{"product_id":"nfar181-s50-yokogawa-rtd-input-module-new-original-stock","title":"NFAR181-S50 Yokogawa RTD Input Module | New \u0026 Original Stock","description":"\u003cp\u003eConfigured for industrial process measurement in DCS platforms, the \u003cstrong\u003eYokogawa NFAR181-S50\u003c\/strong\u003e (\u003cstrong\u003eNFAR181-S50\u003c\/strong\u003e RTD Input Module) provides direct signal acquisition and galvanic isolation for RTD sensor inputs.\u003c\/p\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\u003eNFAR181-S50\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\u003eJapan\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\u003eStandard Yokogawa I\/O card form factor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003eStandard industrial range (refer to system manual)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e450 mA (5 V DC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Channels\u003c\/td\u003e\n\u003ctd\u003e12, isolated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Signal Type\u003c\/td\u003e\n\u003ctd\u003ePt100 (3-wire)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Range\u003c\/td\u003e\n\u003ctd\u003e-200 to 800 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccuracy\u003c\/td\u003e\n\u003ctd\u003e+\/- 0.15 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWithstanding Voltage\u003c\/td\u003e\n\u003ctd\u003e1500 V AC (input to system)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eProcess Control and Measurement Accuracy\u003c\/h3\u003e\n\u003cp\u003eThe module maintains signal integrity through active cold junction compensation (CJC) for temperature measurement circuits and provides robust channel-to-channel isolation. The input resistance is maintained at 2 MOhm or higher in both power-on and power-off states to prevent loading effects on the sensor loop. The internal measurement circuitry utilizes a 1 mA excitation current for Pt100 sensors, with a thermal drift characteristic of 30 ppm\/deg C. System integration is supported via a 1-second data refresh cycle, with configurable burn-out detection thresholds for each of the 12 channels to facilitate early diagnostics of open-circuit or short-circuit faults in the field wiring.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Can the burn-out detection timing be adjusted for individual channels?\u003c\/p\u003e\n\u003cp\u003eA: The burn-out detection is a global configuration feature within the module parameters, with a fixed detection window of 60 seconds.\u003c\/p\u003e\n\u003cp\u003eQ: Does the 1500 V AC withstanding voltage rating apply to all I\/O terminals?\u003c\/p\u003e\n\u003cp\u003eA: The withstanding voltage rating of 1500 V AC for 1 minute is specified between the input signal terminals and the internal system backplane logic.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eEnsure the control system is powered down before inserting the module into the designated I\/O rack slot.\u003c\/li\u003e\n\u003cli\u003eVerify that the 3-wire RTD cabling is shielded to minimize electromagnetic interference, and terminate the shield at the specified system grounding point.\u003c\/li\u003e\n\u003cli\u003eCheck that the terminal block is securely locked into the module housing to maintain proper contact pressure for all 12 channels.\u003c\/li\u003e\n\u003cli\u003eConfirm that the ambient temperature surrounding the I\/O rack remains within the specified operational limits to ensure the accuracy of the internal compensation circuitry.\u003c\/li\u003e\n\u003cli\u003eAfter installation, perform a loop test to verify that the digitized values in the DCS match the actual temperature input at the field sensor terminal.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":49174162145532,"sku":"NFAR181-S50","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0787\/9983\/1292\/files\/NFAR181-S502.jpg?v=1780971138","url":"https:\/\/www.electronicplc.com\/ar\/products\/nfar181-s50-yokogawa-rtd-input-module-new-original-stock","provider":"Electronic PLC","version":"1.0","type":"link"}