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EJA430A-DA

The Yokogawa EJA430A-DA is an Absolute Pressure (AP) Transmitter from the flagship EJA Series. It is designed to measure pressure relative to a perfect vacuum (absolute zero pressure).
This model is particularly configured for low absolute pressure ranges. The -DA suffix is a key identifier for its specific measurement range. Like all EJA transmitters, it utilizes Yokogawa's proprietary Silicon Resonant Sensor technology, providing exceptional accuracy, stability, and reliability for critical process measurements in various industries.

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Parameter Category Specification for EJA430A-DA
Model Number EJA430A-DA
Product Name Absolute Pressure Transmitter
Sensor Technology Silicon Resonant Sensor.
Measurement Type Absolute Pressure (Referenced to a vacuum sealed inside the sensor capsule).
Measurement Range (Suffix -DA) 0 to 100 kPa (0 to 1000 mbar, 0 to 40 inH₂O, 0 to 1.45 psi)
This is a typical low absolute pressure range for the -DA code.
Output Signal • Standard: 4 to 20 mA DC, 2-wire system, with HART protocol (Bell 202 FSK) superimposed.
• Digital: BRAIN or HART protocol for full configuration and diagnostics.
Power Supply Loop-powered.
• Operating Voltage: 10.5 to 42 V DC (Standard)
• Load Resistance: 0 to 1375 Ω (at 42 V DC)
Accuracy ±0.2% of span (for this specific low range).
Long-Term Stability ±0.1% of URL per 10 years, ensuring minimal drift and reduced maintenance.
Temperature Effect ±0.15% of URL per 10°C (combined effect on zero and span).
Process Connection • Standard: 1/4" NPT female or JIS 10R (1/4" G) male thread.
• Alternatives: Other connections available via suffix codes.
Electrical Connection • 1/2" NPT conduit connection.
• Plug-in terminal block for easy wiring.
Materials of Construction • Wetted Parts: 316L SST, Hastelloy C-276 (depending on suffix codes).
• Housing: Aluminum die-cast with epoxy coating.
Display (Optional) • Local Indicator: Integral LCD display (can be added as an option).
Ambient Temperature • -40 to 85°C (-40 to 185°F)
Process Temperature • -40 to 120°C (-40 to 248°F) (for general purpose)