Yokogawa AAR181-S00 – Multi-Type RTD Input Module | CENTUM VP / CS 3000 DCS Platform
Engineering Background
The AAR181-S00 is a field-proven RTD (Resistance Temperature Detector) input module engineered by Yokogawa for deployment within the CENTUM VP and CS 3000 Distributed Control System platforms. Designed to meet the rigorous demands of continuous process industries, this module delivers high-accuracy temperature measurement with robust signal conditioning directly at the I/O tier — eliminating the need for external transmitters in many loop configurations.
Product Positioning
Targeting process control engineers and instrumentation specialists in refining, petrochemical, power generation, and pharmaceutical facilities, the AAR181-S00 occupies the critical interface between field RTD sensors and the DCS controller. Its multi-type RTD compatibility and galvanic isolation make it the preferred choice for brownfield upgrades and greenfield CENTUM VP installations alike.
Complete Technical Specifications
- Model: AAR181-S00
- Manufacturer: Yokogawa Electric Corporation
- Module Type: RTD (Resistance Temperature Detector) Input Module
- Compatible Platform: CENTUM VP, CENTUM CS 3000
- Number of Input Channels: 4 channels (isolated)
- Supported RTD Types: Pt100, Pt200, Pt500, Pt1000 (IEC 60751); JPt100 (JIS C 1604); Cu10, Ni100, Ni120
- Measurement Range: –200 °C to +850 °C (type-dependent)
- Accuracy: ±0.1 °C (typical, at reference conditions)
- Resolution: 0.01 °C
- Input Connection: 2-wire / 3-wire / 4-wire RTD
- Isolation: Channel-to-channel and channel-to-bus galvanic isolation
- Power Supply: Supplied via CENTUM VP I/O bus backplane
- Operating Temperature: 0 °C to +60 °C
- Storage Temperature: –25 °C to +70 °C
- Humidity: 5% to 95% RH (non-condensing)
- Dimensions (W × H × D): Per CENTUM VP I/O module standard form factor
- Weight: Approx. 300 g
- Certifications: CE, UL/cUL (verify with current Yokogawa datasheet)
- Country of Origin: Japan
Proven Application Environments
- Oil & Gas Refining: Reactor bed temperature profiling, heat exchanger monitoring
- Petrochemical Plants: Distillation column temperature gradient measurement
- Power Generation: Turbine bearing and steam temperature monitoring
- Pharmaceutical Manufacturing: Sterilization cycle validation (21 CFR Part 11 environments)
- Pulp & Paper: Dryer section temperature control
- Food & Beverage: Pasteurization and CIP process temperature loops
Engineering Advantages
- Multi-Type RTD Flexibility: Single module supports Pt100, JPt100, Cu10, Ni100/120 — reduces spare-parts inventory complexity
- 3-Wire Lead Resistance Compensation: Eliminates measurement error from long cable runs without external compensation hardware
- Per-Channel Galvanic Isolation: Prevents ground loop interference in multi-sensor installations across different potential zones
- Hot-Swap Capable: Module replacement without process shutdown when used with CENTUM VP redundant I/O architecture
- Integrated Diagnostics: Open-circuit, short-circuit, and out-of-range detection with DCS alarm propagation
- High EMC Immunity: Designed to IEC 61000 standards for electrically noisy industrial environments
System Architecture & Signal Flow
The AAR181-S00 mounts directly onto the CENTUM VP I/O node nest. Field RTD sensors connect via the terminal board (sold separately, e.g., ATB series). The module performs analog-to-digital conversion and linearization on-board, transmitting engineering-unit values over the CENTUM VP I/O bus to the Field Control Station (FCS). Configuration — including RTD type selection, range, and alarm setpoints — is performed entirely within CENTUM VP Builder software, requiring no hardware jumpers or DIP switches.
Sourcing & Quality Verification
- All units sourced through verified industrial automation supply channels
- Pre-shipment inspection: visual, label verification, and functional power-on check
- Original Yokogawa firmware and hardware — no third-party modifications
- Traceability documentation available upon request (batch records, test reports)
- Packaging: anti-static bag + foam-lined carton; original OEM packaging where available
Procurement Process
- Submit your RFQ via support@konmask.com or add to cart directly
- Receive stock confirmation and lead time within 1 business day
- Pro-forma invoice issued; payment via T/T, PayPal, or trade terms for qualified accounts
- Export documentation (commercial invoice, packing list, COO) provided for international shipments
- Shipping via DHL / FedEx / UPS Express; sea freight available for bulk orders
Technical FAQ
Q: Is the AAR181-S00 compatible with CENTUM CS 3000?
A: Yes. The module is backward-compatible with CS 3000 I/O node architecture. Confirm nest and FCS firmware version with your Yokogawa system integrator.
Q: Can I mix RTD types across the 4 channels?
A: RTD type is configured per-channel in CENTUM VP Builder, so different RTD types can be assigned to each of the 4 channels independently.
Q: What terminal board is required?
A: The AAR181-S00 pairs with Yokogawa ATB series terminal boards. Specify your wiring configuration (2/3/4-wire) when ordering.
Q: Do you provide a warranty?
A: All units carry a 90-day functional warranty from Konmask.com. Extended warranty and on-site commissioning support available upon request.
Q: Can I request a certificate of conformance?
A: Yes. COC and inspection reports are available for quality-critical procurement. Contact us with your PO reference.
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