EJA440E

EJA440E Overview

The EJA440E gauge pressure transmitter from Yokogawa Electric Corporation is a high-performance device designed for measuring liquid, gas, or steam pressure with precision and reliability. Utilizing a single crystal silicon resonant sensor, this transmitter is equipped to handle a variety of industrial applications with ease. The product outputs a 4 to 20 mA DC signal that corresponds to the measured pressure, ensuring compatibility with a wide range of control and monitoring systems.

Key Features

Advanced Sensor Technology: The Yokogawa EJA440E Pressure Transmitter employs a single crystal silicon resonant sensor for accurate and stable pressure measurements.

Versatile Communication Options: With support for BRAIN or HART communications, the transmitter allows for remote setup and monitoring, enhancing the ease of operation.

Self-Diagnostics: The device performs self-diagnostics to detect CPU failure, hardware failure, configuration errors, and over-range errors, ensuring system integrity.

Safety Certification: The EJA-E series models are SIL 2 certified for safety requirements, except for Fieldbus, PROFIBUS, and Low Power types, providing a reliable safety standard for critical applications.

EJA440E Gauge Pressure Transmitter Technical Specifications

Measurement Range

C Span: 5 to 32 MPa (720 to 4500 psi)

D Span: 5 to 50 MPa (720 to 7200 psi)

Detailed lower and upper limit values for each range.

Reference Accuracy

Percentage accuracy for both measurement spans C and D, along with the corresponding URL (Upper Range Limit).

Ambient Temperature Effects

The impact of temperature changes on measurement accuracy, including the compensated temperature range.

Stability

Percentage stability over a specified period, detailing expected changes over 10 or 15 years.

Power Supply

Recommended supply voltage range and type, such as 24 V DC.

Output Signal

The output range for the 4 to 20 mA DC signal, including the corresponding current values.

Load Capacity

Maximum external load resistance and requirements for communication protocols.

Vibration Effects

Stability of the output under different vibration frequencies and displacements.

Mounting Position Effects

Zero drift and compensation measures when the device is installed in various positions.

Response Time

Time taken for the device to reach a stable output.

Housing Material

Materials used for the housing and connectors, such as 316 SST or aluminum alloy.

Degree of Protection

Protection ratings such as IP66/IP67.

Temperature Range

Operating ranges for both ambient and process temperatures.

Installation and Configuration

Mounting Position Effects: The Yokogawa EJA440E Pressure Transmitter is designed to be insensitive to rotation in the diaphragm plane and can be tilted up to 90 degrees without significant zero shift.

Zero Adjustment: The device allows for external zero adjustment with a continuous range and 0.01% incremental resolution of span.

Integral Indicator: The transmitter features a 5-digit numerical display, 6-digit unit display, and bar graph for easy visualization of pressure variables.

Communication and Output

Output Signal: The EJA440E provides a two-wire 4 to 20 mA DC output with digital communications, programmable for linear or square root output.

Failure Alarm: The transmitter includes a failure alarm that indicates output status at CPU failure and hardware error, ensuring prompt detection of issues.

Safety and Certification

SIL Certification: The EJA-E series is certified as complying with SIL 2 for safety requirements, ensuring a high level of safety in operation.

Reliability Data: The reliability data varies depending on hardware and software revisions, with detailed information available in the Functional Safety Data Sheet.

Applications for EJA440E Gauge Pressure Transmitter

Process Control in Manufacturing: The product is ideal for monitoring and controlling pressures in manufacturing processes, such as in the pharmaceutical, paper, and textile industries, where precise pressure maintenance is crucial for product quality.

HVAC Systems: In heating, ventilation, and air conditioning systems, the transmitter can be used to ensure optimal air pressure for efficient operation and to maintain comfort levels in buildings.

Oil and Gas Pipelines: Due to its high performance and wide measurement range, the product is suitable for monitoring pressures in oil and gas pipelines, where it can help detect leaks and maintain the integrity of the pipeline network.

Water Treatment Plants: By monitoring the strain in the water supply lines, the communication device helps treatment plants make sure there is sufficient pressure to supply consumers with fresh water.

Power Plants: The EJA440E can be utilized in power generation facilities to monitor the steam pressure in burners and generators, which can improve the generation of electricity and security.

Contact Us

For all your industrial automation and instrumentation needs, Shaaxi ZYY is the go-to destination. Our expertise lies in providing top-tier products from esteemed brands such as Emerson, Rosemount, Yokogawa, Endress+Hauser, Azbil, Fisher, Honeywell, ABB, and Siemens. With over ten years in the industry, we have cultivated a deep understanding of the market and a commitment to excellence.

Our inventory is comprehensive, ensuring that we can match you with the perfect instrument for your application. From precision pressure transmitters to advanced control systems, we are here to offer you not just products, but a partnership in your pursuit of operational excellence.

Ready to discuss your project or need a quote? Reach out to us at lm@zyyinstrument.com. We're here to help with any questions you might have and to provide you with the information you need to make informed decisions.

Connect with us today and let's work together to enhance your industrial processes with reliable and innovative solutions.