Yokogawa EJX430A Gauge Pressure Transmitter

1.General Description:

The Yokogawa EJX430A is a high-performance pressure transmitter. It measures the pressure of liquids, gases, or steam accurately. This device works well in tough industrial settings.

The EJX430A is a high-quality gauge pressure transmitter. It uses Yokogawa’s advanced single crystal silicon sensor. Engineers build this sensor to last and design it to offer great long-term stability.

The Yokogawa Pressure Transmitter EJX430A is a gauge pressure transmitter. It sends out a 4 to 20 mA DC analog signal. This signal shows the measured gauge, differential, or absolute pressure. With its advanced digital pressure sensing capabilities and HART® or BRAIN™ communication protocols, users can perform remote setup, calibration, and monitoring efficiently.

Engineers manufacture the EJX430A Yokogawa transmitter using stainless steel parts. The designers created it for high-pressure use.

This ensures it is durable and resistant to corrosion. It performs reliably in tough process environments. It is one of the most trusted Yokogawa pressure transmitters for applications requiring long-term accuracy, safety, and dependability.

2.Yokogawa EJX430A Technical Specifications:

- Measurement Type: Gauge pressure of liquid, gas, or steam  

- Measuring Range: 0.08 to 16 MPa  

- Accuracy: ±0.04% of span (optional ±0.025%)  

- Stability: ±0.1% per 15 years  

- Response Time: 90 milliseconds  

- Output Signal: 4 to 20 mA DC signal  

- Burst Pressure Limit: 69 MPa (10,000 psi)  

- Zero Adjustment Limits: Fully adjustable within capsule range limits  

- Wetted Parts: Stainless steel or Hastelloy C  

- Process Connections: Compatible with standard industrial flanges and threaded fittings  

- Mounting Type: Traditional or direct mount  

- Power Supply: 10.5 – 42 VDC  

- Communication Protocols: BRAIN™, HART®  

- Enclosure Rating: IP66 / IP67  

- Safety Certification: SIL 2/3 by Exida and TÜV

3.Yokogawa EJX430A Features:

l High Performance Pressure Transmitter:

Engineers designed the Yokogawa EJX430A for exceptional accuracy and stability, achieving ±0.04% accuracy with superior long-term performance.

l Single Crystal Silicon Resonant Sensor:

Provides excellent thermal stability, minimal drift, and accurate pressure measurement under varying process conditions.

l Versatile Measurement Capability:

Measures gauge pressure, absolute pressure, or differential pressure, making it ideal for multiple process control applications.

l Digital Pressure Output:

Offers a 4 to 20 mA DC analog signal with superimposed digital communication for precise monitoring and control.

l Rugged Stainless Steel Construction:

Built with stainless steel wetted parts for high corrosion resistance and mechanical strength in extreme environments.

l Advanced Diagnostics and Remote Configuration:

Equipped with digital communication (HART®/BRAIN™) for remote configuration, health monitoring, and advanced diagnostics.

l Safety and Reliability:

SIL 2/3 certified for use in safety instrumented systems, ensuring reliability in critical applications.

l Quick Response and Long-Term Stability:

Delivers a 90 ms response time and maintains ±0.1% stability over 15 years, reducing recalibration frequency.

l Flexible Process Connections:

Compatible with a wide range of process connections, ensuring easy integration with existing systems.

l Signal Characterization:

Features a 10-segment configurable signal characterizer for accurate 4–20 mA output scaling.

4.Yokogawa EJX430A Applications:

The EJX430A Yokogawa transmitter is widely used in various industries for gauge pressure and digital pressure measurement, including:

l Oil and Gas Industry: For wellhead, separator, and pipeline pressure measurement under high pressure conditions.

l Chemical and Petrochemical Plants: For process control of liquid and gas pressures in corrosive environments.

l Power Generation: For steam and boiler pressure monitoring.

l Pharmaceutical and Food Processing: For hygienic applications requiring high accuracy and stability.

l Water Treatment: For precise monitoring of tank and pipeline pressure levels.

5.Installation Procedure:

l Mounting:

Securely mount the pressure transmitter on a stable surface using the proper brackets. Avoid allowing welding currents to pass through the device.

l Process Connection:

Attach the transmitter to the process connections, either flanged or threaded. Ensure that you seat all gaskets correctly to prevent leaks.

l Wiring:

Follow the wiring diagram provided in the user manual. Ensure correct polarity for the 24 VDC power supply and 4–20 mA signal loop.

l Diaphragm Seal Installation:

For differential or absolute pressure measurement, install diaphragm seals on the appropriate pressure ports, ensuring proper alignment.

l Zero and Range Adjustment:

Perform a zero point calibration and configure the measuring range using a HART® communicator or BRAIN™ terminal.

l Final Verification:

After installation, check that the transmitter’s pressure sensors respond correctly to pressure. Also, make sure the output signal matches.

6.Related Part Numbers:

l EJX430A – Standard model Gauge Pressure Transmitter

l EJA110A / EJA115E / EJA118 – Related Yokogawa pressure transmitters for differential applications

l EJX530A – Advanced variant for extended measuring range and high-pressure use

Yokogawa EJA510A Absolute Pressure Transmitter

EJX110A Differential Pressure Transmitter

7.Summary:

The Yokogawa EJX430A Gauge Pressure Transmitter is a high-quality device. Perfect for accurate and dependable pressure measurement of liquids, gases, and steam.

The Yokogawa pressure transmitter EJX430A combines a single crystal silicon sensor and stainless steel parts. It has a 4–20 mA DC digital output.

This design ensures long-term stability, high accuracy, and durability in tough conditions and high pressure. One of the most advanced pressure transmitters in Yokogawa’s EJX series. It provides excellent performance and reliability for industrial automation systems.