Yokogawa FLXA21
pH / ORP / 电导率 / 电阻率 / 电磁式电导率 / 溶解氧 | 双检测器（最多连 2 检测器） | 无（标准型）
Key Specifications
| Brand | Yokogawa |
|---|---|
| Model | FLXA21 |
| Category | Process Analyzers |
| Measured parameters | pH / ORP / 电导率 / 电阻率 / 电磁式电导率 / 溶解氧 |
| Channels | 双检测器（最多连 2 检测器） |
| Sensor technology | 兼容模拟及数字传感器 |
| pH range | 0.00 ~ 14.00 pH（内置校准标准表） |
| Conductivity range | 0.01 μS/cm ~ 2000 mS/cm（电导池常数 0.005~50 cm⁻¹） |
| Dissolved oxygen range | 0 ~ 50 mg/L（ppm） |
| Accuracy | 溶解氧 ±0.05 ppm |
| Power supply | 两线制 24V 回路供电 |
| Communication protocol | HART / FF / PA |
| SIL rating | 无（标准型） |
| Explosion protection | ATEX / IECEx / FM / CSA / NEPSI 本安 |
| IP rating | IP66 / NEMA 4A / CSA 3S |
| Self-diagnostics | pH 阻抗/不对称电位/斜率持续诊断（电极脏污/损坏预警）、近 5 次校准记录 |
| Regulatory standards | USP 645（制药纯水） |
Data Sources
- Product page: https://www.yokogawa.com/cn/solutions/products-and-services/measurement/liquid-analysis/
- Datasheet: https://www.yokogawa.com/cn/solutions/products-and-services/measurement/liquid-analysis/
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