Overview
The Yokogawa EJA430A gauge pressure transmitter is a high-performance pressure sensor designed to measure liquid, gas, or steam pressure. The EJA430A is the Traditional-mount Gauge Pressure Transmitter in the series. The EJA-A series is Yokogawa’s most successful pressure transmitter line, first released in 1991, with an installed base of over 4-1/2 million EJA-A transmitters worldwide. It outputs a 4 to 20 mA DC signal corresponding to the measured gauge pressure.
Key Features
- DPharp digital sensor offers the performance and device intelligence needed to get greater insight into your process.
- 4 to 20 mA DC output with remote setup and monitoring through communications with the BRAIN terminal, CENTUM CS, µXL, or HART 275 host.
- DPharp active sensor and rugged construction allow users to run their plants safer and with less downtime, offering long-term stability and diagnostics to make maintenance easy.
- The EJA series uses a sensor formed from monocrystal silicon, a perfect material which has no hysteresis in pressure or temperature changes.
- Style S2 traditional-mount configuration with proven field reliability across chemical, oil & gas, water, and process manufacturing.
Technical Specifications
Measurement span options include 0.03 to 3 MPa (0.3 to 30 kgf/cm², 4.3 to 430 psi, 0.3 to 30 bar) or 0.14 to 14 MPa (1.4 to 140 kgf/cm², 20 to 2000 psi, 1.4 to 140 bar). Traditional-mounting features 1/4–18 NPTF process connections (1/2–14 NPTF with process adapters) on 2-1/8″ centers.
Typical Applications
- Gauge pressure monitoring in process automation and control systems
- Liquid, gas, and steam pressure measurement in industrial pipelines
- Chemical processing, oil & gas, water treatment, and manufacturing plants
- Remote pressure monitoring and diagnostics via BRAIN, CENTUM, HART protocols
- Pressure-sensitive process control requiring long-term stability
Compatibility & Replacements
Compatible With
- BRAIN terminal and communication protocols
- CENTUM CS and µXL control systems
- HART 275 host systems
- 4–20 mA DC industrial control systems and PLCs
- Standard impulse piping (vertical, horizontal, or remote)
Replaces / Drop-In Replacement For
- Legacy EJA430A variants and field-mounted gauge pressure transmitters with similar pressure ranges
- Verify compatibility with your system integrator before ordering for specific model cross-references.
Works With
- BRAIN protocol remote monitoring and setup
- CENTUM and µXL DCS platforms
- HART protocol digital communication
- Standard 4–20 mA DC instrumentation and data acquisition systems
- Impulse piping networks for remote or pressure-equalized installations
