Product Overview

The AAI135-H00/K4A00 is a high-performance analog input module engineered for Yokogawa CENTUM VP and CS 3000 integrated control systems. This variant provides eight channels of fully isolated 4–20 mA inputs with integrated HART communication, enabling accurate signal acquisition and advanced field device diagnostics.

The integrated ATK4A-00 KS Cable Interface Adapter supports efficient wiring in high-density instrumentation panels. Individual channel isolation eliminates ground loops and improves measurement reliability in critical industrial environments.

Technical Specifications

Practical Applications

The AAI135-H00/K4A00 is widely used in petrochemical, pharmaceutical, and power generation facilities for high-accuracy monitoring of pressure, temperature, and flow transmitters.

HART functionality enables remote configuration, diagnostics, and device health monitoring directly from the control system, reducing field maintenance workload and improving system availability.

Common Queries

Does this module provide power to field transmitters?
No. The AAI135 is a current input module only. For applications requiring system-supplied loop power for 2-wire transmitters, consider the AAI143 or AAI841 series, depending on loop power architecture.

How does variable input resistance affect loop calculations?
Input resistance increases as loop current decreases to maintain signal stability. For conservative loop design, always use the maximum value of 450 Ω to ensure sufficient transmitter voltage headroom at minimum current.

Is the KS cable interface adapter removable?
The K4A00 option indicates the module is factory-equipped with the ATK4A-00 KS Cable Interface Adapter, optimized for Yokogawa standard KS cables and fast cabinet wiring.