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Overview
The Yokogawa EJX110A-EHS5G-917DB/FF1/D1/X2/HC/A is a high-precision differential pressure transmitter from Yokogawa’s EJX‑A series. Engineered for critical process measurements, it delivers reliable, stable readings for liquid, gas, or steam flows, as well as level, density, and pressure monitoring. Its advanced DPharp resonant sensor ensures superior long-term stability and fast response.
Key Features
- High-Accuracy Measurement: ±0.04% of span ensures precise process control.
- Rapid Response: 90 ms response time allows real-time monitoring.
- Advanced Sensor Technology: DPharp single-crystal silicon sensor provides enhanced reliability and low drift.
- Multi-Protocol Communication: Supports HART, BRAIN, and FOUNDATION Fieldbus.
- Built-in Diagnostics: Self-check and configurable high/low pressure alarm outputs.
- Versatile Applications: Flow (with orifice plates), liquid level, and density calculations.
- Hazardous Area Compliance: ATEX, IECEx, FM, and CSA certifications available.
Technical Specifications
| Attribute | Details |
|---|---|
| Sensor Type | Single-crystal silicon resonant sensor (DPharp) |
| Measured Media | Liquid, Gas, Steam |
| Output Signal | 4–20 mA DC with HART/BRAIN/FF options |
| Accuracy | ±0.04% of span |
| Response Time | 90 ms |
| Static Pressure Measurement | Integral indicator or remote |
| Power Supply | 10.5–42 V DC |
| Operating Temperature | –40 °C to +85 °C (electronics) |
| Process Temperature | –40 °C to +120 °C (higher with optional upgrades) |
| Communication Protocols | HART, BRAIN, FOUNDATION Fieldbus |
| Diagnostics | Self-diagnostics, pressure alarms |
| Dimensions | 120 × 150 × 200 mm |
| Weight | 1 kg |
Applications
- Oil & Gas: Flow and pressure monitoring in pipelines.
- Chemical: Level and density measurement in tanks and reactors.
- Power Generation: Steam and water flow control.
- Water Treatment: Liquid level measurement and pressure control.
FAQ
Q: Can this transmitter be used for high-temperature processes?
A: Standard process temperature is –40 °C to +120 °C, with optional upgrades for higher ranges.
Q: Which communication protocol is recommended?
A: HART is standard; FOUNDATION Fieldbus is ideal for networked DCS integration.
Q: How does this model differ from the EJX310A series?
A: EJX110A offers higher accuracy (±0.04%) and faster response time (90 ms) compared to standard models, making it suitable for critical process loops.
