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Product Introduction
The Yokogawa AAT145-S00 is a high-precision thermocouple/millivolt (TC/mV) input module designed for use within the Yokogawa CENTUM VP and ProSafe-RS systems. This module is engineered to deliver accurate and reliable temperature measurements by accepting inputs from various types of thermocouples or millivolt signal sources. With a robust design that ensures long-term stability and immunity to electrical noise, the AAT145-S00 is ideal for mission-critical industrial applications.
As part of Yokogawa’s advanced control and safety system portfolio, this module is tailored for integration in distributed control systems (DCS) and safety instrumented systems (SIS), providing consistent analog signal processing with high resolution and advanced diagnostics.
Product Specifications
| Parameter | Specification |
|---|---|
| Model Number | AAT145-S00 |
| Input Type | Thermocouple (K, J, T, E, R, S, B, N, etc.), mV |
| Input Channels | 8 channels (independent, isolated) |
| Input Signal Range | ±100 mV |
| Resolution | 16-bit |
| Input Impedance | >10 MΩ |
| Accuracy | ±0.1% of full scale |
| Cold Junction Compensation | Built-in |
| Channel Isolation | 1500 V AC (between channels and ground) |
| Power Supply Voltage | Supplied by I/O rack (typically 24 VDC) |
| Operating Temperature | 0 to 55°C |
| Storage Temperature | -20 to 70°C |
| Humidity Range | 5% to 95% RH (non-condensing) |
| Dimensions (W x H x D) | 32.8 × 130 × 127.2 mm |
| Weight | 0.3 kg |
| Mounting | Mounted in I/O base unit (card-type installation) |
| Standards Compliance | CE, CSA, ATEX (on selected versions) |
Product Applications
The AAT145-S00 TC/mV Input Module is widely used across industries requiring precise thermal or low-level voltage measurement. Typical application areas include:
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Petrochemical Plants: Monitoring critical temperatures in reactors and heat exchangers.
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Power Generation: Supervising turbine and boiler temperatures.
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Pharmaceutical Manufacturing: Ensuring accurate environmental and process temperature control.
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Steel and Metallurgy: Measuring high-temperature furnace outputs and metal processing stages.
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Food & Beverage: Precision temperature logging during pasteurization and storage.
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Water Treatment Plants: Monitoring chemical reactions and process consistency.
Its compatibility with various thermocouple types allows flexible deployment across a wide range of thermal measurement scenarios.
Product Advantages
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High Accuracy & Stability: Ensures accurate readings in harsh industrial environments.
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Multiple TC Type Support: Compatible with a wide range of thermocouples for maximum flexibility.
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Compact and Lightweight: Easy installation in space-constrained control cabinets.
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Advanced Diagnostics: Real-time failure detection, open sensor detection, and channel diagnostics.
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Galvanic Isolation: Provides electrical isolation between channels to prevent interference and signal degradation.
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Integrated CJC: Built-in cold junction compensation improves temperature accuracy.
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Scalable Integration: Seamlessly integrates with Yokogawa’s DCS and SIS systems for scalable process automation.
Frequently Asked Questions (FAQ)
-
What types of thermocouples are supported by the AAT145-S00?
The module supports a wide range of thermocouples including K, J, T, E, R, S, B, and N. -
Can I use millivolt input signals with this module?
Yes, the AAT145-S00 supports millivolt input signals in the range of ±100 mV. -
Is cold junction compensation available on the module?
Yes, the module features built-in cold junction compensation for accurate temperature measurement. -
How many input channels does the AAT145-S00 provide?
It provides 8 isolated input channels. -
What is the resolution of the AAT145-S00?
It offers 16-bit resolution for high-precision measurements. -
Is the AAT145-S00 suitable for safety-critical applications?
Yes, it is compatible with ProSafe-RS systems and suitable for use in safety instrumented systems (SIS). -
Can this module operate in high-temperature environments?
The operating range is 0 to 55°C, which suits most industrial settings. -
Does it support diagnostic features?
Yes, it includes real-time diagnostics for fault detection and open sensor indication. -
What is the isolation voltage of the module?
Each channel is isolated up to 1500 V AC from the ground. -
What system platforms are compatible with the AAT145-S00?
The module is designed for use with Yokogawa’s CENTUM VP and ProSafe-RS systems.
Related Models from the Same Series
| Model | Description | Input Type | Channels |
|---|---|---|---|
| AAT145-S00 | TC/mV Input Module | Thermocouple, mV | 8 |
| AAT141-S00 | Universal AI Module | Current, Voltage | 8 |
| AAT135-S00 | RTD Input Module | RTD | 8 |
| AAT231-S00 | Digital Input Module (High Voltage) | Digital (24–250VDC) | 16 |
| AAT232-S00 | Digital Output Module | Relay Output | 16 |
| AAT154-S00 | Analog Output Module | 4-20 mA | 8 |
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