Yokogawa | AAT141-S00 | 16-Channel | TC/mV Input Module

Yokogawa AAT141-S00 16-Channel TC/mV Input Module

The Yokogawa AAT141-S00, also cataloged as the AAT141 TC/mV Input Module, operates as a dedicated hardware component for thermocouple and millivolt signal acquisition within Yokogawa distributed control system platforms. The module provides 16 isolated input channels with per-channel signal configuration, allowing independent measurement of thermocouple and low-level millivolt inputs used in process monitoring applications.

Suffix Breakdown & Model Matrix

The ordering code AAT141-S00 identifies a specific configuration within the Yokogawa AAT141 input module family.

• AAT141 designates the 16-channel TC/mV input module.
• S indicates the standard module type.
• 0 is a fixed designation code.
• 0 specifies the basic version without explosion protection.

Hardware Specifications

Cold Junction Compensation and Thermocouple Processing

The AAT141-S00 is designed for direct acquisition of thermocouple and millivolt signals commonly used in temperature monitoring applications. Each channel can be individually configured, allowing mixed thermocouple and millivolt measurement strategies within a single module.

For thermocouple inputs, the module performs cold junction compensation (CJC) to account for reference junction temperature variations. This function enables conversion of low-level thermoelectric signals into process temperature values while maintaining the specified measurement accuracy.

Support for thermocouple types J, K, E, B, R, S, T, and N provides compatibility with a wide range of industrial temperature sensing applications.

Frequently Asked Questions

Q: Can different signal types be used simultaneously on the module?
A: Yes. Each of the 16 channels can be configured individually for thermocouple or millivolt input operation.

Q: Does the module support thermocouple burnout detection?
A: Yes. Automatic sensor burnout detection is provided for all channels.

Q: Is the module suitable for redundant controller architectures?
A: Yes. The AAT141-S00 supports system dual-redundancy configurations.

Field Installation Guidelines

• Use appropriate thermocouple extension cable matching the installed thermocouple type.
• Route thermocouple and millivolt wiring separately from power conductors and relay output circuits.
• Maintain correct polarity on all thermocouple connections.
• Verify channel configuration before energizing the system.
• Ensure total loop resistance does not exceed the specified 1000 Ohm limit.
• Confirm sensor burnout diagnostics during commissioning procedures.
• Ground cable shields according to the Yokogawa system grounding specification to minimize noise pickup.