Introduction
The Yokogawa SAI143-H33/PRP S2 Analog Input Module is a high-integrity, safety-oriented signal acquisition module designed for advanced distributed control and safety instrumented systems. Engineered for mission-critical environments, it combines precision analog input processing with redundant-ready architecture, making it ideal for plants that demand continuous uptime and dependable measurement accuracy.
Its PRP (parallel redundancy-related configuration) option enhances system availability, ensuring stable performance even in complex industrial control networks.
Technical Specifications & Physical Data
| Parameter | Details |
|---|---|
| Manufacturer | Yokogawa |
| Model Number | SAI143-H33/PRP S2 |
| Module Type | Analog Input Module |
| Input Channels | 16 channels (module isolated) |
| Input Signal | 4–20 mA DC |
| Permissible Input Range | 0–25 mA |
| Accuracy | ±16 µA |
| Resolution | 16-bit equivalent |
| Data Update Rate | 40 ms |
| Input Impedance | ~250 Ω (active range dependent) |
| Isolation | Channel-to-system isolation |
| Withstand Voltage | 1.5 kV AC |
| Power Consumption | ~320 mA @ 5V / 550 mA @ 24V |
| Operating Temperature | -20°C to 70°C |
| Storage Temperature | -40°C to 85°C |
| Weight | approx. 0.34–0.39 kg |
| Dimensions (HxWxD) | approx. 15 × 13 × 4 cm |
| Redundancy Support | PRP / redundant-ready architecture |
| Mounting | Rack-based control system |
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