{"product_id":"yokogawa-aar181-s50-centum-vp-rtd-input-module","title":"Yokogawa AAR181-S50 CENTUM VP RTD Input Module","description":"\u003ch2\u003eYokogawa AAR181-S50 RTD Input Module\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eYokogawa AAR181-S50\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eAAR181\u003c\/strong\u003e RTD Input Module, operates as a dedicated hardware component for isolated temperature signal acquisition within Yokogawa CENTUM CS 3000 \/ VP DCS field control stations. It accepts inputs directly from resistance temperature detectors (RTD), thermocouples, and millivolt sources across 12 channels.\u003c\/p\u003e\n\u003ch3\u003eSuffix Breakdown \u0026amp; Model Matrix\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eSuffix Code\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eDescription\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eTechnical Details\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAAR181\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBase Model\u003c\/td\u003e\n\u003ctd\u003eRTD \/ TC \/ mV Input Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e-S\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eStandard Type\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e5\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eExplosion Protection\u003c\/td\u003e\n\u003ctd\u003eWith No Explosion Protection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e0\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBasic Type\u003c\/td\u003e\n\u003ctd\u003eBasic Processing Architecture\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAAR181-S50\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYokogawa\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOrigin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eJapan\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.2 to 0.3 kg (Shipping Weight: 3 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eStandard CENTUM I\/O Module Dimensions\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Temp\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0 to 55 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Consumption\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e450 mA (5 VDC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNumber of Channels\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e12 isolated channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput Signal Types\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRTD (Pt100, JPt100), Thermocouple (Types J, K, E, B, R, S, T, N), Millivolt (-100 to 150 mV, -20 to 80 mV)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMeasurement Accuracy\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e+\/-0.1% of span\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWithstanding Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1500 VAC (input to system, 1 minute)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput Resistance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2 M ohm or larger\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTemperature Drift\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e+\/-0.05% per 10 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eData Update Period\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 second\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eExternal Connections\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDirect pressure clamp terminal block, KS cable adapter block, or MIL connector cable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eChannel Isolation and Cold Junction Compensation\u003c\/h3\u003e\n\u003cp\u003eThe AAR181-S50 incorporates 1500 VAC channel-to-system galvanic isolation to suppress common-mode electrical noise and eliminate ground potential differences between field sensor wiring and system logic circuitry. Integrated signal conditioning includes reference junction compensation for thermocouple types and 3-wire\/4-wire RTD excitation balance processing. Active burnout detection monitors sensor loop integrity, driving channel data to upscale or downscale alarm limits within 60 seconds of open-circuit signal loss. Dual-redundant module execution is fully supported when installed in paired I\/O nest configurations.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: How does the module execute sensor burnout detection upon element wire failure?\u003c\/p\u003e\n\u003cp\u003eA: The onboard circuitry monitors sensor loop resistance continuously. When an open circuit occurs, the module forces the digital signal value to either UP (high limit) or DOWN (low limit) based on the channel software configuration within a 60-second detection interval.\u003c\/p\u003e\n\u003cp\u003eQ: What interface cable options are supported for signal termination?\u003c\/p\u003e\n\u003cp\u003eA: Field signals connect directly via pressure clamp terminal blocks, an interface adapter connected via a dedicated KS cable, or a customer-furnished MIL connector cable routed to external terminal bases.\u003c\/p\u003e\n\u003cp\u003eQ: Can the module be installed in a dual-redundant configuration?\u003c\/p\u003e\n\u003cp\u003eA: Yes, two AAR181-S50 modules operate in parallel across paired I\/O backplane slots, enabling seamless hardware failover without interrupting signal acquisition to the field control station.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eShielding and Grounding Rules:\u003c\/strong\u003e Terminate individual signal cable shields at the module grounding bar or pressure clamp earth terminal. Ensure shields are grounded at one point only to prevent ground loops from introducing noise into low-mV RTD voltage measurements.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCable Separation:\u003c\/strong\u003e Route low-level RTD and thermocouple lines in separate metal conduits or cable trays, keeping a minimum distance of 300 mm from 24 VDC control lines and 120\/230 VAC power wiring.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminal Wiring Protocol:\u003c\/strong\u003e Torque pressure clamp terminal screws strictly to manufacturer specifications. Ensure KS cables or MIL connector latches engage completely to maintain continuous contact under cabinet vibration.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":46214944981091,"sku":"AAR181-S50 RTD","price":360.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0583\/5246\/8067\/files\/886..jpg?v=1789866401","url":"https:\/\/www.autocontrolglobal.com\/products\/yokogawa-aar181-s50-centum-vp-rtd-input-module","provider":"AutoControl Global","version":"1.0","type":"link"}