A Proven Pressure Transmitter for Industrial Applications
The Yokogawa EJA430E is a traditional-mount gauge pressure transmitter from the EJA-E series. It is designed for users who need dependable pressure measurement with proven technology, stable performance, and compatibility with modern industrial communication systems.
The EJA-E series represents Yokogawa’s evolution of the DPharp pressure transmitter family, combining the ruggedness of the EJA series with improved digital performance and intelligent device functions.
Why Choose EJA430E?
Accurate Measurement for Better Process Control
The EJA430E provides:
- ±0.055% reference accuracy
- ±0.04% accuracy with /HAC option
- 90 ms response time
- ±0.1% of URL per 10 years stability
These performance characteristics help maintain consistent process conditions and reduce measurement deviation during long-term operation.
What Is DPharp Digital Sensor Technology?
The EJA430E uses Yokogawa’s DPharp single-crystal silicon resonant sensor technology.
Unlike conventional pressure sensors that require additional analog-to-digital conversion, DPharp technology directly provides digital sensor output, helping improve measurement accuracy, repeatability, and reliability.
This technology also supports advanced diagnostics, allowing operators to gain better insight into transmitter status and process conditions.
How Does EJA430E Reduce Maintenance?
The EJA430E includes intelligent functions designed to improve plant availability.
Its diagnostic capabilities help identify abnormal conditions earlier, while long-term stability of ±0.1% URL per 10 years helps extend calibration intervals and reduce unnecessary maintenance work.
The optional local indicator can display measured variables, alarm codes, and process information directly in the field, helping technicians troubleshoot faster.
Flexible Communication Options
The EJA430E supports multiple communication protocols to fit different control system requirements:
- HART 5/HART 7
- BRAIN
- FOUNDATION Fieldbus
- PROFIBUS PA
- Low Power 1–5 V DC with HART 7
This flexibility allows easier integration into existing industrial automation systems.
Key Features
- Traditional-mount gauge pressure transmitter
- Yokogawa EJA-E series
- DPharp digital sensor technology
- Suitable for liquid, gas, and steam measurement
- ±0.055% reference accuracy
- ±0.04% accuracy option
- 90 ms response time
- ±0.1% URL per 10 years stability
- 100:1 rangeability
- Advanced self-diagnostics
- Local Parameter Setting (LPS)
- HART, BRAIN, FOUNDATION Fieldbus, PROFIBUS PA options
- SIL 2/3 certification options
- Rugged industrial construction
- Multiple hazardous area approvals
Typical Applications
The EJA430E is commonly used for:
- Process line pressure measurement
- Liquid pressure measurement
- Gas pressure measurement
- Steam pressure measurement
- Pump and compressor monitoring
- Tank pressure measurement
- Chemical processing
- Oil and gas facilities
- Power generation
- Water and wastewater treatment
- General industrial process control
Frequently Asked Questions
What is the Yokogawa EJA430E used for?
The EJA430E is a gauge pressure transmitter used to measure the pressure of liquids, gases, and steam in industrial processes.
What type of pressure does EJA430E measure?
The EJA430E measures gauge pressure, meaning it measures process pressure relative to atmospheric pressure.
What is the accuracy of EJA430E?
The standard reference accuracy is ±0.055% of span. With the /HAC option, accuracy can reach ±0.04% of span.
How stable is the EJA430E?
The EJA430E provides ±0.1% of URL per 10 years stability, helping reduce calibration frequency and maintenance costs.
What is the difference between EJA430E and EJX530A?
The main difference is the product series positioning:
- EJA430E: EJA-E series traditional-mount gauge pressure transmitter focused on reliable industrial measurement.
- EJX530A: Premium EJX-A series transmitter focused on higher performance and advanced specifications.
Both use Yokogawa DPharp technology, but EJX series provides higher-end performance.
Can EJA430E measure steam pressure?
Yes. The EJA430E is designed for measuring liquid, gas, and steam pressure.
Does EJA430E support HART communication?
Yes. The EJA430E is available with HART 5/HART 7 communication as well as other industrial communication protocols depending on configuration.
Why choose EJA430E instead of a standard pressure transmitter?
The EJA430E combines proven Yokogawa reliability, DPharp digital sensing, long-term stability, and advanced diagnostics, making it suitable for continuous industrial operation.
