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          Stocking genuine Yokogawa automation hardware, Apter Power provides fully tested input modules to safeguard your precision measurement infrastructure and avoid costly downtime.

        AAT141-S50 S2

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        Yokogawa AAT141-S50 S2 is a 16-channel isolated input module that receives thermocouple and millivolt signals for temperature and low-voltage measurement in industrial control systems.
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        Warranty Policy
        We provide 1 year warranty for all remaining parts.
        The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
        Return Notice
        The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
        In the event of a defect, we will send new equipment, repair equipment or refund the purchase price based on our availability. You must contact us to obtain a return authorization and return the defective device to us within 14 days of reporting the defect.
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        Various transportation options are available in each country. Shipping methods and fees are clearly indicated on all quotations.Various transportation options are available in each country. Shipping methods and fees are clearly indicated on all quotations.
        Parts Availability
        Apter Power offers a wide range of components, products and services related to industrial automation. We also supply new products from a variety of quality manufacturers.
        How to order
        We have been working hard to update our inventory. If we have stock or parts available for new factory purchases, you can contact the order online. If we do not currently have an inventory, the displayed quantity will show "Ask". Please create an online quote or contact us by phone, fax or email to check availability.

        Technical specifications for AAT141-S50 S2

        • Manufacturer:
          Yokogawa
        • Part Number:
          AAT141-S50 S2
        • Product Family:
          Centum CS-Centum VP
        • Product Type:
          TC/RTD Input Modules (Isolated)
        • Stock:
          1
        • Number of input channels:
          16, isolated (*7)
        • Input signal:
          TC: JIS C1602:1995, IEC584:1995, Type J, K, E, B(*1), R, S, T, N; mV: -100 to 150 mV, -20 to 80 mV.
        • Switching input signals:
          TC/mV can be set individually for CH1 to CH16.
        • Allowable input voltage:
          ±5 V
        • Withstanding voltage:
          Between input and system: 1500 V AC, for 1 minute
        • Input resistance:
          Power ON: 2 MΩ or larger; Power OFF: 2 MΩ or larger.
        • Accuracy:
          TC: ±30 µV; MV: ±80 µV for span (-100 to 150 mV), ±30 µV for span (-20 to 80 mV).
        • Allowable total resistance of signal source plus wiring:
          1000 Ω or less
        • Effect of allowable signal source resistance (1000 Ω):
          ±20 µV(*3)
        • Reference junction compensation accuracy:
          Within ±1 °C (*4) (*5)
        • Temperature drift:
          ±80 µV/10 °C (-100 to 150 mV input), ±30 µV/10 °C (TC/-20 to 80 mV input).
        • Data update period:
          1 s
        • Maximum current consumption:
          450 mA (5 V DC)
        • Suffix Codes:
          -S=Standard type; 5=With no explosion protection; 0=Basic type.
        • Weight:
          0.18 kg
        • Estimated shipping dimensions:
          3.2x10.6x13cm
        • Tariff Code:
          8466200090
        • Country of origin:
          Japan
        • Place of shipment:
          Xiamen, Fujian, China
        By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

        More Information

        Overview Manuals Specifications Performance Compatibility Application Scenarios

        Features:

        • Sixteen isolated channels with independent thermocouple or millivolt selection.
        • High input-to-system withstand capability for dependable signal separation.
        • Dual-redundant operation for critical process measurement applications.
        Accurate temperature information is essential for stable process control, equipment protection, and production quality. Yokogawa AAT141-S50 S2 gathers signals from multiple thermocouples and low-voltage instruments through one 16-channel interface. Individual channel configuration allows different thermocouple types and millivolt ranges to operate within the same installation. Plant operators can monitor several process zones without assigning a separate module to every signal category. Such flexibility supports efficient cabinet organization and future system expansion.

        Yokogawa AAT141-S50 S2 can serve applications where small electrical signals must remain measurable despite industrial interference. High input resistance reduces loading on connected sensors and instruments. A source and wiring resistance allowance of up to 1000 ohms provides practical flexibility for field cable runs. Input-to-system withstand protection helps separate measurement circuits from the control platform. Reliable isolation is valuable in plants containing motors, switching equipment, heaters, and other possible sources of electrical noise.

        Critical processes often require temperature monitoring to continue without interruption. Yokogawa AAT141-S50 S2 supports dual-redundant configurations for measurement points associated with reactors, furnaces, boilers, and other essential equipment. A one-second update period provides regular operating data for supervision and process adjustment. Reference junction compensation supports thermocouple measurement accuracy as ambient conditions change. The module therefore contributes to dependable monitoring in petrochemical plants, power-generation facilities, metallurgical operations, and other process industries.

        The AAT141-S50 S2 Yokogawa TC/RTD Input Modules (Isolated) may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
        Yokogawa AAT141-S50 S2 TC/RTD Input Modules (Isolated) Manuals,Datasheets,Link Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
        Yokogawa AAT141-S50 S2 TC/RTD Input Modules (Isolated) Specs

        General

        • Manufacturer Yokogawa
        • Model AAT141-S50 S2
        • Condition New Original ready stock
        • Product Family AAT145-S53 S1,AAT141-S00 S2,AAT141-S03 S2
        Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
        • Channel Isolation: Features 16 channels of fully independent opto-isolation, providing insulation and anti-interference capabilities up to 1500V AC.
        • High-Precision Acquisition: Supports high-resolution conversion of weak voltages from -100 mV to +150 mV, ensuring accurate temperature measurement.
        • Dual-Redundant Configuration: Fully supports dual-redundant configuration, achieving zero-interruption data switching in the event of hardware failure.
        • Signal Noise Reduction: Built-in high-efficiency low-pass filter automatically eliminates strong electric fields in industrial environments and power frequency noise generated by frequency converters.
        • Multiple Thermocouple Types: Perfectly adapts to signals from the full range of standard thermocouple transmitters, including K, J, E, T, R, S, B, and N.
        • CENTUM Integration: Fully compatible with Yokogawa CENTUM VP and CS 3000 systems, directly mountable via standard FIO bus.
        • HART Protocol Communication: Supports HART intelligent communication overlay on analog signals for remote asset management and transmitter diagnostics.
        • Field Wiring Terminals: Flexible with pressure clamping terminals or screw terminal blocks for seamless connection to multi-strand compensating wires in the field.
        • Multi-point Temperature Control in Heating Furnaces: Acquires multi-channel thermocouple signals in petrochemical cracking furnaces and industrial kilns for interlocked temperature control.
        • Steam Turbine Bearing Shaft Temperature: High-precision monitoring of minute temperature fluctuations in power plant steam turbine bearings and generator coils.
        • Precision Monitoring of Reactors: Used for monitoring the jacket and internal temperature of pharmaceutical and fine chemical reactors to prevent runaway chemical reactions.
        • Experimental-grade Microvolt Acquisition: In harsh environments such as blast furnaces, directly converts mV-level voltage signals from special sensors into DCS process data.
        Description
        Yokogawa AAT141-S50 S2 provides 16 isolated input channels for acquiring thermocouple and millivolt signals from industrial field instruments. Supported thermocouple types include J, K, E, B, R, S, T, and N in accordance with JIS C1602:1995 and IEC584:1995. Millivolt measurement ranges include -100 to 150 mV and -20 to 80 mV. Thermocouple or millivolt operation can be selected individually for channels CH1 through CH16, allowing mixed signal configurations within one module.

        Yokogawa AAT141-S50 S2 accepts an allowable input voltage of ±5 V and provides 1500 V AC withstand capability for one minute between the input circuits and the control system. Input resistance remains at 2 megohms or higher with power switched on or off. The allowable combined resistance of the signal source and field wiring is 1000 ohms or less. At the maximum permitted source resistance, the measurement effect is limited to ±20 microvolts.

        Measurement performance for Yokogawa AAT141-S50 S2 includes thermocouple accuracy of ±30 microvolts. Millivolt accuracy is ±80 microvolts across the -100 to 150 mV span and ±30 microvolts across the -20 to 80 mV span. Reference junction compensation accuracy remains within ±1°C under the specified conditions. Temperature drift is ±80 microvolts per 10°C for the -100 to 150 mV range and ±30 microvolts per 10°C for thermocouple or -20 to 80 mV operation.

        Yokogawa AAT141-S50 S2 updates input data every one second and consumes a maximum of 450 mA from the 5 V DC supply. Dual-redundant configuration support allows paired modules to be applied at important temperature and low-voltage monitoring points. Typical applications include reactors, boilers, furnaces, flue systems, process heaters, and instruments producing low-level millivolt signals. Suffix code -S indicates the standard type, 5 indicates no explosion protection, and 0 identifies the basic type.
        Alternative Names
        AATI4I-S50 S2 AAT141-S5O S2 AAT141S50 S2 AAT141-S03 S2 AAT141-S00 S2 AAT145-S53 S1 AAT145-S00 S1 AAT145-S03 S1
        Technical notes
        Designed for mission-critical operations, the Yokogawa AAT141-S50 S2 module features 16 channels, full dual-redundancy support, and integrated HART communication to optimize plant asset management.
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        FAQS

        The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
        VIEW ALL FAQS
        What signals can Yokogawa AAT141-S50 S2 receive?
        Supported inputs include thermocouple types J, K, E, B, R, S, T, and N, together with -100 to 150 mV and -20 to 80 mV signals.
        Can Yokogawa AAT141-S50 S2 operate in a dual-redundant configuration?
        Yes. Dual-redundant operation can support important process measurements where continued signal acquisition is required.
        How are Yokogawa AAT141-S50 S2 input types assigned?
        Thermocouple or millivolt operation can be selected separately for every channel from CH1 through CH16.
        Does Yokogawa AAT141-S50 S2 provide electrical withstand protection?
        The insulation structure withstands 1500 V AC for one minute between the input circuits and the system side.
        Why does Yokogawa AAT141-S50 S2 provide 16 isolated channels?
        Sixteen isolated channels allow multiple temperature and low-voltage measurement points to be collected while maintaining separation between field inputs and the control system.

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