{"product_id":"aar145-s50-yokogawa-rtd-pot-input-module-16-channel","title":"AAR145-S50 Yokogawa RTD\/POT Input Module | 16-Channel","description":"\u003ch3\u003e\u003cstrong\u003e01 | Product Profile – Resistance Signal Acquisition\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eYokogawa AAR145-S50\u003c\/strong\u003e is a 16-channel RTD\/POT Input Module designed for industrial measurement and control applications. It acquires resistance signals from resistance temperature detectors (RTDs) and potentiometers (POTs). Its 16 isolated input channels support individual RTD or POT signal selection. The module accepts three-wire Pt100 RTD signals and potentiometer resistance signals. It provides dedicated measurement functions for temperature monitoring and resistance-based position feedback. With individual channel selection, engineers can configure different input signal types within one module. This arrangement offers flexibility when integrating temperature sensors and position measurement devices. The \u003cstrong\u003eAAR145-S50\u003c\/strong\u003e is suitable for distributed measurement systems requiring multiple resistance input points. Its dedicated cable connection supports integration with compatible Yokogawa terminal board configurations. \u003cstrong\u003ePrimary Engineering Functions\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAcquires signals from 16 independent RTD\/POT input channels.\u003c\/li\u003e\n\u003cli\u003eSupports three-wire Pt100 temperature sensors.\u003c\/li\u003e\n\u003cli\u003eMeasures potentiometer resistance from 100 Ω to 10 kΩ.\u003c\/li\u003e\n\u003cli\u003eAllows individual RTD\/POT selection for each channel.\u003c\/li\u003e\n\u003cli\u003eProvides specified input-to-system and channel-to-channel withstand voltage.\u003c\/li\u003e\n\u003cli\u003eUpdates measurement data every 1 second.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003e02 | Ordering Code and Configuration Breakdown\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe complete model number identifies the module type and ordering configuration.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eCode\u003c\/th\u003e\n\u003cth\u003eClassification\u003c\/th\u003e\n\u003cth\u003eTechnical Description\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAAR145\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e16-channel RTD\/POT Input Module with isolated channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e5\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSuffix Code\u003c\/td\u003e\n\u003ctd\u003eWithout 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\u003eSuffix Code\u003c\/td\u003e\n\u003ctd\u003eBasic type\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eComplete Ordering Reference: AAR145-S50\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAAR145:\u003c\/strong\u003e Identifies the RTD\/POT input module.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eS:\u003c\/strong\u003e Ordering designation included in the supplied product reference.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e5:\u003c\/strong\u003e Specifies the version without explosion protection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e0:\u003c\/strong\u003e Specifies the basic type.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eConfiguration Selection Note:\u003c\/strong\u003e The supplied suffix description defines codes 5 and 0. Confirm the meaning of the S designation against the applicable Yokogawa ordering specification before placing an order.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003e03 | Technical Data and Measurement Performance\u003c\/strong\u003e\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eYokogawa\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eAAR145-S50\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBase Model\u003c\/td\u003e\n\u003ctd\u003eAAR145\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eRTD\/POT Input Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Channels\u003c\/td\u003e\n\u003ctd\u003e16 isolated channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Selection\u003c\/td\u003e\n\u003ctd\u003eIndividual RTD\/POT selection for CH1–CH16\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRTD Standard\u003c\/td\u003e\n\u003ctd\u003eJIS C1604:1997; IEC 751:1995\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRTD Sensor\u003c\/td\u003e\n\u003ctd\u003ePt100, three-wire type\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePOT Resistance Range\u003c\/td\u003e\n\u003ctd\u003e100 Ω to 10 kΩ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePOT Span Resistance\u003c\/td\u003e\n\u003ctd\u003e50% or greater of total resistance\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\u003eRTD Accuracy\u003c\/td\u003e\n\u003ctd\u003e±150 mΩ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePOT Accuracy\u003c\/td\u003e\n\u003ctd\u003e±0.2% \/ FS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRTD Measurement Current\u003c\/td\u003e\n\u003ctd\u003e1 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Signal Source and Wiring Resistance\u003c\/td\u003e\n\u003ctd\u003e150 Ω or less, per wire\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eData Update Period\u003c\/td\u003e\n\u003ctd\u003e1 second\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRTD Temperature Drift\u003c\/td\u003e\n\u003ctd\u003e±0.3 Ω \/ 10 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePOT Temperature Drift\u003c\/td\u003e\n\u003ctd\u003e±0.4% \/ 10 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAllowable Input-to-System Voltage\u003c\/td\u003e\n\u003ctd\u003e500 V AC, 1 minute; 1500 V AC for a single card\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput-to-Input Withstand Voltage\u003c\/td\u003e\n\u003ctd\u003e200 V AC, 1 minute\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Current Consumption\u003c\/td\u003e\n\u003ctd\u003e350 mA at 5 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExternal Connection\u003c\/td\u003e\n\u003ctd\u003eDedicated cable, KS8 \/ AKB335\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003eApproximately 0.3 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExplosion Protection\u003c\/td\u003e\n\u003ctd\u003eNot provided\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003cstrong\u003e04 | Input Measurement Architecture\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eA. RTD Temperature Measurement\u003c\/strong\u003e The RTD input function supports three-wire Pt100 sensors. It measures resistance changes associated with process temperature variations. Key characteristics:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSensor type: Pt100.\u003c\/li\u003e\n\u003cli\u003eConnection: Three-wire configuration.\u003c\/li\u003e\n\u003cli\u003eSupported standards: JIS C1604:1997 and IEC 751:1995.\u003c\/li\u003e\n\u003cli\u003eMeasurement current: 1 mA.\u003c\/li\u003e\n\u003cli\u003eSpecified accuracy: ±150 mΩ.\u003c\/li\u003e\n\u003cli\u003eTemperature drift: ±0.3 Ω per 10 °C.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThree-wire wiring helps compensate for lead resistance effects. Engineers should maintain consistent wire connections and check cable resistance during installation. \u003cstrong\u003eB. Potentiometer Resistance Measurement\u003c\/strong\u003e The POT input function measures resistance changes from connected potentiometers. Key characteristics:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTotal resistance: 100 Ω to 10 kΩ.\u003c\/li\u003e\n\u003cli\u003eSpan resistance: At least 50% of total resistance.\u003c\/li\u003e\n\u003cli\u003eSpecified accuracy: ±0.2% of full scale.\u003c\/li\u003e\n\u003cli\u003eTemperature drift: ±0.4% per 10 °C.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis function supports position feedback from compatible mechanical adjustment and displacement devices. For example, a potentiometer connected to a valve position mechanism can provide resistance-based feedback. The control system can use this signal to monitor the actuator's operating position. \u003cstrong\u003eC. Individual Channel Selection\u003c\/strong\u003e Each channel from CH1 to CH16 supports individual RTD or POT selection. This arrangement allows engineers to combine different resistance measurement points within one input module. It reduces the need to allocate separate modules for every sensor type.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003e05 | Electrical Isolation and Signal Integrity\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe module provides specified withstand voltage between input and system circuits. It also provides withstand voltage between input channels.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eIsolation Test\u003c\/th\u003e\n\u003cth\u003eWithstand Voltage\u003c\/th\u003e\n\u003cth\u003eDuration\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput to System\u003c\/td\u003e\n\u003ctd\u003e500 V AC\u003c\/td\u003e\n\u003ctd\u003e1 minute\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSingle Card Input to System\u003c\/td\u003e\n\u003ctd\u003e1500 V AC\u003c\/td\u003e\n\u003ctd\u003e1 minute\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBetween Input Channels\u003c\/td\u003e\n\u003ctd\u003e200 V AC\u003c\/td\u003e\n\u003ctd\u003e1 minute\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eThese ratings describe electrical withstand performance. They do not represent continuous operating voltage ratings. Engineers should also separate low-level sensor wiring from high-power motor cables. Proper cable routing helps reduce unwanted electrical interference.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003e06 | Reference Junction Compensation and Terminal Board Conditions\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe supplied technical data includes reference junction compensation accuracy associated with the AET4D terminal board. The specified accuracy varies with terminal board ambient temperature. \u003cstrong\u003eAET4D Terminal Board Only\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eAmbient Temperature\u003c\/th\u003e\n\u003cth\u003eCompensation Accuracy\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e-20 to 0 °C\u003c\/td\u003e\n\u003ctd\u003e±1.5 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e0 to 30 °C\u003c\/td\u003e\n\u003ctd\u003e±1.0 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e30 to 70 °C\u003c\/td\u003e\n\u003ctd\u003e±1.5 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eInstallation in Standard Cabinet\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eAmbient Temperature\u003c\/th\u003e\n\u003cth\u003eCompensation Accuracy\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e0 to 30 °C\u003c\/td\u003e\n\u003ctd\u003e±1.0 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e30 to 50 °C\u003c\/td\u003e\n\u003ctd\u003e±1.5 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eEngineering Note:\u003c\/strong\u003e These figures relate to the supplied terminal board compensation data. They should not be interpreted as additional AAR145 RTD measurement accuracy specifications. Confirm their applicability to the actual terminal board and measurement configuration.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003e07 | Installation and Wiring Recommendations\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eCorrect sensor wiring directly affects resistance measurement accuracy. Engineers should verify the complete signal path before commissioning. \u003cstrong\u003eInstallation Preparation\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eConfirm the module reference: \u003cstrong\u003eAAR145-S50\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eVerify the compatible Yokogawa I\/O system and mounting arrangement.\u003c\/li\u003e\n\u003cli\u003eConfirm the required terminal board and dedicated cable.\u003c\/li\u003e\n\u003cli\u003eCheck the sensor type and resistance range.\u003c\/li\u003e\n\u003cli\u003eInspect the cabinet environment and grounding arrangement.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eRTD Wiring Checks\u003c\/strong\u003e\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eUse compatible three-wire Pt100 sensors.\u003c\/li\u003e\n\u003cli\u003eVerify the terminal assignments before connecting the sensor.\u003c\/li\u003e\n\u003cli\u003eCheck individual wire continuity.\u003c\/li\u003e\n\u003cli\u003eMeasure wiring resistance and confirm the specified limits.\u003c\/li\u003e\n\u003cli\u003eKeep sensor cables away from high-current wiring.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003ePOT Wiring Checks\u003c\/strong\u003e\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eConfirm the potentiometer's total resistance.\u003c\/li\u003e\n\u003cli\u003eVerify that the selected span meets the 50% minimum requirement.\u003c\/li\u003e\n\u003cli\u003eCheck resistance variation across the mechanical travel range.\u003c\/li\u003e\n\u003cli\u003eInspect the wiper connection for intermittent contact.\u003c\/li\u003e\n\u003cli\u003eConfirm the selected channel uses POT input configuration.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eConnection Accessories\u003c\/strong\u003e The supplied specification identifies dedicated KS8\/AKB335 cable connections. Confirm the required cable reference and terminal board arrangement before ordering accessories.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003e08 | Commissioning and Field Diagnostics\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eAAR145-S50\u003c\/strong\u003e supports resistance-based process measurement. Accurate commissioning requires checking the sensor, wiring, channel configuration, and terminal board together. \u003cstrong\u003eDiagnostic Case 1: RTD Temperature Readings Are Unstable\u003c\/strong\u003e Possible causes include loose terminals, inconsistent wire resistance, damaged sensor leads, or electrical interference. Recommended checks:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eInspect all three RTD conductors.\u003c\/li\u003e\n\u003cli\u003eMeasure sensor resistance with a suitable instrument.\u003c\/li\u003e\n\u003cli\u003eCheck individual lead resistance.\u003c\/li\u003e\n\u003cli\u003eInspect cable shielding and routing.\u003c\/li\u003e\n\u003cli\u003eCompare readings with a known reference instrument.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eDiagnostic Case 2: POT Position Feedback Does Not Match Mechanical Travel\u003c\/strong\u003e Possible causes include incorrect total resistance, insufficient span resistance, or mechanical wear. Recommended checks:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMeasure the potentiometer's total resistance.\u003c\/li\u003e\n\u003cli\u003eCheck the resistance change across the complete travel range.\u003c\/li\u003e\n\u003cli\u003eInspect the wiper for unstable contact.\u003c\/li\u003e\n\u003cli\u003eVerify the channel's POT configuration.\u003c\/li\u003e\n\u003cli\u003eCompare electrical feedback with actual actuator position.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eDiagnostic Case 3: One Channel Shows an Abnormal Reading\u003c\/strong\u003e First compare the affected channel with other configured channels. Inspect sensor wiring and terminal connections. Check the individual input selection before suspecting module hardware. \u003cstrong\u003eDiagnostic Case 4: Measurement Accuracy Changes with Cabinet Temperature\u003c\/strong\u003e Check the terminal board ambient temperature. Compare the installation conditions with the AET4D compensation specifications. Also inspect sensor wiring and module temperature drift. \u003cstrong\u003eMaintenance Recommendations\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eInspect sensor terminals during scheduled shutdowns.\u003c\/li\u003e\n\u003cli\u003eRecord RTD resistance and temperature readings.\u003c\/li\u003e\n\u003cli\u003eCheck potentiometer travel and wiper stability.\u003c\/li\u003e\n\u003cli\u003eInspect dedicated cable connections.\u003c\/li\u003e\n\u003cli\u003eCompare critical measurements with calibrated reference instruments.\u003c\/li\u003e\n\u003cli\u003eRecord channel configuration changes for future troubleshooting.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003e09 | Compatible Equipment and Industrial Applications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe module is designed for compatible Yokogawa distributed I\/O configurations. Its measurement functions suit equipment that requires temperature or resistance-based position feedback. \u003cstrong\u003e1. Chemical and Petrochemical Processing\u003c\/strong\u003e Suitable measurement points include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eProcess vessel temperature monitoring.\u003c\/li\u003e\n\u003cli\u003eHeat exchanger temperature measurement.\u003c\/li\u003e\n\u003cli\u003eReactor temperature monitoring.\u003c\/li\u003e\n\u003cli\u003eAuxiliary equipment temperature feedback.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e2. Oil and Gas Production\u003c\/strong\u003e RTD channels can monitor equipment temperatures in compatible control systems. POT channels can collect position feedback from suitable mechanical devices. \u003cstrong\u003e3. Power Generation Equipment\u003c\/strong\u003e Potential measurement applications include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAuxiliary equipment temperature monitoring.\u003c\/li\u003e\n\u003cli\u003eCooling system temperature measurement.\u003c\/li\u003e\n\u003cli\u003eMechanical position feedback.\u003c\/li\u003e\n\u003cli\u003eProcess equipment condition monitoring.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e4. Industrial Valve and Actuator Systems\u003c\/strong\u003e POT inputs can monitor resistance changes from compatible position transmitters. Engineers can compare the feedback signal with commanded actuator movement. \u003cstrong\u003e5. Manufacturing and Process Machinery\u003c\/strong\u003e The module can collect temperature and mechanical position signals from distributed equipment. Individual channel selection supports mixed RTD\/POT measurement requirements.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003e10 | Global PLC Spare HUB's Insight\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe main engineering advantage of the \u003cstrong\u003eAAR145-S50\u003c\/strong\u003e is its ability to combine RTD and POT measurements across 16 isolated channels. However, mixed signal capability does not eliminate the need for careful channel planning. Each input must match its connected sensor type and wiring arrangement. \u003cstrong\u003eField Example: Heat Exchanger and Valve Monitoring\u003c\/strong\u003e Consider a chemical processing unit with multiple heat exchangers and control valves. The maintenance team needs to monitor several Pt100 temperature sensors. It also needs resistance-based position feedback from compatible valve mechanisms. Engineers can configure individual AAR145 channels for the required RTD or POT signals. They should then verify each sensor's resistance range and wiring arrangement. During commissioning, one temperature channel may show a reading different from the reference instrument. A practical troubleshooting sequence starts with the three-wire connection and lead resistance. For a valve feedback channel, an inconsistent position reading requires a different inspection approach. Engineers should check potentiometer travel, total resistance, and wiper contact. \u003cstrong\u003eOur Engineering Recommendation:\u003c\/strong\u003e Do not evaluate this module only by its 16-channel capacity. Check the RTD accuracy, POT full-scale accuracy, wiring resistance limits, temperature drift, and terminal board configuration. This approach helps prevent measurement errors and reduces unnecessary module replacement.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003e11 | Procurement, Warranty and Shipping\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eProduct Identification\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eManufacturer: Yokogawa\u003c\/li\u003e\n\u003cli\u003eModel: \u003cstrong\u003eAAR145-S50\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eProduct: RTD\/POT Input Module\u003c\/li\u003e\n\u003cli\u003eInput Capacity: 16 isolated channels\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWarranty Policy\u003c\/strong\u003e Global PLC Spare HUB provides a \u003cstrong\u003e12-month warranty\u003c\/strong\u003e for the supplied product, subject to applicable sales terms. \u003cstrong\u003eInternational Shipping\u003c\/strong\u003e Available shipping methods include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFedEx\u003c\/li\u003e\n\u003cli\u003eUPS\u003c\/li\u003e\n\u003cli\u003eDHL\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWe can arrange shipping according to the confirmed order and destination. Contact our sales team to confirm availability, pricing, and accessory requirements.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003e12 | Frequently Asked Questions\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ1. How should engineers evaluate the measurement error when using long RTD cables?\u003c\/strong\u003e Cable resistance is an important factor in three-wire RTD measurements. The specified signal source and wiring resistance must remain within the stated limits. Engineers should measure each conductor and check connection consistency before calibrating the measurement loop. \u003cstrong\u003eQ2. What happens if a potentiometer provides less than 50% span resistance?\u003c\/strong\u003e The supplied specification requires a span resistance of at least 50% of total resistance. A smaller span does not meet the specified input requirement. Select a suitable potentiometer or review the mechanical measurement arrangement. \u003cstrong\u003eQ3. Can all 16 channels measure the same signal type?\u003c\/strong\u003e Yes. Individual channel selection allows engineers to configure RTD or POT inputs separately. All 16 channels can therefore be assigned according to the actual sensor arrangement, subject to system configuration requirements. \u003cstrong\u003eQ4. How should maintenance teams verify the RTD measurement accuracy?\u003c\/strong\u003e Use a calibrated resistance simulator or suitable reference instrument. Compare the module reading against known resistance values. Record the results across representative measurement points and inspect the wiring before adjusting the system. \u003cstrong\u003eQ5. What information should buyers provide when selecting an AAR145 replacement?\u003c\/strong\u003e Provide the complete model number, existing I\/O configuration, terminal board reference, cable type, and required input signal types. Also confirm whether the application requires RTD, POT, or mixed-channel operation. These details help prevent accessory and compatibility mismatches.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003e13 | Request a Quote – Yokogawa AAR145-S50\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eLooking for a \u003cstrong\u003eYokogawa AAR145-S50 16-Channel RTD\/POT Input Module\u003c\/strong\u003e? Global PLC Spare HUB supports industrial automation spare parts sourcing for process control and distributed I\/O applications. Send us your complete model number and required quantity. Our team can assist with product verification, quotation, and international shipping arrangements.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/AAR145.png?v=1793689340\" alt=\"\"\u003e\u003c\/p\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":67982714831030,"sku":"AAR145-S50","price":185.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/AAR145-S50-1.jpg?v=1793689326","url":"https:\/\/www.plcsparehub.com\/products\/aar145-s50-yokogawa-rtd-pot-input-module-16-channel","provider":"Global PLC Spare Hub","version":"1.0","type":"link"}