Yokogawa 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.