The Yokogawa EJA115E Low Flow Transmitter is a differential pressure transmitter designed specifically for accurate measurement of very low flow rates in industrial processes. It combines an integral flow orifice with Yokogawa’s advanced DPharp digital sensor to deliver stable and reliable flow measurement. In addition, the transmitter supports multiple digital communication protocols for easy integration into modern control systems.

Typical Applications:
• Low flow measurement in chemical processing
• Gas flow monitoring in pipelines
• Pilot plants and laboratory process systems
• Utility flow monitoring in industrial facilities
• Process optimization and control systems

Not Recommended For:
• Applications requiring standard high-flow measurement
• Installations where a dedicated flow meter is already used for large pipelines

EJA115E Low Flow Transmitter

Selection Notes

• Confirm the expected flow range to ensure the transmitter is suitable for low-flow measurement.
• Select the appropriate orifice bore size based on process conditions and pipe dimensions.
• Choose the required output signal, such as 4–20 mA with HART® communication.
• Verify compatibility with the plant control system or flow computer.
• In addition, confirm that pressure ratings and certifications meet installation requirements.

Why Choose the Yokogawa EJA115E Low Flow Transmitter

• Optimized for Low Flow Measurement
The EJA115E integrates an integral flow orifice (IFO) with a differential pressure transmitter. This design improves measurement accuracy in very low flow applications.

• High Measurement Accuracy
The transmitter offers approximately ±0.055% square-root output accuracy, ensuring reliable flow measurement for demanding industrial processes.

• Advanced DPharp Digital Sensor
Yokogawa’s DPharp sensor technology delivers excellent stability and repeatability. As a result, the transmitter maintains accurate readings over long operating periods.

• Fast Response and Long-Term Stability
With response times as low as 90 ms and stability of about ±0.1% per 10 years, the transmitter supports reliable long-term operation in process plants.

• Multiple Communication Options
The device supports HART®, FOUNDATION Fieldbus, PROFIBUS PA and BRAIN protocols. Therefore, it integrates easily with modern distributed control systems.

FAQ

Q: What makes the EJA115E suitable for low flow measurement?
A: The transmitter integrates a differential pressure sensor with an integral flow orifice, allowing accurate measurement of very small flow rates.

Q: What output signals are available?
A: The EJA115E typically provides 4–20 mA output with HART communication, and it can also support digital protocols such as FOUNDATION Fieldbus and PROFIBUS PA.

Q: Can the transmitter measure variables other than flow?
A: Yes. In addition to flow derived from differential pressure, the transmitter can also monitor static pressure through digital communication.

Q: Which industries commonly use the EJA115E?
A: The transmitter is widely used in chemical plants, gas processing facilities, research plants and other industrial processes requiring accurate low-flow measurement.