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- Yokogawa
- AET4D-00
- Thermocouple Terminal Block
- Japan
- 482.6 x 88.1 x 85 mm
- 1.8 kg
- Xiamen, China
- New & In Stock
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We have a 10-year logistics and express cooperation agreement, so our products can be shipped to any place in the world.
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Our products are imported in bulk from the place of origin. Because of the cooperative relationship, our products are all original and 100% new.
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We provide 7*24 hours service to our customers. We will be there whenever you need us.
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All our products are priced very favorably because we have our own warehouse and supply.
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Product Overview
The Yokogawa AET4D-00 Thermocouple Terminal Block is an industrial signal termination module used in Yokogawa distributed control systems (DCS). It is designed to interface thermocouple field wiring with system I/O modules, ensuring accurate temperature signal transmission in automation and process control environments.
This module provides a stable and organized connection point for thermocouple inputs, helping maintain signal integrity and reducing wiring complexity in control cabinets.
Technical Specifications
| Parameter | Details |
|---|---|
| Manufacturer | Yokogawa |
| Model | AET4D-00 |
| Product Type | Thermocouple Terminal Block |
| Function | Thermocouple signal termination and wiring interface |
| Supported Signal Type | Thermocouple (Type K, J, T, E, etc.) |
| Channel Capacity | 16-channel (typical configuration) |
| Connection Type | Screw terminal (M3/M4 depending on system design) |
| Signal Isolation | Channel-to-channel electrical isolation |
| Cold Junction Compensation | Supported via system I/O module |
| Dimensions | 482.6 × 88.1 × 85 mm |
| Weight | 1.8 kg |
| Mounting Type | Rack-mounted / cabinet-mounted |
| System Compatibility | Yokogawa CENTUM VP / CENTUM CS / FIO systems |
| Operating Environment | Industrial control cabinets |
| Material | Industrial-grade PCB and metal housing |
Function and Working Principle
The AET4D-00 functions as a passive thermocouple signal interface between field sensors and DCS input modules.
Its working process includes:
- Receiving low-voltage thermocouple signals from field devices
- Terminating and organizing multi-channel thermocouple wiring
- Routing signals to Yokogawa analog input modules
- Supporting cold junction compensation via connected I/O system
- Ensuring stable signal transmission with minimal noise interference
Since thermocouples generate millivolt-level signals, the terminal board plays a critical role in maintaining signal accuracy and stability before conversion in the control system.
Role in Industrial Control Systems
Within Yokogawa automation systems, the AET4D-00 serves an important interface function:
- Acts as the central termination point for thermocouple wiring
- Connects temperature sensors to DCS analog input modules
- Improves wiring organization inside control cabinets
- Reduces installation errors and simplifies maintenance
- Ensures stable temperature signal acquisition in process control systems
It is widely used in temperature monitoring architectures in industrial plants.
Industrial Applications
The Yokogawa AET4D-00 is commonly used in:
- Distributed Control Systems (DCS)
- Oil and gas processing plants
- Petrochemical and refinery systems
- Power generation facilities
- Furnace and boiler temperature monitoring
- Industrial process temperature measurement systems
It is especially suitable for environments requiring precise and stable temperature monitoring.
Installation and System Integration
For optimal performance, the AET4D-00 should be installed as follows:
- Mounted in industrial control cabinets or racks
- Connected directly to Yokogawa thermocouple input modules
- Field thermocouples wired into designated terminal points
- Proper shielding used to reduce electromagnetic interference
- Organized wiring layout for maintenance efficiency
Correct installation is critical to ensure measurement accuracy and system stability.
Compatible System Components
The AET4D-00 typically works with:
- Yokogawa thermocouple input modules
- CENTUM / FIO analog input systems
- Field thermocouple sensors (Type K, J, T, etc.)
- DCS controllers and signal processing units
- Industrial signal wiring harnesses
These components rely on the terminal block for stable temperature signal routing.
Recommended Alternative Models
| Model | Type | Key Feature | Application |
|---|---|---|---|
| AET4D-05 | Thermocouple Terminal Block | Enhanced configuration | Standard temperature systems |
| AET4D-06 | Thermocouple Terminal Block | Improved stability design | High-accuracy systems |
| AER4D-00 | Analog Terminal Board | General signal termination | Mixed signal systems |
| AAI series modules | I/O Modules | Direct signal processing | Temperature acquisition systems |
| ADV series modules | Analog Input Modules | High-resolution measurement | Process control systems |
Key Advantages
- Stable thermocouple signal termination
- Reduces wiring complexity in control cabinets
- Improves maintenance efficiency
- High compatibility with Yokogawa DCS systems
- Reliable performance in harsh industrial environments
- Supports structured temperature monitoring systems
Technical FAQs
What is the main function of the AET4D-00?
It connects thermocouple sensors to Yokogawa DCS input modules for temperature measurement.
Is it an active device?
No, it is a passive terminal block used for signal wiring and termination.
Does it handle signal conversion?
No, signal conversion is done in the I/O modules, not the terminal board.
Conclusion
The Yokogawa AET4D-00 Thermocouple Terminal Block is a critical interface component in industrial temperature measurement systems. It ensures stable, accurate, and organized connection between thermocouple sensors and DCS input modules.
For engineers and system integrators, it provides a reliable foundation for building precise and maintainable temperature monitoring architectures in industrial automation environments.