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EJA430E-JAS4J

The Yokogawa EJA430E-JAS4J is a flange-mounted differential pressure transmitter from the high-performance EJA-E Series. It is engineered for level, density, and differential pressure measurement in a wide range of industrial processes, including oil & gas, chemical, power, and water treatment.

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Specifications
Category Specification
Model Code EJA430E-JAS4J
Type Flange-Mounted Differential Pressure (DP) Transmitter
Measuring Range Range Code J: 0.5 to 10 kPa (2.0 to 40 inH₂O)
*Note: The URL (Upper Range Limit) is 10 kPa. The span is field-adjustable within this limit.*
Flange Standard JIS 10K (Japanese Industrial Standard)
Flange Size & Rating 3-inch (80 mm), 10K
Flange Material JIS S25C Carbon Steel
Process Connection Dual flanges (High & Low sides) with internal silicone oil fill.
Wetted Parts SUS316L Stainless Steel (Membrane, O-rings)
Accuracy ±0.055% of URL (for spans between 3.5 to 10 kPa)
±0.075% of URL (for spans between 0.5 to 3.5 kPa)
Output Signal 4 to 20 mA DC, two-wire with digital overlay using HART® 5/7 protocol.
Power Supply 10.5 to 42 V DC (Standard)
16 to 42 V DC (Required for HART communication)
Sensor Technology Single-Crystal Silicon Resonant Sensor
Reference Conditions Accuracy is stated at ambient temperature of 25°C (77°F), atmospheric pressure, and with gravity aligned.
Turn-Down Ratio 100:1
Response Time 90 ms (can be adjusted from 0.6 to 64 seconds via software)
Stability ±0.1% of URL per 10 years (typical)
Process Temperature -40 to 120 °C (-40 to 248 °F)
Ambient Temperature -40 to 85 °C (-40 to 185 °F)
Storage Temperature -50 to 85 °C (-58 to 185 °F)
Relative Humidity 0 to 100% RH
Pressure Limit Working Pressure: 16 MPa (2320 psi) for JIS 10K flanges.
Static Pressure Limit: Up to 16 MPa (2320 psi).
Protection Rating IP67 (NEMA 4X)
Electrical Connection 1/2-14 NPT Conduit connection
Display Optional (Not included by default. A field-mountable local indicator with push buttons is available).
Diagnostics Comprehensive self-diagnostics for hardware, module communication, and configuration errors.
Safety Certifications Typically certified to international standards such as IECEx, ATEX, FM, CSA, and SIL 2/3 (Functional Safety). The exact certifications depend on the order specification and must be verified on the product nameplate.
Weight Approximately 9.5 kg (20.9 lbs) - varies with flange option.
Key Features & Benefits
High Accuracy & Stability: The resonant sensor technology provides industry-leading performance, minimizing measurement drift over time.

Robust Construction: Designed to withstand harsh process conditions, including high static pressure and wide temperature swings.

JIS Flange Standard: Directly compatible with piping and vessels using Japanese Industrial Standard flanges.

Easy Integration & Configuration: Standard 4-20mA HART output allows for easy connection to control systems, and configuration can be done via the local indicator (if equipped) or a HART communicator.

Comprehensive Diagnostics: Built-in diagnostics enhance plant safety and reduce maintenance time by providing early warnings of potential issues.