{"product_id":"aar181-s50-yokogawa-rtd-input-module-12-channel","title":"AAR181-S50 Yokogawa RTD Input Module 12-Channel","description":"\u003ch2\u003e\u003cstrong\u003eYokogawa AAR181-S50 – 12-Channel Isolated RTD Input Module\u003c\/strong\u003e\u003c\/h2\u003e\n\u003ch3\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Yokogawa Electric Corporation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e \u003cstrong\u003eAAR181-S50\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e RTD Input Module (Isolated)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Input Channels:\u003c\/strong\u003e 12 isolated channels (CH1 to CH12)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput Signal Type:\u003c\/strong\u003e RTD Pt100 (3-wire type)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplicable Standards:\u003c\/strong\u003e JIS C1604:1997 and IEC751:1995\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAllowable Input Voltage:\u003c\/strong\u003e ±5 V (maximum input range)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWithstanding Voltage:\u003c\/strong\u003e 1500 V AC for 1 minute between input and system\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput Resistance (Power ON):\u003c\/strong\u003e 2 MΩ or larger\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput Resistance (Power OFF):\u003c\/strong\u003e 2 MΩ or larger\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccuracy (RTD):\u003c\/strong\u003e ±120 mΩ\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAllowable Total Wiring Resistance:\u003c\/strong\u003e 40 Ω or less per wire\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasurement Current (RTD):\u003c\/strong\u003e 1 mA (constant current excitation)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Drift:\u003c\/strong\u003e ±120 mΩ \/ 10 °C for RTD input\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eData Update Period:\u003c\/strong\u003e 1 second (fixed cycle)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBurn-out Detection:\u003c\/strong\u003e Configurable per module (UP\/DOWN selection)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBurn-out Detection Time:\u003c\/strong\u003e 60 seconds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Current Consumption:\u003c\/strong\u003e 450 mA at 5 V DC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e Approximately 0.2 kg (lightweight design)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExternal Connection:\u003c\/strong\u003e Pressure clamp terminal (direct wiring)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eKey Functional Features\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuffix Code -S:\u003c\/strong\u003e Standard type for general RTD measurement applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuffix Code 5:\u003c\/strong\u003e No explosion protection – suitable for non-hazardous areas.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuffix Code 0:\u003c\/strong\u003e Basic type with standard feature set.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3-Wire RTD Support:\u003c\/strong\u003e Eliminates lead wire resistance errors for accurate readings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChannel Isolation:\u003c\/strong\u003e Each of the 12 channels is independently isolated from the system.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBurn-out Detection:\u003c\/strong\u003e Detects sensor or wiring failures and drives output UP or DOWN.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual-Redundant Ready:\u003c\/strong\u003e Supports system redundancy for critical temperature loops.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions (FAQ)\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: What RTD types does the AAR181-S50 support?\u003c\/strong\u003e\u003cbr\u003eA: The \u003cstrong\u003eAAR181-S50\u003c\/strong\u003e supports Pt100 (100 Ω at 0 °C) in a 3-wire configuration per JIS and IEC standards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: How does the burn-out detection work on this module?\u003c\/strong\u003e\u003cbr\u003eA: You can set burn-out per module to UP or DOWN. The module detects an open circuit or broken sensor within 60 seconds.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: What is the total resistance limit for RTD wiring?\u003c\/strong\u003e\u003cbr\u003eA: The allowable total resistance per wire (including sensor and lead wires) is 40 Ω or less for guaranteed accuracy.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: Can I use this module with 2-wire RTD sensors?\u003c\/strong\u003e\u003cbr\u003eA: The \u003cstrong\u003eAAR181-S50\u003c\/strong\u003e is optimized for 3-wire connections. For 2-wire sensors, you must short the INA and INC terminals externally.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: What is the data update rate for temperature readings?\u003c\/strong\u003e\u003cbr\u003eA: The module updates all 12 channel data every 1 second in normal operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: Does this module support redundant system configurations?\u003c\/strong\u003e\u003cbr\u003eA: Yes, the \u003cstrong\u003eAAR181-S50\u003c\/strong\u003e works with Yokogawa's dual-redundant architecture for critical process loops.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: How do I compensate for accuracy when measuring below 0 °C?\u003c\/strong\u003e\u003cbr\u003eA: Multiply the specified RTD accuracy (±120 mΩ) by coefficient K based on the thermoelectromotive force ratio at the measured temperature.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"margin-top: 20px;\"\u003e\u003cstrong\u003eContact Information Inquiries:\u003c\/strong\u003e \u003ca href=\"mailto:sales@nex-auto.com\"\u003esales@nex-auto.com\u003c\/a\u003e , \u003ca href=\"https:\/\/wa.me\/8615392429628\"\u003e+86 153 9242 9628\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePartner NexAuto Technology Limited :\u003c\/strong\u003e \u003ca href=\"https:\/\/www.nex-auto.com\/\"\u003ehttps:\/\/www.nex-auto.com\/\u003c\/a\u003e\u003c\/p\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":46870786408609,"sku":"AAR181-S50","price":219.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0673\/5390\/3265\/files\/AAR181-S50.jpg?v=1786515339","url":"https:\/\/www.autonexcontrol.com\/products\/aar181-s50-yokogawa-rtd-input-module-12-channel","provider":"AutoNex Controls Limited ","version":"1.0","type":"link"}