



Introduction — Reliable Analog Input with Enhanced Wiring
The Yokogawa AAI143-S03/A4S00 Analog Input Module provides precise and stable 4–20 mA signal acquisition for distributed control systems (DCS). Featuring 8 isolated channels and the A4S00 pressure-clamp terminal interface, this module ensures secure and reliable wiring while simplifying installation and maintenance. Ideal for standard industrial applications, the S03/A4S00 variant offers consistent performance for process control loops without HART communication.
Technical Specifications — Performance & Physical Profile
| Specification | Description |
|---|---|
| Module Type | 8-channel Isolated Analog Input Module (Standard, non-HART, A4S00 terminal) |
| Input Signal | 4–20 mA DC |
| Number of Channels | 8 isolated inputs |
| Input Impedance | 250 Ω |
| Accuracy | ±0.1% of span |
| Update Rate | 10 ms per channel |
| Isolation Voltage | 1500 V AC (input-to-system) |
| Power Supply | 24 V DC nominal |
| Operating Temperature | –25°C to +70°C |
| Dimensions | 130 mm × 25 mm × 180 mm |
| Weight | ~0.32 kg |
| Terminal Interface | A4S00 dual pressure-clamp for secure wiring |
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