Yokogawa EJX-A
±0.025%（部分量程） accuracy | 200:1 turndown | SIL 2（IEC 61508）
Key Specifications
| Brand | Yokogawa |
|---|---|
| Model | EJX-A |
| Category | pressure_transmitter |
| Measuring principle | 硅谐振（DPharp™） |
| Pressure type | 表压+绝压+差压 |
| Accuracy | ±0.025%（部分量程） |
| Turndown ratio | 200:1 |
| Long-term stability | ±0.1% / 15 年 |
| Wetted materials | 316L SST / 哈氏合金 C-276 / 钽（隔膜） |
| Max static pressure | 250 bar（最高工作压力） |
| Response time | 可调，毫秒级 |
| Communication protocol | HART / FF |
| Output signal | 4-20 mA HART / FF |
| SIL rating | SIL 2（IEC 61508） |
| Explosion protection | Ex ia IIC T4 / Ex d IIC T6（ATEX/IECEx/NESI） |
| IP rating | IP66/IP67 |
| Ambient temperature | -40 ~ +85 °C |
| Warranty | 标准厂商保修 |
| _batch_note | 压力变送器批次 raw —— 2026-08-16 调研核验。数据源：emerson.com 官网 PDS、yokogawa.com 官网 GS。置信度：Emerson/Yokogawa 为官方一手；4051S 为 2026 新平台已核验。 |
Data Sources
- Product page: https://www.yokogawa.com/cn/solutions/products-and-services/measurement/pressure/
- Datasheet: https://www.yokogawa.com/library/gs-ejxa/
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