{"product_id":"aar181-s00-s2-rtd-input-module-yokogawa","title":"AAR181-S00 S2 RTD Input Module | Yokogawa","description":"\u003cp\u003eThe \u003cstrong\u003eYokogawa AAR181-S00 S2\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eAAR181\u003c\/strong\u003e RTD Input Module, operates as a dedicated hardware component for 12-channel isolated temperature measurement acquisition within Yokogawa process control platforms. It processes direct resistance signals from field RTD sensors and converts electrical values for sub-rack bus distribution.\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\u003eCode \/ Option\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eDescription\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel: AAR181\u003c\/td\u003e\n\u003ctd\u003eRTD Input Module (Isolated 12-channel)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e-S\u003c\/td\u003e\n\u003ctd\u003eStandard type\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e0\u003c\/td\u003e\n\u003ctd\u003eBasic logic interface configuration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e0\u003c\/td\u003e\n\u003ctd\u003eBasic functional execution level\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eS2\u003c\/td\u003e\n\u003ctd\u003eHardware revision level 2\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\u003eModel\u003c\/td\u003e\n\u003ctd\u003eAAR181-S00 S2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eYokogawa\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.2 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e3.2 cm x 12.5 cm x 13.0 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-20 to +70 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eMax 450 mA at 5 VDC (backplane powered)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Channels\u003c\/td\u003e\n\u003ctd\u003e12 isolated channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal Type\u003c\/td\u003e\n\u003ctd\u003eCH1 to CH12 RTD inputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAllowable Input Voltage\u003c\/td\u003e\n\u003ctd\u003e+\/-5 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMeasurement Accuracy\u003c\/td\u003e\n\u003ctd\u003eRTD: +\/-120 mohm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Drift\u003c\/td\u003e\n\u003ctd\u003eRTD: +\/-120 mohm \/ 10 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRTD Excitation Current\u003c\/td\u003e\n\u003ctd\u003e1 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Wiring Resistance\u003c\/td\u003e\n\u003ctd\u003e40 ohm or less per wire\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExternal Termination\u003c\/td\u003e\n\u003ctd\u003ePressure clamp terminal block\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRedundancy\u003c\/td\u003e\n\u003ctd\u003eDual-redundant configuration support\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003e4-20 mA HART Loop Protocol and Channel Isolation\u003c\/h3\u003e\n\u003cp\u003eThe AAR181-S00 S2 incorporates internal channel-to-channel isolation networks across all 12 input paths to prevent ground loop currents from destabilizing sensor conversion logic. Operating in Yokogawa DCS chassis alongside control modules processing 4-20 mA HART loop protocol signals, the board isolates millivolt-level RTD measurement circuits from high common-mode backplane noise. Continuous galvanic separation ensures consistent signal integrity across adjacent process input channels during fast scan execution cycles.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: How is field sensor wiring terminated on the AAR181-S00 S2 module?\u003c\/p\u003e\n\u003cp\u003eA: Physical wiring connects via a direct pressure clamp terminal assembly attached to the front interface of the module.\u003c\/p\u003e\n\u003cp\u003eQ: What is the maximum allowable wiring resistance for each RTD lead?\u003c\/p\u003e\n\u003cp\u003eA: The combined signal source and wiring resistance must not exceed 40 ohm per wire to maintain specified measurement accuracy.\u003c\/p\u003e\n\u003cp\u003eQ: Is dual-redundant operation supported by the AAR181-S00 S2?\u003c\/p\u003e\n\u003cp\u003eA: Yes, the module hardware design allows paired installation in dual-redundant sub-rack slots to execute continuous process signal tracking and switch-over.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eESD Protection:\u003c\/strong\u003e Always wear a grounded anti-static wrist strap before handling the circuit board assembly to prevent electrostatic discharge damage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModule Insertion:\u003c\/strong\u003e Align board edges with sub-rack chassis guides and push firmly until rear bus connectors fully lock into the backplane.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShield Grounding:\u003c\/strong\u003e Terminate RTD extension cable shielding at the designated system earthing bar inside the control cabinet to suppress external interference.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWiring Separation:\u003c\/strong\u003e Route low-level RTD input leads in dedicated raceways separated from high-voltage AC power cabling and inductive motor loads.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":53312706117941,"sku":"AAR181-S00 S2","price":66.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/7630\/5461\/files\/AAR181-S00_be2d2470-87c7-4dff-9696-17ccebfc6444.jpg?v=1786949604","url":"https:\/\/www.5gplc.com\/products\/aar181-s00-s2-rtd-input-module-yokogawa","provider":"High Five PLC Solution Limited","version":"1.0","type":"link"}