Descripción
Product Description
The AAT145-S03 is a high-accuracy TC/mV analog input module manufactured by Yokogawa for use in CENTUM VP, CENTUM CS3000, and compatible ProSafe-RS system configurations.
This module is designed to acquire low-level temperature and millivolt signals from field sensors and convert them into stable digital data for process monitoring and control.
Unlike analog output modules, the AAT145-S03 functions strictly as an input interface, receiving signals from thermocouples and millivolt sources and transmitting them to the control system with high precision and electrical isolation.
Input Signal Function
The AAT145-S03 receives and conditions low-energy analog signals generated by temperature and measurement sensors. Each channel independently processes the input, ensuring accurate acquisition even in electrically noisy industrial environments.
Supported signal types include:
Thermocouple (TC) temperature signals
Millivolt (mV) analog signals
Low-level sensor outputs requiring high input sensitivity
Technical Specifications
General
Model: AAT145-S03
Manufacturer: Yokogawa
Module Type: TC/mV Analog Input Module
Mounting: Rack-mount, plug-in I/O module
Weight: Approx. 0.70 lbs (0.32 kg)
Input Characteristics
Input Types:
Thermocouple (multiple TC types, system-defined)
Millivolt (mV) voltage input
Number of Channels: Configuration-dependent (commonly 8 or 16)
Input Resolution: High-resolution A/D conversion
Measurement Accuracy: Suitable for precision temperature and process measurement
Sampling Performance: Optimized for stable and repeatable signal acquisition
Isolation
Channel-to-channel isolation
Channel-to-system isolation
Designed to prevent ground loops and common-mode noise interference
Diagnostics
Input signal status monitoring
Sensor disconnection and burnout detection
Internal module self-diagnostics
Fault and status reporting to the host system
Mechanical and Environmental Characteristics
Compatible with Yokogawa I/O bases and TC/mV terminal boards
Natural convection cooling (fanless design)
Industrial-grade enclosure and coated PCB
Operating Temperature: −20 °C to +70 °C
Operating Humidity: 5–95% RH, non-condensing
EMC Performance: Designed for high-noise industrial cabinets
Vibration Resistance: Suitable for fixed control-room installations
System Integration
The AAT145-S03 integrates seamlessly with Yokogawa distributed control and safety systems. Configuration, scaling, and diagnostics are performed through the Yokogawa engineering environment, enabling consistent signal handling and simplified maintenance.
Compatible Platforms:
CENTUM VP
CENTUM CS3000
ProSafe-RS (configuration-dependent)
Typical Applications
Thermocouple temperature measurement
Furnace and reactor temperature monitoring
Process equipment temperature feedback
Millivolt-based sensor acquisition
Critical temperature measurement in control and safety loops
Frequently Asked Questions
Q: Is the AAT145-S03 an analog output module?
A: No. The AAT145-S03 is a TC/mV analog input module. It receives sensor signals and does not generate control outputs.
Q: Can it accept multiple thermocouple types?
A: Yes. Supported TC types are defined through system configuration.
Q: Is this module suitable for high-accuracy temperature measurement?
A: Yes. It is designed for precise low-level signal acquisition in industrial control systems.
Características
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