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- Yokogawa
- AAT145-S03
- TC/MV Input Module
- Japan
- 32.8 × 130 × 127.2 mm
- 0.3 kg
- Xiamen, China
- New & In Stock
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Product Overview
The Yokogawa AAT145-S03 is a TC/mV Input Module used in Yokogawa CENTUM / FIO distributed control systems. It is designed to acquire low-level thermocouple (TC) and millivolt (mV) signals, convert them into digital process data, and transmit them to the control system for monitoring and control.
This module is widely used in industrial environments requiring high-accuracy temperature measurement, strong isolation, and reliable signal conditioning.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Yokogawa |
| Model | AAT145-S03 |
| Product Type | TC / mV Input Module |
| System Compatibility | Yokogawa CENTUM / FIO systems |
| Function | Thermocouple and millivolt signal acquisition |
| Input Channels | 16 isolated channels |
| Input Types | Thermocouples (various types), mV signals |
| Input Range | Approx. -200 mV to +1750 mV (TC/mV dependent) |
| Signal Isolation | Channel-to-channel and system isolation |
| Cold Junction Compensation | Supported |
| Diagnostics | Sensor break detection supported |
| Accuracy | High-precision industrial measurement |
| Communication | Backplane interface to controller |
| Mounting Type | Rack-mounted module |
| Operating Environment | Industrial control cabinet |
| Humidity Range | 5%–95% non-condensing |
| Dimensions | 107.5 × 130 × 32.8 mm |
| Weight | 0.3 kg |
Function and Working Principle
The AAT145-S03 operates as a low-level analog signal acquisition module.
Its core functions include:
- Receiving thermocouple temperature signals (TC)
- Receiving millivolt (mV) process signals
- Converting analog signals into digital values for DCS processing
- Applying cold junction compensation for accurate temperature readings
- Providing electrical isolation to reduce noise and interference
- Detecting sensor faults such as open-circuit conditions
It acts as a front-end signal conditioning module for temperature measurement systems.
Role in Industrial Control Systems
Within Yokogawa DCS architectures, the AAT145-S03 provides:
- High-accuracy temperature monitoring
- Multi-channel thermocouple data acquisition
- Stable signal conversion for process control loops
- High immunity to industrial electrical noise
- Reliable integration into centralized automation systems
Industrial Applications
The Yokogawa AAT145-S03 is widely used in:
- Furnace and boiler temperature monitoring
- Oil and gas processing plants
- Chemical and petrochemical industries
- Power generation systems
- Metallurgy and thermal processing
- Industrial automation and SCADA systems
Installation and System Integration
Recommended installation practices include:
- Mounting in Yokogawa FIO / CENTUM I/O racks
- Ensuring proper backplane connection
- Using shielded wiring for thermocouple signals
- Correct configuration of TC types in system software
- Performing calibration during commissioning
Compatible System Components
The AAT145-S03 typically works with:
- Yokogawa CENTUM controllers
- Thermocouple sensors (R, S, K, J, T, etc.)
- mV signal transmitters and instrumentation
- Other Yokogawa I/O modules
- Field termination assemblies
- Process monitoring systems
Recommended Alternative Models
| Model | Type | Key Feature | Application |
|---|---|---|---|
| AAT145-S03 | TC/mV input module | High-precision temperature acquisition | DCS systems |
| AAR181-H00/K4A00 | RTD input module | Resistance temperature measurement | Thermal monitoring |
| AAR145-S50 S1 | RTD/POT input module | Multi-signal input | Process control |
| AAI543-S53 | Analog input module | High-accuracy analog acquisition | Industrial measurement |
| AAI835-S53 | Analog I/O module | Multi-channel signal processing | Automation systems |
Key Advantages
- High-precision thermocouple and mV measurement
- 16-channel isolated input design
- Built-in cold junction compensation
- Strong electrical isolation for noise immunity
- Reliable industrial-grade operation
- Seamless integration with Yokogawa DCS systems
Technical FAQs
What is the AAT145-S03 used for?
It is used for thermocouple and millivolt signal measurement in industrial control systems.
How many channels does it support?
It supports up to 16 isolated input channels.
What signals does it handle?
Thermocouples (TC) and millivolt (mV) signals.
Does it support temperature compensation?
Yes, it includes cold junction compensation.
Conclusion
The Yokogawa AAT145-S03 TC/mV Input Module is a high-performance industrial signal acquisition device designed for precise temperature and low-voltage measurement. With strong isolation, multi-channel capability, and accurate signal conditioning, it is widely used in process automation and critical temperature monitoring applications.