Yokogawa AAR181-S50 TC/RTD Input | 100% Original Japan

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Product Overview The Yokogawa AAR181-S50 (Style S2) functions as a high-density, 16-channel isolated temperature input module for the CENTUM VP and ProSafe-RS Distributed Control Systems. This...

SKU: AAR181-S50

Manufacturer: Yokogawa
Product No.: AAR181-S50
Product Type: RTD Input Modules
Product Origin: JAPAN
Payment:T/T, Western Union
Weight: 450g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

Product Overview

The Yokogawa AAR181-S50 (Style S2) functions as a high-density, 16-channel isolated temperature input module for the CENTUM VP and ProSafe-RS Distributed Control Systems. This module captures precise low-level signals from Resistance Temperature Detectors (RTDs) and Thermocouples (TC), converting them into high-fidelity digital data. As a critical component of the Field I/O (FIO) family, the AAR181-S50 provides the robust isolation required to protect the control processor from field-side electrical interference in refineries, power plants, and chemical processing facilities.

Condition: 100% Brand New, Factory Sealed Original.

Part Number Breakdown: AAR181 Series

Yokogawa's suffix logic defines the specific hardware revision and environmental coating options for the AAR181 series.

AAR181: Base Series (RTD/TC Input Module, 16-channel).
-S: Standard type for general industrial environments.
5: High-resolution/enhanced configuration revision.
0: Basic type hardware configuration.
Style S2: Current hardware revision with optimized internal circuitry for heat dissipation.

Technical Specifications

The AAR181-S50 utilizes a 16-bit A/D converter to ensure sub-degree accuracy across a wide thermal range.

Parameter	Specification
Input Channels	16 (Full Channel-to-Channel Isolation)
Signal Input	RTD (Pt100, JPt100) and Thermocouples
A/D Resolution	16-bit High Precision
Accuracy	±0.1% of Full Scale (Typical)
Data Update Period	100 ms
Isolation Strength	2300 V AC (between field and system)
Dimensions	130 × 107.5 × 32.8 mm
Operating Temperature	0°C to +50°C
Country of Origin	Japan

Engineering Advantages

Elimination of Ground Loops: The AAR181-S50 features total channel-to-channel and channel-to-system isolation. This hardware barrier prevents electrical noise or ground potential differences from contaminating neighboring signals, which is vital for accurate monitoring in high-voltage environments.
High-Density Thermal Mapping: By packing 16 isolated channels into a single 32.8 mm slot, this module maximizes rack density. Engineers can monitor an entire reactor's temperature profile using a fraction of the cabinet space required by traditional hardware.
Smart Burnout Diagnostics: The integrated diagnostic engine continuously monitors the integrity of the field wiring. If a sensor fails or a cable breaks, the module immediately flags a burnout condition to the Human Interface Station (HIS), preventing the control loop from acting on erroneous data.
Seamless DCS Integration: Designed specifically for Yokogawa's FIO backplane, the AAR181-S50 supports "hot-swapping" and redundant configurations. This allows technicians to replace modules or expand the system without interrupting live process control.

FAQs

Q: Can I mix RTD and Thermocouple sensors on the same AAR181-S50 module?

A: Yes. You can configure each of the 16 channels independently via the system builder software. This flexibility allows one module to handle a combination of RTD and TC inputs, reducing the spare parts inventory required on-site.

Q: What is the primary benefit of the Style S2 revision?

A: Style S2 indicates a hardware update that improves internal component efficiency and thermal management. It remains fully backward compatible with all S1 backplanes and existing software configurations while offering enhanced long-term reliability.

Q: How does the AAR181-S50 handle lead-wire resistance in RTDs?

A: The module utilizes a 3-wire or 4-wire measurement technique to automatically compensate for lead-wire resistance. This ensures that the distance between the field sensor and the control cabinet does not degrade the accuracy of the temperature reading.

Q: Does this module support ProSafe-RS safety applications?

A: Yes. Yokogawa certifies the AAR181-S50 for use in both CENTUM VP control and ProSafe-RS safety systems, supporting Safety Integrity Level (SIL) requirements when configured within the appropriate safety loop architecture.

What's clients say about us

Excellent Emergency Support!

Our production line was down due to a faulty Bently Nevada monitor. We found it in stock here and they shipped it via DHL immediately. Back in operation within 48 hours—truly a lifesaver for our plant.

Mark Thompson

Maintenance Manager, USA

Reliable Source for New Spares

Finding brand new, original modules is critical for our safety. This team delivers factory-fresh components with full certification. Their commitment to only selling new products makes them our most trusted partner.

Robert Hoffmann

Engineering Lead, Germany

Top-tier Service and Quality

We have sourced Honeywell and Schneider parts here for two years. Every shipment arrives well-packaged with original factory seals intact. Clear communication and the best lead times in the industry.