YOKOGAWA AAR181-S00 S2 Analog Input Module | Replacement, Equivalent & Selection Guide
The YOKOGAWA AAR181-S00 S2 is a high-precision analog input module designed for use in YOKOGAWA CENTUM DCS systems. This page provides full technical specifications, compatible replacement and equivalent models, application guidance, and sourcing information to help engineers and procurement teams make confident selection decisions.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number (SKU) | AAR181-S00 S2 |
| Manufacturer | YOKOGAWA Electric Corporation |
| Module Type | Analog Input Module |
| Series | CENTUM VP / CENTUM CS 3000 |
| Input Signal | 4–20 mA DC (standard), voltage input options available |
| Number of Channels | 8 channels (isolated) |
| Resolution | 16-bit |
| Isolation | Channel-to-channel and channel-to-bus isolation |
| Communication Bus | YOKOGAWA V-net / ER Bus |
| Power Supply | 24 V DC (supplied via backplane) |
| Operating Temperature | 0 °C to 55 °C |
| Storage Temperature | -25 °C to 70 °C |
| Humidity | 5% to 95% RH (non-condensing) |
| Approvals / Certifications | CE, UL (verify with current datasheet) |
| Weight | Approx. 6,280 g (packaged) |
Compatible Replacement & Equivalent Models
The following models are commonly evaluated as replacements or equivalents for the AAR181-S00 S2. Always verify electrical and firmware compatibility before substitution.
| Model | Manufacturer | Compatibility Notes |
|---|---|---|
| AAR181-S00 S1 | YOKOGAWA | Earlier hardware revision; functionally equivalent in most applications |
| AAR181-S10 | YOKOGAWA | Extended I/O variant; confirm backplane slot compatibility |
| AAI141-S00 | YOKOGAWA | 4-channel AI module; use when channel count reduction is acceptable |
| AAI841-S00 | YOKOGAWA | 8-channel AI with HART; drop-in for HART-enabled loops |
| AAR181-S00 S3 | YOKOGAWA | Newer revision; backward compatible in CENTUM VP R6+ |
Contact [email protected] for cross-reference verification before ordering.
Why Choose the Original Model
- Guaranteed firmware compatibility with existing CENTUM VP / CS 3000 configurations
- No re-engineering required — direct slot replacement with zero wiring changes
- Validated calibration data preserved across module swap
- OEM traceability for regulated industries (pharma, oil & gas, power generation)
- Reduced commissioning risk compared to third-party equivalents
Typical Applications
- Oil & gas upstream/downstream process control
- Chemical and petrochemical plant DCS systems
- Power generation and utilities monitoring
- Pharmaceutical batch process control
- Pulp, paper, and food & beverage manufacturing
- Water treatment and environmental monitoring systems
System Compatibility
- YOKOGAWA CENTUM VP (R4.01 and above recommended)
- YOKOGAWA CENTUM CS 3000 (R3.x series)
- YOKOGAWA ProSafe-RS (verify safety-rated slot requirements separately)
- Compatible with standard YOKOGAWA I/O backplanes and field terminal assemblies
Selection Guide
Use the following criteria to confirm the AAR181-S00 S2 is the correct module for your application:
- Channel count: Confirm 8 analog input channels are required.
- Signal type: Verify field instruments output 4–20 mA (or compatible voltage range).
- HART requirement: If HART pass-through is needed, consider AAI841-S00 instead.
- DCS revision: Match hardware suffix (S1 / S2 / S3) to your CENTUM system version.
- Slot type: Confirm backplane slot type (standard I/O vs. enhanced I/O nest).
- Redundancy: If redundant AI is required, verify pair configuration with YOKOGAWA engineering.
Quality Assurance & Sourcing
- All units sourced through verified industrial supply channels
- Pre-shipment inspection: visual, label, and functional checks
- Original manufacturer packaging preserved where available
- Traceability documentation available on request
- Warranty: 90-day replacement guarantee on all stocked units
- Export compliance: ECCN / HTS classification available upon request
How to Order
- Add to cart directly on this page, or
- Email [email protected] with your PO or RFQ, or
- Call / WhatsApp: +0086 19859288691
- Provide: part number AAR181-S00 S2, quantity, required delivery date, and destination country
- Lead time: typically 3–7 business days for stocked units; 2–4 weeks for sourced units
Replacement & Compatibility FAQ
Q: Can I replace AAR181-S00 S1 with AAR181-S00 S2 without reconfiguration?
A: In most CENTUM VP systems, yes. The S2 revision is backward compatible. Confirm with your DCS engineer before hot-swap.
Q: Is the AAR181-S00 S2 compatible with HART instruments?
A: Standard AAR181 does not support HART pass-through. Use AAI841-S00 for HART-enabled loops.
Q: Do you supply refurbished or new units?
A: We supply both. All listings are clearly marked. Contact us to specify your preference.
Q: Can you provide a certificate of conformance (CoC)?
A: Yes, CoC and inspection reports are available upon request for all orders.
Q: What is the lead time for urgent orders?
A: In-stock units ship within 1–2 business days. Contact us for expedited freight options.
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