The Yokogawa AAR145-S50 is a 16-channel input module engineered to provide high-accuracy resistance measurement for both RTD (Resistance Temperature Detector) and potentiometer (POT) inputs. Designed for use with Yokogawa’s CENTUM VP and other compatible control systems, this module offers consistent performance in industrial environments requiring precise temperature and resistance monitoring.

By accommodating multiple RTD types and offering channel-to-channel isolation, the AAR145-S50 serves as a critical component in process control strategies where reliability, scalability, and long-term stability are required. Its robust design ensures continuous operation even in challenging conditions such as high vibration or electrical noise, making it a reliable choice for process automation in sectors like oil & gas, power generation, chemical, and pharmaceuticals.

Product Specifications

Applications

The Yokogawa AAR145-S50 is widely used in various industrial settings requiring accurate temperature and resistance monitoring:

• Oil & Gas Industry: For measuring temperatures in refining and petrochemical processes.

• Power Generation: Monitors winding and bearing temperatures in turbines and generators.

• Chemical & Pharmaceutical Plants: Ensures precise temperature control during reactions and synthesis.

• Food & Beverage Industry: Maintains optimal processing temperatures for safety and quality.

• Water Treatment Facilities: Tracks environmental temperatures in filtration and chlorination units.

• Pulp & Paper Industry: Measures temperature in digesters and dryers for product consistency.

Product Advantages

• High Channel Density: 16 input channels in a single module reduces cabinet space and wiring complexity.

• Flexible Input Types: Supports multiple RTD and POT inputs without the need for reconfiguration.

• Electrical Isolation: Each channel is isolated from others, reducing the risk of signal interference or grounding loops.

• Reliable Performance: Designed for stable operation in electrically noisy and harsh industrial environments.

• Seamless Integration: Fully compatible with Yokogawa’s distributed control systems for plug-and-play scalability.

• Long Service Life: Built using high-quality components with low drift for long-term measurement stability.

• Minimal Maintenance: Self-diagnostic capabilities and robust construction reduce the need for frequent servicing.

• International Certification: Ensures compliance with global safety and environmental standards.

Frequently Asked Questions (FAQ)

1. What RTD types are compatible with the AAR145-S50?

   The module supports Pt100, JPt100, Cu10, Cu53, and similar standard RTD elements.

2. Can I mix RTD and POT inputs on the same module?

   Yes, each channel is individually configurable to accept either RTD or POT input.

3. Is the module hot-swappable?

   No, the AAR145-S50 should only be inserted or removed with the power turned off to avoid damage.

4. Does the module require calibration?

   Factory calibration is sufficient in most cases, but periodic verification is recommended for critical applications.

5. What are the isolation specifications of the channels?

   Each input channel is isolated from every other channel and from ground, enhancing signal integrity.

6. What kind of connector does the module use?

   The module plugs into a Yokogawa terminal base unit, which provides wiring terminals for field connections.

7. Can this module be used with non-Yokogawa systems?

   It is specifically designed for Yokogawa systems; integration with other systems is not officially supported.

8. Is there a software tool for configuration?

   Yes, configuration is typically performed through Yokogawa’s engineering tools such as PRM or Control Builder.

9. Does the module support HART communication?

   No, the AAR145-S50 is an input module for analog signals and does not include HART capabilities.

10. What happens if a sensor fails or disconnects?

    The module detects open circuits and can flag faults to the control system for operator attention.