The Yokogawa AAR181 is a high-precision RTD (Resistance Temperature Detector) input module designed for industrial automation and process control systems. It converts temperature signals from multiple RTD sensors into reliable digital data for distributed control systems (DCS), enabling accurate process monitoring and loop control. With robust isolation and support for standard RTD connections, the AAR181 ensures stable, high-integrity temperature measurements, helping optimize system performance and enhance operational safety in demanding industrial environments.
Technical Specifications
| Feature | Specification |
|---|---|
| Model | Yokogawa AAR181 |
| Module Type | RTD Input Module |
| Number of Input Channels | 12 isolated channels |
| Supported Input Signals | RTD (e.g., Pt100, 3-wire) |
| Input Voltage Range | ±5 V DC |
| Measurement Current | 1 mA per channel |
| Isolation | Channel-to-channel and channel-to-system |
| Accuracy | ±120 mΩ (typical RTD measurement) |
| Operating Temperature Range | −20 °C to +60 °C |
| Mounting Type | DIN Rail / System Carrier |
| Dimensions (W×H×D) | 130 mm × 107.5 mm × 32.8 mm |
| Weight | 0.20 kg |
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