Yokogawa Eja530a Gauge Pressure Transmitter

What is the Yokogawa EJA530A?

The EJA530A is one of Yokogawa’s DPharp EJA-A series pressure transmitters. Specifically intended to measure gauge pressure, it delivers excellent performance, long-term stability, and robustness necessary in field applications. It measures relative pressure to atmospheric pressure and transforms it into an output signal from 4 to 20 mA, optionally coupled with a HART, BRAIN, or FOUNDATION Fieldbus communication option.

Key Features

1. Excellent Accuracy and Stability
The EJA530A has a reference accuracy of ±0.055% of span, providing accurate measurements. Long-term stability is equally impressive, with a ±0.1% drift over 10 years, minimizing the need for regular recalibration.

2. Durable Construction
Built to operate in extreme conditions, it provides superior resistance to overpressure, vibration, and temperature changes. The transmitter comes in a range of materials and housings, such as stainless steel and aluminum, to suit your site conditions.

3. Digital Performance with DPharp Technology
At its heart is Yokogawa’s DPharp sensor—a revolutionary resonant silicon sensor that offers digital accuracy and a quick response time. In contrast to analog sensors, the DPharp possesses self-diagnostic functions and offers continuous monitoring of sensor health.

4. Versatile Communication Protocols
The EJA530A accommodates various communication standards like HART 5/7, BRAIN, and FOUNDATION Fieldbus. This facilitates seamless integration with current systems and control structures.

5. Simple Maintenance and Configuration
The transmitter features Yokogawa’s FieldMate software and handheld communicator compatibility for simple setup, calibration, and diagnostics. Its intuitive display module is rotatable and can be configured for improved field readability.

Technical Specifications

Measurement Type: Gauge Pressure

Accuracy: ±0.055% of span

Stability: ±0.1% of URL for 10 years

Output Signal: 4-20 mA with digital communication (HART/BRAIN/Fieldbus)

Power Supply: 10.5 to 45 VDC

Process Temperature Range: -40 to 120°C

Pressure Range: Varies by model; up to 25 MPa (3625 psi)

Ingress Protection: IP66/IP67

Mounting: 2-inch pipe mounting or direct flange mounting

Applications

Oil & Gas:
Applied in upstream, midstream, and downstream operations for pump pressure monitoring, pipeline integrity, and safety systems.

Power Generation:
Suited for boiler pressure monitoring, steam lines, and turbine control where accuracy and ruggedness are needed.

Water Treatment:
Senses pump and filter pressures to provide clean and safe water supply.

Pharmaceuticals & Chemicals:
Ensures consistency in reactor conditions and batch processing with consistent data input.

Pulp & Paper:
Manages slurry or corrosive media while providing accurate measurement during pressure-critical production stages.

Why Use the EJA530A?

Reliability: Field-proven performance in thousands of installations worldwide.

Cost Savings: Lower maintenance and recalibration requirements.

Digital Intelligence: Sophisticated diagnostics reduce unplanned failures.

Environmental Resistance: Thrives in harsh process and environmental conditions.