Yokogawa AAT145-S00 TC/RTD Input Module

The Yokogawa AAT145-S00 is a highly efficient TC/RTD Input Module that provides isolated channels for accurate temperature and resistance measurements. This module supports multiple input signal types, including thermocouple (TC), resistance temperature detector (RTD), and potentiometer (POT). It is ideal for industrial automation systems, offering excellent reliability and high precision.

Key Features and Technical Specifications

The Yokogawa AAT145-S00 module accommodates up to 16 isolated channels, ensuring independent signal processing for each input. The detailed technical specifications are as follows:

Technical Specifications

Specification	Details
Manufacturer	Yokogawa
Model	AAT145-S00
Product Type	TC/RTD Input Module (Isolated Channels)
Input Channels	16 isolated channels
Supported Input Signals	TC: Type J, K, E, B, R, S, T, N; mV: -100 to 150 mV, -20 to 80 mV
	RTD: Pt100 (3-wire type), Potentiometer (100 Ω to 10 kΩ)
Input Voltage	+5 V
Input Resistance	Power ON: 1 MΩ or larger, Power OFF: 1 MΩ or larger
Switching Input Signals	TC/mV or RTD/POT can be set individually for each channel
Accuracy	±40 μV for TC, ±150 mΩ for RTD, ±0.2% FS for POT
Allowable Total Resistance	1000 Ω or less
Reference Junction Compensation Accuracy	±1°C
Data Update Period	1 second
Burn-out Detection	Detection time: 60 s, settable for all channels
Temperature Drift	±80 μV/10°C for TC, ±0.3 Ω/10°C for RTD, ±0.4%/10°C for POT
Maximum Current Consumption	350 mA (5 V DC)
Withstanding Voltage	Between input and system: 500 V AC (1500 V AC for a single card),
	Between input channels: 200 V AC
Weight	0.3 kg
External Connection	Dedicated cable (KS1)

Description

The Yokogawa AAT145-S00 module offers 16 isolated input channels that allow for individual signal processing. You can configure each channel for various types of inputs, including TC signals (Type J, K, E, B, R, S, T, and N), RTD signals (Pt100, 3-wire type), and POT signals (ranging from 100 Ω to 10 kΩ).

Each channel can be set independently to support either TC/mV or RTD/POT inputs, providing users with flexibility. The module’s accuracy includes ±40 μV for TC signals, ±150 mΩ for RTD signals, and ±0.2% FS for potentiometer inputs.

This module operates with a 5 V DC power supply, drawing a maximum current of 350 mA. It features an input resistance of 1 MΩ or larger when powered on, ensuring minimal interference during measurement. Additionally, the reference junction compensation accuracy is ±1°C, contributing to the module’s overall precision.

The module supports burn-out detection, with a 60-second detection time for all channels. It also features a data update period of 1 second, making it well-suited for real-time monitoring and control applications.

Robust Design for Industrial Use

The Yokogawa AAT145-S00 withstands demanding environments. It has a withstanding voltage of 500 V AC between the input and the system, and 200 V AC between input channels. This ensures reliability, even in situations where voltage spikes or transients occur. The temperature drift is minimal, ensuring stable operation in fluctuating temperature conditions: ±80 μV/10°C for TC, ±0.3 Ω/10°C for RTD, and ±0.4%/10°C for POT.

The module’s weight is 0.3 kg, making it easy to integrate into existing systems without adding excessive bulk. For external connections, it uses a dedicated cable (KS1) for streamlined installation.

Applications

The Yokogawa AAT145-S00 is widely used in industries requiring precise temperature and resistance measurements, including:

Industrial Automation: For temperature monitoring in manufacturing processes.
Energy Systems: In power generation and transmission applications.
Environmental Monitoring: For controlling and measuring environmental conditions.
HVAC Systems: To monitor heating, ventilation, and air conditioning processes.

Conclusion

The Yokogawa AAT145-S00 is an advanced, versatile TC/RTD input module with 16 isolated channels. Its support for multiple input types, coupled with excellent accuracy and real-time performance, makes it an ideal choice for industrial applications that require reliable temperature and resistance measurements.