Yokogawa EJX530A Gauge Pressure Transmitter

1.General Description

The Yokogawa EJX530A is a high-performance pressure transmitter. It measures absolute and gauge pressure accurately. This device works well for liquids, gases, and steam in industrial settings.

The Yokogawa Pressure Transmitter EJX530A is part of the DPharp series. It uses a special silicon sensor. This sensor provides great stability, accuracy, and long-lasting performance.

This In-Line Mount Gauge Pressure Transmitter gives a 4 to 20 mA DC analog output signal. This signal shows the measured gauge pressure or absolute pressure. Engineered with stainless steel wetted parts, it offers superior corrosion resistance and durability for use in harsh process environments.

The Yokogawa DPharp EJX530A allows remote setup and monitoring using HART® or BRAIN™ communications. It has complete self-diagnostics and is intrinsically safe. This makes it perfect for use in hazardous areas.

The Yokogawa Model EJX530A is a strong choice for modern process automation systems. It has a wide measuring range and high accuracy.

2.Yokogawa EJX530A Technical Specifications

l TypeGauge Pressure / Absolute Pressure

l Sensor TypeSingle Crystal Silicon Resonant Sensor

l Reference Accuracy±0.04% of span

l Stability±0.1% of URL (Upper Range Limit) per 10 years

l Response Time90 milliseconds

l RangeabilityA Capsule: 25:1; B, C, D Capsules: 50:1

l Burst Pressure (Absolute)A/B/C: 4,350 psi (30 MPa); D: 19,100 psi (132 MPa)

l Output Signal4 to 20 mA DC with digital communication

l Power Supply Voltage10.5 to 42 VDC (general use and flameproof type)

l Load Resistance0 to 1290 Ω (Output signal code D/E)

l Communication ProtocolsBRAIN™ / HART®

l Enclosure RatingIP66 / IP67

l Construction MaterialStainless steel body and wetted parts

l Mounting TypeIn-Line Mount

l CertificationsExida & TÜV SIL 2/3, Intrinsically Safe Certified

3.Yokogawa EJX530A Features

l High Performance and Accuracy

The Yokogawa EJX530A accuracy rating of ±0.04% of span ensures precise measurement even under dynamic process conditions.

l Single Crystal Silicon Resonant Sensor

Provides exceptional long-term stability, fast response, and superior resistance to temperature and pressure effects.

l Dual Functionality

Operates as both an absolute and gauge pressure transmitter, making it versatile for diverse industrial needs.

l Fast Response Time

Responds in just 90 ms, enabling precise control in fast-changing processes.

Rugged Stainless Steel Construction

Built with stainless steel wetted parts to withstand harsh environments and corrosive media.

l Remote Configuration and Monitoring

Allows for remote setup, response monitoring, and calibration via HART communications or BRAIN interface.

l Intrinsic Safety and SIL Certification

Certified as intrinsically safe and SIL 2/3 compliant, ensuring maximum reliability in safety-critical systems.

l Self-Diagnostics

Provides automatic detection of transmitter health, wiring faults, and abnormal process conditions.

l In-Line Mount Design

The In-Line Mount Gauge Pressure Transmitter configuration simplifies installation and maintenance.

l Wide Measuring Range

Handles various pressure sensors and measuring ranges, making it ideal for differential, absolute, and gauge applications.

4.Yokogawa EJX530A Applications

The EJX530A Yokogawa pressure transmitter is great for measuring liquid, gas, or steam pressure. It works in many industries, such as:

l Oil and Gas Production – Accurate pressure sensors for high-pressure pipelines and separators.

l Chemical and Petrochemical – Corrosion-resistant pressure transmitters for process control.

l Power Generation – Gauge pressure measurement for steam and boiler systems.

l Water and Wastewater Treatment – Monitoring of pump and filtration pressures.

l Pharmaceutical and Food Industries – Hygienic and intrinsically safe pressure transducers for level and process control.

5.Installation Procedure

A. Precautions:

Review the official Yokogawa EJX530A installation manual and safety instructions before setup.

B. Model Verification:

Check the model name, suffix codes, and Yokogawa EJX530A specifications on the transmitter nameplate.

C. Selecting Installation Location:

Install in an area free from excessive vibration, extreme temperature, or electromagnetic interference for accurate measurement and stability.

D. Mounting:

Secure the In-Line Mount Gauge Pressure Transmitter using approved mounting brackets or process flanges.

E. Process Piping Installation:

Ensure proper alignment of process connections and use compatible gaskets to prevent leakage.

F. Wiring:

Connect external wiring to the terminal box, ensuring proper grounding and compliance with intrinsic safety requirements.

G. Power and Load Check:

Verify that the power supply voltage (10.5–42 VDC) and load resistance meet specifications.

H. Operation and Calibration:

Turn on the device. Then, do a zero-point adjustment. Use HART® communications or BRAIN™ interface to configure and verify.

6.Yokogawa EJX530A Related Part Numbers

l EJX530A – Standard model In-Line Mount Gauge Pressure Transmitter

l EJA530E – Related model for gauge pressure with similar specifications

l EJX430A – High-performance Gauge Pressure Transmitter with flange mount option

l EJA510E – Absolute Pressure Transmitter variant for high static pressure environments

Yokogawa EJA220A Flange Installation Pressure Transmitter

Yokogawa EJA510A Absolute Pressure Transmitter

7.Summary

The Yokogawa EJX530A Pressure Transmitter is a high-performance device. You can mount it in-line, and it measures gauge and absolute pressure. It uses a single crystal silicon resonant sensor for accurate, stable, and reliable pressure readings.

The Yokogawa DPharp EJX530A offers ±0.04% accuracy and ±0.1% long-term stability. It has intrinsic safety certification and a 4–20 mA DC digital output. This makes it perfect for measuring differential, gauge, or absolute pressure. Suitable for industries like oil and gas, power, and chemical processing.

With stainless steel construction, HART communications, and fast response, the EJX530A Yokogawa model ensures consistent and accurate process performance under demanding industrial conditions.