Yokogawa AAR181-S00 S2 RTD Input Module

The Yokogawa AAR181-S00 S2 is a high-performance 8-channel RTD input module, engineered to deliver accurate and stable resistance temperature detection within distributed control systems. As part of Yokogawa’s field-proven I/O family, this module is specifically built to interface with RTD sensors like Pt100, JPt100, and others, ensuring highly accurate temperature measurements across various industrial applications.

With its advanced signal isolation, robust architecture, and high channel resolution, the AAR181-S00 S2 supports reliable operation in demanding process environments such as power generation, chemical plants, and oil & gas refineries. The “S2” revision denotes an updated firmware/hardware set with enhanced reliability and extended system compatibility.

Product Specifications

Product Applications

The AAR181-S00 S2 is ideal for precision temperature monitoring and control in the following industries:

• Power Plants: For temperature monitoring of turbine shafts, bearings, and heat exchangers.

• Oil & Gas Facilities: Used in distillation columns, compressor stations, and safety-critical temperature monitoring.

• Chemical Manufacturing: Critical for controlling temperature-sensitive reaction vessels and storage tanks.

• Pharmaceuticals: Ensures GMP-compliant temperature data in cleanroom and sterilization environments.

• Food & Beverage: Maintains quality and safety in cooking, pasteurization, and fermentation processes.

• Water Treatment: Tracks environmental conditions and equipment temperature for optimized operations.

Product Advantages

• High Accuracy: Ensures precise temperature measurement, improving process control quality and reducing waste.

• Channel Isolation: Prevents electrical interference, allowing stable multi-point measurement.

• Scalable Integration: Easily integrated into Yokogawa DCS systems for centralized monitoring and control.

• Flexible Sensor Compatibility: Supports multiple RTD types with customizable range settings.

• Robust Industrial Design: Operates reliably in harsh conditions including temperature fluctuations and high humidity.

• Reduced Downtime: Built-in diagnostics and fault detection minimize troubleshooting time.

• Compact Footprint: High channel density in a small module saves control cabinet space.

• Firmware Stability (S2): Enhanced software version ensures reliable long-term operation with Yokogawa’s latest DCS platforms.

Frequently Asked Questions (FAQ)

1. What RTD sensor types can be connected to the AAR181-S00 S2?

   The module supports Pt100, JPt100, Cu10, and Cu53 RTDs, among others.

2. How many RTD sensors can be connected simultaneously?

   The module supports up to 8 RTD sensors, one per channel.

3. Is this module compatible with CENTUM VP?

   Yes, it is fully compatible with Yokogawa CENTUM VP and ProSafe-RS systems.

4. What does the “S2” suffix indicate?

   It indicates a second-generation or updated version of the module, with firmware and reliability improvements.

5. Can this module detect sensor disconnection?

   Yes, open-circuit detection is supported, and it will generate system alarms for operator action.

6. Does the module offer hot-swapping?

   No. For safety and system integrity, modules should be inserted or removed only with power off.

7. What is the default scan interval?

   The default scan time is typically 100 milliseconds.

8. Is field calibration required?

   Factory calibration is generally sufficient, though users may perform periodic verification.

9. How is the wiring configured for 3-wire or 4-wire RTD sensors?

   The terminal base supports standard 3-wire or 4-wire configurations with proper terminal mapping.

10. Does it support redundant operation?

    Yes, when installed within a Yokogawa redundant I/O system, the module supports fault-tolerant configuration.