YOKOGAWA AAI841-H03 S1 Analog I/O Module – High-Precision Centum CS/VP Control

Brand YOKOGAWA

Model YOKOGAWA AAI841-H03 S1

Product Overview

The YOKOGAWA AAI841-H03 S1 is a high-precision analog input/output module engineered by Yokogawa, a global leader in industrial automation and control technologies. As a dedicated component within the Centum CS and Centum VP distributed control systems, the YOKOGAWA AAI841-H03 S1 provides reliable analog signal processing for process industries where measurement accuracy and control integrity are paramount. This module facilitates both analog input acquisition and analog output generation, enabling comprehensive signal conditioning within a single, compact assembly .

The YOKOGAWA AAI841-H03 S1 is designed for seamless integration into standard Yokogawa I/O rack configurations, allowing straightforward installation and replacement without disrupting existing system architecture. The module supports a wide analog input range of -10V to +10V, accommodating diverse sensor types and measurement requirements found in continuous process environments . With an accuracy specification of ±0.05% ±1 digit, the YOKOGAWA AAI841-H03 S1 ensures dependable performance in applications where precise signal conversion directly impacts product quality and operational safety .

Built for the rigorous demands of industrial process control, the YOKOGAWA AAI841-H03 S1 operates reliably across a temperature range of -10°C to +55°C, ensuring consistent functionality in environments that include control rooms, field panels, and equipment enclosures . The module’s robust hardware construction and compact form factor make it suitable for both new installations and retrofit projects within oil and gas, chemical manufacturing, power generation, and water treatment facilities where Yokogawa Centum systems form the automation backbone .

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Description

Technical Specifications

Parameter Name	Parameter Value
Product Model	YOKOGAWA AAI841-H03 S1
Manufacturer	Yokogawa
Product Type	Analog I/O Module
Series	Centum CS / Centum VP
Input Channels	8
Output Channels	8
Analog Input Range	-10V to +10V
Analog Output Range	4-20mA
Accuracy	±0.05% ±1 Digit
Operating Voltage	24V DC
Communication Interface	RS-485
Power Consumption	≤ 5W
Operating Temperature	-10°C to +55°C
Storage Temperature	-40°C to +85°C
Weight	Approximately 0.32 kg
Installation	Yokogawa I/O rack mounting

Main Features and Advantages

Precision Analog Signal Processing

The YOKOGAWA AAI841-H03 S1 delivers exceptional measurement accuracy with a specification of ±0.05% ±1 digit, ensuring that analog signals from field instruments are captured and converted with minimal error . This level of precision supports critical process control loops where temperature, pressure, flow, and level measurements must be trusted for regulatory compliance and product quality. The module’s 12-bit resolution enables detailed data acquisition across the full input range, providing the granularity required for sophisticated control algorithms .

Dual Input and Output Functionality

Unlike single-function I/O modules, the YOKOGAWA AAI841-H03 S1 combines 8 analog input channels with 8 analog output channels in a single assembly . This integrated design reduces rack space requirements and simplifies system architecture by consolidating signal conditioning functions. The analog output range of 4-20mA enables direct control of valves, actuators, and other final control elements without requiring additional output modules, streamlining panel design and reducing overall component count.