Yokogawa AAT141-S50 16-Channel Isolated TC/mV Input Module

The Yokogawa AAT141-S50 is a 16-channel isolated TC/mV input module designed to provide precise temperature measurement and signal acquisition in industrial automation applications. It supports both thermocouple (TC) and millivolt (mV) signals, ensuring high accuracy in temperature monitoring for process control and other critical industrial processes. With isolated channels for each input, this module ensures excellent signal integrity and reliable operation, even in complex systems.

This module is ideal for integration with Yokogawa’s automation platforms, enabling seamless signal processing and diagnostics. Its robust design and high accuracy make it a perfect fit for demanding environments.

Key Features

16 Isolated Input Channels:
The AAT141-S50 provides 16 independent, isolated input channels. This ensures that each channel operates separately, offering enhanced accuracy and reducing the risk of signal interference.
Versatile Input Signal Types:
The module supports thermocouple (TC) signals, including Type J, K, E, B, R, S, T, and N, as well as millivolt (mV) signals in the ranges of -100 to 150 mV and -20 to 80 mV. This versatility allows it to be used in various industrial applications.
High Precision Measurement:
With a ±30 µV accuracy for TC and ±80 µV for mV signals, the AAT141-S50 ensures high-precision measurements. This level of accuracy is critical for applications that require detailed temperature monitoring.
Reference Junction Compensation:
The AAT141-S50 features ±1°C reference junction compensation, which accounts for any temperature difference between the sensor and the system, ensuring accurate temperature readings.
Temperature Drift Compensation:
The module compensates for temperature drift with +80 µV/10°C for mV (-100 to 150 mV) input and +30 µV/10°C for TC (-20 to 80 mV) input. This helps maintain measurement accuracy in varying environmental conditions.
Configurable Burn-out Detection:
The module provides configurable burn-out detection for each channel, allowing the system to detect signal loss within 60 seconds. This feature helps identify faulty sensors and prevent inaccurate readings.
Fast Data Update Rate:
The AAT141-S50 has a 1-second data update period, making it suitable for fast response applications where real-time temperature monitoring is crucial.
High Withstanding Voltage:
The module can withstand up to 1500 VAC between input and system for 4 minutes, ensuring protection against electrical surges and improving the module’s durability in harsh environments.

Technical Specifications

Parameter	Value
Model	AAT141-S50
Input Channels	16 isolated channels
Input Signal Types	Thermocouple (TC) Types J, K, E, B, R, S, T, N
	Millivolt (mV) -100 to 150 mV, -20 to 80 mV
Allowable Input Voltage	±5 V
Withstanding Voltage	1500 VAC (4 minutes)
Input Resistance	Power ON: 2 MΩ, Power OFF: ≥2 MΩ
Accuracy	TC: ±30 µV, mV: ±80 µV (for -100 to 150 mV), ±30 µV (for -20 to 80 mV)
Reference Junction Compensation Accuracy	±1°C
Temperature Drift	mV (-100 to 150 mV): +80 µV/10°C
	TC (-20 to 80 mV): +30 µV/10°C
Data Update Period	1 second
Burn-out Detection	Configurable (UP/DOWN), detection time: 60 seconds
Maximum Current Consumption	450 mA (5V DC)
Weight	0.3 kg
Suffix Codes	-S: Standard type, 5: No explosion protection, 0: Basic type