Product Introduction
Yokogawa AAR181-S50 is a reliable 12-channel isolated RTD input module designed for industrial automation systems. This standard type S50 module delivers precise temperature data processing for complex plant environments. Engineers trust this PLC input unit for high channel density and robust electrical isolation. The AAR181 series integrates smoothly into existing control racks to ensure stable operations.
Technical Specifications
| Parameter | Specification Detail |
| Brand | Yokogawa |
| Model | AAR181-S50 |
| Module Type | RTD Input Module (Isolated) |
| Input Channels | 12 channels, fully isolated |
| Supported Sensors | Pt100 (3-wire type), JIS C1604:1997, IEC751:1995 |
| Measurement Accuracy | ±120 mΩ for RTD inputs |
| Measurement Current | 1 mA constant current |
| Allowable Input Voltage | ±5 V maximum |
| Withstanding Voltage | 1500 VAC between input and system for 1 minute |
| Input Resistance | 2 MΩ or larger (Power ON and OFF) |
| Signal Source Resistance | 40 Ω or less per wire |
| Temperature Drift | ±120 mΩ per 10 degrees Celsius |
| Data Update Period | 1 second per scan cycle |
| Current Consumption | 450 mA at 5 V DC |
| Module Weight | 0.2 kg compact design |
Installation & Wiring Guide
- Mount the AAR181-S50 securely into the designated Yokogawa control base rack.
- Ensure wiring resistance for INA and INC signal cables is identical.
- Connect signal cables using the secure pressure clamp terminal block.
- Verify all terminal connections before turning on system power.
Commissioning, Maintenance & Diagnostics
- Configure burn-out detection settings together for all twelve active channels.
- Monitor the standard 60-second burn-out detection time during live testing.
- Set burn-out response to UP or DOWN states based on safety needs.
- Apply temperature compensation coefficient K when measuring below 0 degrees Celsius.
Compatibility & Certifications
- Fully compatible with standard Yokogawa control system racks.
- Designed for general industrial automation environments.
- Standard type unit built with no explosion protection features.
Package Contents & Warranty
- One Yokogawa AAR181-S50 RTD Input Module.
- Backed by a solid 12-month warranty from date of purchase.
- Standard industrial protective packaging.
Shipping Methods
- Fast global dispatch via FedEx, UPS, and DHL.
- Secure tracking provided for all international orders.
Typical Application Scenarios
- Chemical plant temperature monitoring loops.
- Oil and gas process control skids.
- Power generation turbine thermal tracking.
- Manufacturing furnace temperature regulation.
Frequently Asked Questions
What sensors connect to this module?
The unit accepts 3-wire Pt100 RTD sensors following JIS and IEC standards.
Does the unit support burnout detection?
Yes, burn-out detection is available with a 60-second response time.
How are field wires attached?
Field wiring connects via an integrated pressure clamp terminal.
Why Buy From Oiltech Controls?
- 15+ years industrial automation spare parts experience
- Global shipment support
- Tested industrial surplus and refurbished options
- 12-month warranty
- Technical verification before shipment
Contact Information Inquiries:
Email: info@oiltechcontrols.com
Phone/WhatsApp: +86 158 8020 0923
Copyright © 2026 Oiltech Controls Limited. All rights reserved.
Original Source: https://www.oiltechcontrols.com/
Reviews
There are no reviews yet.