Yokogawa EJA110E Differential Pressure Transmitter
1. Overview of Yokogawa EJA110E
The Yokogawa EJA110E Differential Pressure Transmitter is a high-quality device. It provides great accuracy and reliability. This transmitter also offers long-term stability for industrial use. As part of the renowned Yokogawa pressure transmitter family, the Yokogawa EJA110E transmitter builds upon decades of engineering excellence.
It has a single-crystal silicon resonant sensor. This is a significant advancement in pressure sensor design. It provides better accuracy and resists long-term drift.
This silicon resonant sensing element works well even in high-temperature and high-pressure conditions. This makes the Yokogawa EJA110E differential pressure transmitter one of the most reliable instruments in its class.
The Yokogawa model EJA110E measures differential pressure, flow, and level for liquid, gas, or steam pressure applications. It changes process variables into a standard 4–20 mA DC output signal. This signal works with HART, FOUNDATION Fieldbus, and PROFIBUS PA protocols. This transmitter is a key component in Yokogawa’s differential pressure transmitters line, offering high performance, long-term stability, and intelligent diagnostics.
The DTM Yokogawa EJA110E interface supports seamless integration into advanced process automation and control systems, ensuring optimal compatibility with PLC, DCS, and SCADA environments.
2. What is a Differential Pressure Transmitter?
A differential pressure transmitter (DP transmitter) measures the pressure difference (ΔP) between two points in a process. The Yokogawa DP transmitter EJA110E converts the pressure difference into a standard 4–20 mA DC output signal. This signal shows real-time process conditions.
Perfect for measuring pressure in pipelines, vessels, and tanks. It can measure liquid, gas, or steam flow, fluid levels, and filter conditions. The pressure transmitter Yokogawa EJA110E maintains exceptional accuracy under variable pressure and temperature conditions.
3. Understanding Gauge and Differential Pressure
Gauge Pressure: Measures pressure relative to atmospheric pressure.
Differential Pressure: Measures the difference between two process pressures.
In industrial systems, Yokogawa differential pressure transmitters are important for accurate flow measurement. They help with level detection and filtration monitoring. These devices reduce errors caused by temperature changes or environmental variations.
4. Key Features of Yokogawa EJA110E
l Ultra-Precise Measurement and Reliable Data
l Advanced Technology: The Yokogawa transmitter EJA110E uses single crystal silicon resonant sensor technology, offering precision accuracy up to ±0.055% (and ±0.04% optional).
l Wide Range Application: Ideal for liquid, gas, and steam pressure measurement across process industries.
l Accuracy and Repeatability: Converts differential and static pressures directly into digital signals, eliminating analogue drift and enhancing process stability.
l Long-Term Stability and Durability
l Long-Term Stability: Maintains ±0.1% accuracy over 10 years, reducing recalibration frequency and maintenance costs.
l High Performance in Harsh Environments: Withstands extreme temperatures, corrosive media, and high static pressures up to 3,600 psi.
l Real-Time Compensation: Automatically corrects temperature effects and static pressure fluctuations to maintain accurate readings.
l Fast Response for Real-Time Control
l Rapid Response: The Yokogawa flow transmitter EJA110E has a response time of 90ms. It gives quick feedback for dynamic process control applications.
l Seamless System Integration
l Supports HART 5/7, FOUNDATION Fieldbus, PROFIBUS PA, BRAIN, and DTM Yokogawa EJA110E configuration tools.
l Designed for integration with distributed control systems (DCS) and programmable logic controllers (PLCs) for intelligent monitoring and control.
5. Technical Specifications
l Model: Yokogawa EJA110E
l Type: Differential Pressure Transmitter
l Sensor: Single-crystal silicon resonant sensor
l Accuracy: ±0.055% (standard), ±0.04% (optional)
l Output Signal: 4–20 mA DC with digital communication (HART/Fieldbus/Profibus)
l Power Supply: 10.5–32V DC
l Temperature Range: Ambient: -29°C to +80°C | Process: -20°C to +80°C
l Maximum Working Pressure: 2,300 psi (standard), 3,600 psi (optional)
l Wetted Parts: 316 SST, Hastelloy C, or gold-plated options for corrosive fluids
l Long-Term Stability: 0.1% per 10 years
l Communication Protocols: HART, BRAIN, FOUNDATION Fieldbus, PROFIBUS PA
l Mounting: Compatible with IEC61518 flanged design and manifold assemblies
6. Applications of Yokogawa EJA110E
The pressure transmitter Yokogawa EJA110E is trusted across industries requiring precise differential pressure measurement:
l Oil & Gas: Flow, level, and pressure control for pipelines and separators.
l Power Generation: Monitoring steam pressure and condensate level.
l Chemical & Petrochemical: Reactor, tank, and process line measurement.
l Water & Wastewater Treatment: Monitor filter differential pressure and flow rate.
l Pharmaceutical & Food Processing: Hygienic pressure and level monitoring under controlled conditions.
The Yokogawa EJA110E level transmitter also supports accurate tank level monitoring in pressurised systems using hydrostatic pressure differentials.
7. Installation and Maintenance
l Preparation:
Verify operating environment and ensure compatibility with process media.
Inspect wetted parts for corrosion resistance before installation.
l Mounting:
Mount vertically using appropriate brackets to minimise vibration impact.
Use corrosion-resistant fasteners in high-temperature or humid conditions.
l Electrical Connections:
Connect to a 24V DC source and verify proper polarity.
Isolate signal wiring from power lines to reduce electrical noise.
l Calibration:
Perform Yokogawa EJA110E calibration using a HART communicator or DTM software.
Confirm 4–20 mA DC output accuracy and zero/span alignment.
l Maintenance:
Check for leaks, corrosion, and electrical continuity.
Apply periodic recalibration to maintain optimal pressure measurement accuracy.
8. Troubleshooting and Diagnostics
**Symptom** | **Possible Cause** | **Corrective Action**
No output signal | Power loss or wiring error | Check the DC supply and terminal polarity.
Drifted readings | Temperature variation | Turn on auto temperature compensation.
Unstable signal | Electrical interference | Use shielded cables and ensure proper grounding.
Abnormal reading | Blocked impulse lines | Clean or flush the pressure lines.
Communication error | DTM or HART mismatch | Update the DTM for Yokogawa EJA110E software.
9. Related Yokogawa Models
l EJA110E: Standard model for differential pressure, flow, and level measurement.
l EJA120E: Low differential pressure transmitter for micro ΔP applications.
l EJX110A: Ultra-high-performance DP transmitter with 0.04% accuracy.
l Yokogawa Flow Transmitter EJA110E: Specialised for flow measurement with orifice and venturi tubes.
10. Conclusion
The Yokogawa EJA110E differential pressure transmitter represents the next evolution in Yokogawa’s pressure transmitter technology. With its single-crystal silicon sensor, this device offers long-term stability and high performance. It works well under extreme pressure and temperature. It provides accurate and reliable pressure measurements for liquids, gases, and steam
More items, please refer to the following:
Yokogawa EJA510A Absolute Pressure Transmitter
Yokogawa YTA110 Temperature Transmitter
BACk to the Top: https://www.ymzdcs.com/product/yokogawa/
