Description
1. Product Description
The YOKOGAWA SAI143-H63 is a 16-channel analog input module designed for Yokogawa’s ProSafe-RS Safety Instrumented System (SIS), offering high precision and reliability for critical industrial applications. Engineered for 4–20 mA signals (with a permissible range of 0–25 mA), the SAI143-H63 supports HART communication and features module-level isolation to protect against electrical interference. Its compact design (115 mm × 22.5 mm × 90 mm) and DIN rail mounting enable easy integration into safety-critical systems in industries such as oil and gas, chemical processing, and power generation. With a wide operating temperature range (-20°C to 70°C) and ISA G3 compliance, the module withstands harsh environments while delivering ±16 μA accuracy (0.05–23 mA input range).
2. Technical Parameters
| Parameter | Specification |
|---|---|
| Type | Analog input module (ProSafe-RS SIS) |
| Channels | 16 (module-isolated) |
| Input Range | 4–20 mA (permissible: 0–25 mA) |
| Accuracy | ±16 μA (0.05–23 mA) |
| Input Impedance | 250 Ω (power-on), 500 kΩ minimum (power-off) |
| Data Update Frequency | 40 ms |
| Transmitter Power Supply | 16.15–26.4 V DC (25 mA current limit) |
| Withstand Voltage | 1.5 kV AC (input signal to system, 1 minute) |
| Power Consumption | 5V: 320 mA; 24V: 550 mA |
| Operating Temperature | -20°C to 70°C (storage: -40°C to 85°C) |
| Humidity | 5–95% RH (non-condensing) |
| Weight | 0.34–0.39 kg (depending on terminal type) |
| Compatibility | Yokogawa ProSafe-RS SIS |
SAI143-H63
3. Advantages and Features
- High Precision: ±16 μA accuracy (0.05–23 mA) for critical process measurements.
- HART Communication: Enables remote configuration and diagnostics of smart transmitters.
- Module-Level Isolation: 1.5 kV AC protection against ground loops and interference.
- Dual-Redundancy Support: Compatible with ProSafe-RS redundant systems for fault tolerance.
- Wide Environmental Range: Operates in -20°C to 70°C (ISA G3 compliance for corrosive environments).
- Flexible Wiring: Supports pressure clamp terminals, MIL cables, or dedicated signal adapters.
4. Application Areas and Cases
- Industry Applications: Oil and gas, chemical processing, power generation, pharmaceuticals.
- Use Cases:
- Refinery Safety Systems: Monitors pressure/temperature transmitters in a distillation unit, with HART-enabled diagnostics reducing downtime by 30% (case study: 2024 refinery upgrade project).
- Chemical Reactor Control: 16-channel isolation ensures safe signal monitoring in a polymerization process, meeting IEC 61508 SIL 3 requirements.
5. Competitor Comparison
Compared to similar analog input modules:
- Higher Channel Density: 16 channels (vs. 8–12 channels in most 竞品), reducing panel space by 30%.
- Enhanced Safety Compliance: Certified for ProSafe-RS SIS (SIL 3 capable), surpassing basic industrial modules.
- Extended Temperature Range: Operates at -20°C to 70°C (vs. typical 0°C to 50°C in 竞品), suitable for outdoor/extreme environments.
SAI143-H63
6. Selection Recommendations
- System Compatibility: Verify ProSafe-RS SIS firmware (≥R1.02.00) and module redundancy needs.
- Environment: Choose -H63 suffix for ISA G3 corrosion resistance (vs. standard models).
- Signal Type: Use 2/4-wire configuration via channel pins (2-wire with transmitter power supply control).
- Budget: Balance channel density (16 channels) with project scale (cost-effective for SIL-rated systems).
7. Precautions
- Installation: Secure DIN rail mounting; avoid liquid exposure (IP20 protection).
- Wiring: Use shielded cables for HART signals; maintain 24V DC stability (±10% tolerance).
- Maintenance: Regularly update HART device configurations; replace every 7–10 years (Yokogawa guidelines).
- Safety: Follow IEC 61508 for SIL-rated applications; disconnect power before servicing.
