Parameters & Specifications
Category Specification
Model Code EJA438W
Type All-Welded, Remote Seal Differential Pressure / Pressure Transmitter
Measuring Range (URL) Various options. A common range is URL = 500 kPa (e.g., 5 - 500 kPa). The exact URL is defined by the range code in the model suffix.
Accuracy ±0.2% of URL (Accuracy is specified inclusive of the effects of the welded seal system).
Remote Seal System Integrated and all-welded. No internal gaskets or o-rings. Capillaries are also welded.
Seal Diaphragm Material Selectable based on process media; common materials include SUS316L, Hastelloy C-276, Monel, Tantalum.
Process Connection Directly welded to the process. Connection type (e.g., NPT thread, socket weld) is defined by the seal design.
Output Signal 4 to 20 mA DC, two-wire with digital overlay using HART® 5/7/8 protocol. BRAIN and FOUNDATION Fieldbus are also available.
Power Supply 10.5 to 55 V DC for 4-20 mA HART
(16.4 to 55 V DC for communication)
Sensor Technology Single-Crystal Silicon Resonant Sensor
Turn-Down Ratio 15:1
Response Time Faster than oil-filled seal systems due to direct pressure transmission.
Stability ±0.1% of URL per 10 years (typical)
Process Temperature -50 to 400 °C (-58 to 752 °F) or higher.
The primary advantage: no fill fluid to vaporize, allowing for much higher temperatures.
Ambient Temperature -50 to 80 °C (-58 to 176 °F)
Static Pressure Limit Up to 42 MPa (6090 psi).
Protection Rating IP67 (NEMA 4X)
Electrical Connection 1/2-14 NPT Conduit connection
Display Standard. Integral LCD indicator with local zero/span adjustment buttons.
Diagnostics Comprehensive self-diagnostics for hardware and configuration errors.
Safety Certifications Available with SIL 2/3 (Functional Safety) certification and international explosion-proof approvals (ATEX, IECEx, FM, CSA).