Reliable Absolute Pressure Measurement for Industrial Processes
The Yokogawa EJA310E is a traditional-mount absolute pressure transmitter from the EJA-E series, designed for applications requiring accurate pressure reference independent of atmospheric pressure variations.
Unlike gauge pressure measurement, absolute pressure measurement uses a vacuum reference, making the EJA310E suitable for applications where pressure accuracy and process stability are critical.
The EJA-E series combines the proven reliability of Yokogawa pressure transmitters with advanced digital sensing technology, providing dependable performance throughout long-term operation.
Why Choose EJA310E?
Accurate Absolute Pressure Measurement
The EJA310E is designed specifically for absolute pressure applications.
It provides:
- ±0.1% reference accuracy
- 90 ms response time
- Wide measurement range with multiple capsule options
- Stable operation under normal process conditions
By using an absolute pressure reference, the transmitter avoids measurement errors caused by changes in atmospheric pressure, making it suitable for critical process applications.
Proven DPharp Digital Sensor Technology
The EJA310E uses Yokogawa’s DPharp digital sensor technology.
Compared with conventional analog sensor designs, DPharp technology directly provides digital sensor output, reducing signal conversion errors and improving measurement consistency.
This technology also enables intelligent device functions and advanced diagnostics, helping operators better understand transmitter status and process conditions.
Reduce Maintenance and Improve Plant Availability
Industrial processes require pressure transmitters that can operate reliably for long periods.
The EJA310E helps reduce maintenance requirements through:
- Long-term stability
- Advanced self-diagnostics
- Active sensor technology
- Real-time signal checking
- Rugged industrial construction
These features help reduce unnecessary calibration work and improve overall plant availability.
Suitable for Critical Gas and Process Applications
Absolute pressure measurement is commonly required in applications where pressure must be measured against a fixed vacuum reference.
The EJA310E is suitable for:
- Gas storage systems
- Gas processing equipment
- Vacuum-related applications
- Chemical processes
- Oil and gas facilities
- Power generation systems
- General industrial process control
Flexible Communication Options
The EJA310E supports common industrial communication protocols for easy integration into existing automation systems.
Available options include:
- HART 5 / HART 7
- FOUNDATION Fieldbus
- PROFIBUS PA
- BRAIN
- Low Power 1–5 V DC with HART 7
The Local Parameter Setting (LPS) function allows convenient configuration adjustments directly at the transmitter.
Key Features
- Traditional-mount absolute pressure transmitter
- Yokogawa EJA-E series
- DPharp digital sensor technology
- Absolute pressure measurement
- Suitable for liquid and gas applications
- ±0.1% reference accuracy
- 90 ms response time
- ±0.2% URL per 10 years stability
- Multiple capsule options
- Advanced self-diagnostics
- Local Parameter Setting (LPS)
- HART / FOUNDATION Fieldbus / PROFIBUS PA communication options
- SIL 2/3 certification options
- Rugged industrial construction
- International hazardous area approvals
Typical Applications
The EJA310E is commonly used for:
- Absolute pressure monitoring
- Gas pressure measurement
- Vacuum pressure measurement
- Storage tank pressure monitoring
- Chemical processing
- Oil and gas applications
- Power generation
- Process equipment monitoring
- Industrial automation systems
Frequently Asked Questions
What is the Yokogawa EJA310E used for?
The EJA310E is an absolute pressure transmitter used to measure process pressure against a vacuum reference. It is commonly used in applications where atmospheric pressure changes may affect measurement accuracy.
What is the difference between EJA310E and EJA430E?
The main difference is the pressure reference:
- EJA310E: Measures absolute pressure using a vacuum reference.
- EJA430E: Measures gauge pressure relative to atmospheric pressure.
EJA310E is preferred for applications requiring stable absolute pressure measurement.
Why use absolute pressure instead of gauge pressure?
Absolute pressure measurement eliminates the influence of atmospheric pressure changes, making it suitable for applications involving gases, vacuum systems, storage, and processes requiring precise pressure reference.
How accurate is the EJA310E?
The EJA310E provides ±0.1% reference accuracy depending on capsule configuration.
How stable is the EJA310E?
The EJA310E provides long-term stability of ±0.2% of URL per 10 years under normal operating conditions.
Does EJA310E support HART communication?
Yes. The EJA310E supports HART and other industrial communication protocols depending on configuration.
Is EJA310E suitable for gas measurement?
Yes. The EJA310E is widely used for gas pressure measurement and other applications requiring absolute pressure measurement.
Why choose EJA310E instead of a standard pressure transmitter?
The EJA310E combines Yokogawa’s proven DPharp technology, reliable construction, intelligent diagnostics, and long-term stability to provide dependable industrial pressure measurement.
