Yokogawa EJA530E Gauge Pressure Transmitter

1.General Description

The Yokogawa EJA530E is a high-performance pressure transmitter. Engineers design it to measure the pressure of liquids, gases, and steam in industrial settings.

People also call the EJA530E Yokogawa the Yokogawa Pressure Transmitter EJA530E. Part of Yokogawa’s DPharp transmitter series. This series uses digital resonant sensor technology. This technology provides high accuracy, reliability, and long-term stability.

The EJA530E Absolute and Gauge Pressure Transmitter sends out a 4 to 20 mA DC signal. This signal is proportional to the measured gauge or absolute pressure. Yokogawa’s DPharp digital sensor provides accurate measurements. It has a fast response time and reliable performance in high pressure and temperature.

This Gauge Pressure Transmitter supports HART® 5/7 and BRAIN™ communication protocols, enabling remote configuration, calibration, and monitoring. The Yokogawa Model EJA530E is perfect for important industrial processes. It works well in oil and gas, chemical, power, water, and pharmaceutical industries. This model provides reliable digital pressure measurement and stable output signals.

2.transmitter yokogawa eja530e Technical Specifications

l Model: Yokogawa EJA530E Pressure Transmitter

l Mounting Type: EJA530E In-Line Mount Gauge Pressure Transmitter

l Measurement Type: Gauge and Absolute Pressure

l Measured Media: Liquid, gas, or steam

l Accuracy: ±0.055% of span (standard); ±0.04% of span (with HAC option)

l Stability: ±0.1% of URL per 10 years

l Response Time: 90 milliseconds

l Output Signal: 4 to 20 mA DC with digital communication (HART® 5 / HART® 7)

l Measurement Span (Capsule): 0.5 to 10 MPa (72.5 to 1450 psi)

l Process Connection: ½-inch NPT female

l Wetted Parts Material: Hastelloy C-276 (diaphragm, process connector, and others)

l Power Supply Voltage: 10.5–42

3.pressure transmitter yokogawa eja530 Features

l Exceptional Accuracy and Stability:

The Yokogawa Transmitter EJA530E offers top accuracy of ±0.055% of span. With the /HAC high-accuracy option, it achieves ±0.04%. This ensures reliable readings in various operating conditions.

l Advanced DPharp Digital Sensor Technology:

The Yokogawa DPharp Transmitter EJA530E uses a monocrystal silicon resonant sensor that provides a highly stable and repeatable digital signal for precise pressure measurements.

l Long-Term Reliability:

The EJA530E Yokogawa Pressure Transmitter maintains ±0.1% stability over 10 years, reducing maintenance and recalibration intervals.

l Fast Dynamic Response:

A 90 ms response time ensures real-time tracking of pressure fluctuations, critical for process control applications.

l Comprehensive Measurement Capability:

Functions as both a Gauge Pressure Transmitter and an Absolute Pressure Transmitter. It can measure the pressure of liquids, gases, or steam accurately.

l Rugged and Corrosion-Resistant Construction:

Built with Hastelloy C-276 wetted parts, the Yokogawa Pressure Transmitter EJA530E withstands corrosive media and high process temperatures.

l Smart Communication and Diagnostics:

Supports remote setup, calibration, and diagnostics via HART® or BRAIN™ interfaces, simplifying maintenance and integration.

l Stable Output Signal:

It produces a 4 to 20 mA DC analog signal. This signal stays stable even with changing environmental conditions. This ensures accurate process control.

4.Applications of the EJA530E Yokogawa Pressure Transmitter

Liquid Pressure Measurement: Monitoring tank levels and pump discharge pressures.

Gas Pressure Measurement: Controlling gas distribution and compressor discharge pressure.

Steam Pressure Measurement: Power plant boiler monitoring and steam flow systems.

Process Industries include oil and gas, chemicals, petrochemicals, food and beverages, and water treatment systems. These industries need accurate digital gauge pressure monitoring.

5.Installation Procedure

l Model and Specification Check:

Verify the Yokogawa Model EJA530E nameplate to ensure correct configuration and measurement range.

l Select Installation Location:

Choose an area free of vibration, with minimal temperature variation, and accessible for wiring and maintenance.

l Process Connection:

Install using the ½-inch NPT female process connection. Ensure tight sealing using appropriate gaskets and thread sealant.

l Wiring and Grounding:

Connect external wiring to the terminal box according to the wiring diagram. Ensure proper grounding to avoid electrical interference.

l Power Supply and Output:

Use a power supply that gives 10.5 to 42 VDC. Check that the output signal (4–20 mA DC) works within the set load resistance limits.

l Configuration and Calibration:

Use a HART® communicator or BRAIN™ terminal to configure range, damping, and units of measurement.

l Functional and Leak Testing:

Pressurize the process line to check for leaks and verify the transmitter’s output and response.

6.Related Part Numbers

l EJA530E – In-line mount Gauge Pressure Transmitter

l EJA510E – Absolute Pressure Transmitter version

l Yokogawa EJX530A – Enhanced performance variant with faster response and higher accuracy

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