Applications
The EJX310A provides improved measurement performance compared with standard pressure transmitters.
Key performance:
- Up to ±0.04% reference accuracy
- 90 ms fast response time
- Up to 200:1 rangeability
- Stable operation under changing process conditions
This makes the EJX310A suitable for applications where accurate absolute pressure measurement directly affects process efficiency and product quality.
Advanced DPharp Digital Sensor Technology
The EJX310A uses Yokogawa’s proven DPharp digital sensor technology.
Unlike conventional analog sensing technologies, DPharp continuously provides digital sensor information to the transmitter electronics, improving:
- Measurement accuracy
- Repeatability
- Long-term stability
- Diagnostic capability
The active sensor technology continuously monitors sensor conditions, helping operators identify potential issues before they affect production.
Reduce Maintenance and Improve Plant Availability
For industrial facilities, reducing unexpected downtime is a major priority.
The EJX310A helps lower maintenance requirements through:
- ±0.2% URL per 15 years stability
- Advanced self-diagnostics
- Real-time sensor monitoring
- Patented Back-check Technology
- Extended calibration intervals
These functions allow maintenance teams to identify problems faster and improve overall plant reliability.
Designed for Absolute Pressure Applications
Absolute pressure measurement is required when pressure must be measured independently from atmospheric pressure variations.
Typical applications include:
- Gas processing systems
- Vacuum systems
- Storage and delivery systems
- Chemical processes
- Oil and gas facilities
- Power generation equipment
- Industrial process control
The EJX310A provides reliable pressure reference for applications where measurement stability is essential.
Flexible Communication and Easy Integration
The EJX310A supports common industrial communication protocols for integration with existing automation systems.
Available options include:
- HART
- BRAIN
- FOUNDATION Fieldbus
- PROFIBUS PA
The Local Parameter Setting (LPS) function allows selected configuration changes directly at the transmitter without additional tools.
Key Features
- Premium EJX-A series absolute pressure transmitter
- Traditional-mount design
- DPharp digital sensor technology
- Absolute pressure measurement
- Up to ±0.04% reference accuracy
- ±0.2% URL per 15 years stability
- 90 ms response time
- Up to 200:1 rangeability
- Advanced self-diagnostics
- Active Sensor Technology
- Patented Back-check Technology
- Local Parameter Setting (LPS)
- HART / FOUNDATION Fieldbus / PROFIBUS PA communication options
- SIL 2/3 certification
- Rugged industrial construction
- International hazardous area approvals
Typical Applications
The EJX310A is commonly used for:
- Absolute pressure monitoring
- Gas pressure measurement
- Vacuum process monitoring
- Chemical processing
- Oil and gas production
- Refining systems
- Power plants
- Storage tank monitoring
- Industrial automation systems
Frequently Asked Questions
What is the Yokogawa EJX310A used for?
The EJX310A is an absolute pressure transmitter used to measure process pressure against a fixed vacuum reference. It is suitable for applications where atmospheric pressure changes should not affect measurement accuracy.
What is the difference between EJX310A and EJA310E?
Both are traditional-mount absolute pressure transmitters, but they belong to different performance levels.
- EJA310E: Standard EJA-E series absolute pressure transmitter for reliable industrial applications.
- EJX310A: Premium EJX-A series transmitter designed for higher accuracy, longer stability, and more advanced diagnostics.
How accurate is the EJX310A?
The EJX310A provides:
- ±0.075% accuracy with L Capsule
- ±0.04% accuracy with M, A, and B Capsules
depending on configuration.
How stable is the EJX310A?
The EJX310A provides ±0.2% of URL per 15 years stability, helping reduce calibration frequency and maintenance costs.
Why use absolute pressure measurement?
Absolute pressure measurement uses a vacuum reference, making it suitable for applications where atmospheric pressure variations could affect measurement results.
Does EJX310A support HART communication?
Yes. The EJX310A supports HART and other industrial communication protocols depending on configuration.
Is EJX310A suitable for safety applications?
Yes. The EJX-A series supports SIL 2/3 safety certification options for suitable applications.
