



Introduction
The Yokogawa AAI135-H50/K4A00 is a high-precision analog input module for distributed control systems (DCS). It converts analog signals from sensors and transducers into digital signals that can be accurately processed by controllers. Engineered for industrial reliability, the module provides high signal fidelity, low noise interference, and stable performance in electrically noisy or vibration-prone environments. Its compact design allows easy installation in control cabinets, making it ideal for both new installations and retrofits.
Technical Specifications
| Parameter | Details |
|---|---|
| Module Type | Analog Input Module |
| Part Number | AAI135-H50/K4A00 |
| Function | Converts analog field signals to digital signals for DCS controllers |
| Input Signal Type | 4–20 mA, 0–10 V, or other standard analog signals |
| Operating Voltage | 24 VDC nominal |
| Operating Temperature | 0 °C to +55 °C |
| Storage Temperature | –20 °C to +70 °C |
| Mounting | Cabinet or rack installation |
| Dimensions | 107.5 × 32.8 × 130 mm (H × W × D) |
| Weight | 0.3 kg |
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