Parameters
Parameter Category Specification for EJA118N
Model Number EJA118N
Product Name Differential Pressure/Pressure Transmitter with Remote Seals
Sensor Technology Silicon Resonant Sensor.
Measurement Type • Differential Pressure
• Gauge Pressure (if low-side seal is vented to atmosphere)
Output Signal • Standard: 4 to 20 mA DC, 2-wire system, with HART protocol (Bell 202 FSK) superimposed.
• Digital: BRAIN or HART protocol for 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 (Includes the combined accuracy of the transmitter and the remote seals).
Remote Seal Options A wide variety of seal types, materials, and capillary lengths are available (defined by additional suffix codes):
• Seal Types: Flanged, threaded, saddle-type, etc.
• Diaphragm Materials: 316L SST, Hastelloy C-276, Tantalum, Monel, etc.
• Fill Fluids: Silicone oil, Fluorocarbon, Halocarbon, etc. (selected based on process temperature)
• Capillary Length: Can be ordered in standard lengths (e.g., 1.5m, 3m, 5m, 7.5m)
Process Temperature Limit Limited by the fill fluid in the remote seal system.
• Standard Silicone Oil: -10 to 200°C (14 to 392°F)
• High-Temp Fluids: Up to 400°C (752°F) with specific fill fluids.
Ambient Temperature • -40 to 85°C (-40 to 185°F) (for the transmitter body)
Materials of Construction • Transmitter Housing: Aluminum die-cast with epoxy coating.
• Remote Seal Materials: Vast selection (SS316, Hastelloy, etc.) to match process compatibility.
Display (Optional) • Local Indicator: A digital display (LCD) can be added.
Adjustments • Zero and Span: Adjustable via the local buttons or a HART/BRAIN communicator.