Product Description

The AAI143-S03/A4S00 is a ruggedized 16-channel analog input module designed for the Yokogawa CENTUM VP Distributed Control System. This variant incorporates ISA-71.04 G3 conformal coating, making it suitable for harsh industrial environments with corrosive gases, high humidity, and wide temperature variations.

The module provides fully isolated 4–20 mA signal acquisition, ensuring stable and accurate data transfer from field instruments to the DCS while maintaining high system integrity in electrically and chemically aggressive conditions.

Key Features

• G3 Environmental Protection: S03 designation indicates ISA G3 conformal coating for corrosive atmospheres

• Full Galvanic Isolation: 16 isolated channels eliminate ground loops and protect system electronics

• Redundancy Ready: Supports dual-redundant configurations for high-availability control systems

• Optimized Cabinet Integration: /A4S00 interface supports secure and efficient wiring in Yokogawa cabinets

Technical Specifications

Industrial Applications

The AAI143-S03/A4S00 is widely used in environments where corrosion resistance and reliability are critical, including:

• Wastewater and water treatment plants

• Chemical and petrochemical facilities

• Offshore oil and gas platforms

The G3 conformal coating makes it particularly suitable for high-sulfur, high-humidity, and coastal installations.

Technical FAQ

Q: What does the G3 option protect against?
A: The G3 conformal coating (ISA-71.04 severity level G3) protects the module from corrosive gases such as hydrogen sulfide (H₂S), nitrogen oxides (NOₓ), and chlorine, significantly extending service life in harsh environments.

Q: Is this module compatible with standard AAI143 terminal boards?
A: Yes. It uses the standard AAI143 mechanical footprint. However, the terminal board and cabling should also meet the environmental requirements of the installation site.