AAT145-S00 | Yokogawa CENTUM VP/FIO TC/mV Input Module

Product Overview

The Yokogawa AAT145-S00 functions as a high-performance analog input interface for the CENTUM VP and CS 3000 FIO (Field network I/O) systems. This module provides 16 isolated channels specifically designed to capture low-level voltage signals from Thermocouples (TC) or millivolt (mV) sources. It converts these sensitive field signals into precise digital data for the Distributed Control System (DCS) to process and analyze. We supply this module in 100% brand new, original factory condition to ensure the thermal measurement accuracy required for your critical process loops.

Part Number Breakdown: AAT145-S00

• AAT145: Thermocouple/mV Input Module (16-channel, Isolated).

• -S: Standard type for general industrial temperature monitoring.

• 0: Always 0 (Standard configuration).

• 0: Basic type without specialized conformal coating.

Technical Specifications

• Manufacturer: Yokogawa

• Input Signal Types: Thermocouples (Type J, K, E, T, R, S, B, N, etc.) and mV signals

• Number of Channels: 16 (Fully Isolated)

• Input Impedance: 1 MΩ or more (during power-on)

• Data Update Period: 1 second

• Isolation: Channel-to-channel and channel-to-system isolation

• Power Consumption: 450 mA max (5 V DC supplied via FIO base module)

• Mounting: Plug-in installation on FIO baseplate

• Weight: 0.3 kg

• Condition: 100% Brand New Original

Engineering Advantages

The AAT145-S00 optimizes temperature and low-voltage signal acquisition through advanced hardware design and isolation:

• Comprehensive Channel Isolation: This module features total galvanic isolation between every channel. This architecture eliminates ground loops and prevents electrical noise or field-side surges from affecting neighboring channels, ensuring that one faulty thermocouple does not compromise the entire I/O nest.

• High-Precision Signal Processing: The AAT145-S00 delivers high-resolution A/D conversion for millivolt-level inputs. This allows the DCS to track minute temperature fluctuations in reactors, boilers, and turbines with extreme accuracy, enabling tighter process control.

• Robust Noise Rejection: Yokogawa utilizes an EMI-resistant housing and sophisticated filtering circuitry to block electromagnetic interference. This ensures stable measurement values even when field wiring runs near high-voltage equipment or variable frequency drives (VFDs).

• Integrated Burn-out Detection: The module monitors the integrity of the thermocouple circuit. If a sensor wire breaks or the junction fails, the burn-out function alerts the DCS immediately, allowing the system to trigger safe-state logic and prevent control errors based on false data.

FAQs

• Does this module require a Cold Junction Compensation (CJC) sensor?

  Yes. For accurate thermocouple readings, you must use the AAT145-S00 with an appropriate pressure-clamp terminal block that incorporates a built-in CJC sensor, or provide an external reference junction.

• Can I mix different thermocouple types on the same module?

  Yes. The CENTUM VP software allows you to configure each of the 16 channels independently for various thermocouple types (e.g., Type K on channel 1 and Type J on channel 2) or standard mV inputs.

• Is the AAT145-S00 hot-swappable?

  Yes. The module supports plug-in installation on the FIO baseplate. You can replace the module without disconnecting field wiring from the terminal block or powering down the entire I/O rack, which minimizes system downtime.

• Is this a genuine Yokogawa component?

  We guarantee that every AAT145-S00 we ship is 100% brand new and original. Each unit arrives in its original factory packaging and includes our comprehensive 1-year warranty.