AAT145-S50 YOKOGAWA

AAT145-S50 Yokogawa Input module

Brand：Yokogawa Model number：AAT145-S50

Country of origin: Japan Product weight：0.55kg

HS code：8538900000

Inquire Now

Product Details：

Product Dimensions：

The AAT145-S50 module acts as an interface between field temperature sensors and the field control station. It features multiple channels that accept signals from various standard thermocouple types, performing high-resolution analog-to-digital conversion and cold-junction compensation. The module is engineered with field isolation to prevent ground loops and protect the central control unit from electrical surges occurring in the plant environment. It supports hot-swapping, allowing engineers to replace or service the module without shutting down the field control station or interrupting adjacent signals.

Product Parameters

The module operates with a standard system input voltage supplied via the station backplane. It features 16 isolated input channels for thermocouple connections. It supports standard thermocouple types including Type K, J, E, T, R, S, B, and N. The signal conversion utilizes a 16-bit analog-to-digital converter to ensure high accuracy. The channel-to-channel isolation is rated to withstand high common-mode voltages. The operating temperature range spans from 0°C to 60°C. The ambient operating humidity range is 10% to 90% non-condensing. The module includes built-in open-circuit detection to identify broken sensor wires immediately.

Product Advantages

A major advantage of the AAT145-S50 is its high channel density, offering 16 thermocouple inputs within a single compact module footprint, which significantly saves cabinet space. The integrated cold-junction compensation ensures high measurement accuracy across varying cabinet temperatures. Built-in diagnostic capabilities allow the control system to detect open thermocouple circuits, out-of-range signals, and internal module faults automatically. The hot-swap functionality enhances overall system availability by reducing maintenance downtime. Furthermore, the module's seamless integration into the CENTUM system environment simplifies engineering, configuration, and long-term maintenance.

Important Considerations and Precautions

When installing the AAT145-S50, it is critical to use proper extension wires or compensation cables that match the specific thermocouple type being measured to avoid severe temperature offset errors. Shielded field wiring must be used and grounded correctly at a single point to prevent electromagnetic noise from interfering with small millivolt signal measurements. The ambient temperature inside the enclosure should be kept within specified limits to prevent thermal drift and maintain measurement precision. Before replacing or handling the module, proper electrostatic discharge protection measures must be taken to protect the sensitive internal semiconductor components. Always ensure that the cold-junction temperature sensors installed on the terminal block are properly seated and undamaged.

Product Applications

The Yokogawa AAT145-S50 is widely deployed across process industries where accurate temperature monitoring is critical.

In oil refining and petrochemical plants, it is used to monitor furnace temperatures, distillation column profiles, and reactor bed conditions. In thermal power generation, it measures steam temperatures, turbine casing heat, and flue gas levels. In chemical manufacturing, it provides temperature feedback for exothermic reaction vessels and heating jackets. In metallurgy and glass manufacturing, it monitors high-temperature kilns, melting furnaces, and heat treatment ovens. In pharmaceutical and food processing, it is used for monitoring sterilization processes and large-scale batch vessels.

AAI835-S50 /K4A0 Yokogawa

We have the same series of models in stock. If you don't find the model you need, please contact us and we will provide you with an official quotation！

YokogawaAFV10D

YokogawaUT55A-040-11-00

YokogawaADV151

YokogawaANB10D

YokogawaAAI143-S

YokogawaAAI543-S

YokogawaADV551

YokogawaSAI143-H63

YokogawaPW301

YokogawaAAI543-H00

YokogawaEB401-10

YokogawaUM-330-00