The Yokogawa EJA110E Differential Pressure Transmitter is part of Yokogawa's EJA-E series of DPharp pressure transmitters and is designed for reliable differential pressure measurement in demanding industrial process applications. It is suitable for measuring the differential pressure of liquids, gases, and steam, as well as for flow, liquid level, density, and pressure applications.
At the heart of the EJA110E is Yokogawa's DPharp single-crystal silicon resonant sensor. Unlike conventional analog sensing technologies, the digital sensor directly processes the measured pressure information and enables the transmitter to compensate for the effects of static pressure and sensor temperature. This dynamic compensation helps maintain measurement accuracy when process conditions change.
The EJA110E provides a reference accuracy of ±0.055% of span, a response time of approximately 90 ms, and 100:1 rangeability. Its long-term stability is specified at ±0.1% of URL per 10 years, while the overpressure effect is specified at ±0.03% of URL. These characteristics make the transmitter suitable for applications where measurement stability and fast process response are important.
In addition to differential pressure, the EJA110E can measure static pressure as a secondary variable using the same sensor. Static pressure can be displayed locally or monitored remotely through the transmitter's digital communication interface, providing additional process information without requiring a separate pressure transmitter.
The EJA110E is available with several communication configurations, including 4–20 mA DC with BRAIN or HART 5/HART 7, FOUNDATION Fieldbus, PROFIBUS PA, and a low-power 1–5 V DC output with HART 7. This allows the transmitter to be integrated into a variety of industrial control and instrumentation systems.
The available measurement spans cover a broad range, from low differential pressures through higher-pressure applications. Depending on the selected capsule, the EJA110E supports measurement spans from 0.5 kPa up to 14 MPa, with corresponding range limits and configuration options.
Key Features
- Differential pressure transmitter with Yokogawa DPharp technology
- Suitable for liquid, gas, and steam measurement
- Applications include flow, level, density, and pressure measurement
- Reference accuracy up to ±0.055% of span
- Optional high-accuracy configuration available
- 90 ms response time
- 100:1 rangeability
- Long-term stability of ±0.1% of URL per 10 years
- Measures differential pressure and static pressure
- Dynamic compensation for pressure and temperature effects
- Multiple measurement capsules and pressure ranges
- HART 5/HART 7 communication
- BRAIN communication
- FOUNDATION Fieldbus option
- PROFIBUS PA option
- Low-power 1–5 V DC with HART 7 option
- Remote setup and configuration through digital communication
- Advanced self-diagnostics
- Standard configurations available with SIL 2 safety certification; applicable configurations support higher SIL capability
- Industry-standard IEC 61518 process connection dimensions
- Local indicator option for process variables and diagnostic information
Typical Applications
- Differential pressure measurement
- Flow measurement
- Liquid level measurement
- Density measurement
- Process pressure monitoring
- Steam flow measurement
- Liquid and gas flow measurement
- Filter and equipment differential pressure monitoring
- Industrial process control
- Power generation
- Oil and gas processing
- Chemical and petrochemical plants
- Water and wastewater treatment
