Yokogawa SAI143-S53/A4S10 Analog Input Module Brand New

Overview

The Yokogawa SAI143-S53/A4S10 is a high-integrity analog input module. It integrates with ProSafe-RS safety instrumented systems. The module handles 16 fully isolated 4–20 mA input channels. It suits safety-critical applications like emergency shutdown systems. It also supports fire and gas detection and process interlocks. The A4S10 variant adds enhanced safety and diagnostic features. It meets SIL2 and SIL3 safety requirements.

Technical Specifications

Input Signal Characteristics

• Signal Type: 4–20 mA DC analog current input
• Channels: 16 fully isolated
• Input Impedance: 272.5 Ω at 20 mA, 362.5 Ω at 4 mA
• Accuracy: ±16 μA (0.05–23 mA), ±32 μA (<0.05 mA)
• Temperature Drift: ±16 μA per 10°C
• Voltage Drop (Protection Circuit): Max 0.45 V

Transmitter Power Supply

• Voltage Output: 19.0–25.5 VDC
• Current Limit: 25 mA per channel
• Transmitter Compatibility: 2-wire or 4-wire, jumper configurable

Communication & Protocols

• HART Protocol: Supports one device per channel via one modem
• Safety Compliance: SIL2/SIL3 certified
• Diagnostics: Enhanced diagnostics and fault detection

Isolation & Redundancy

• Channel Isolation: Galvanic isolation per channel
• System Isolation: 500 V AC with dedicated signal cable
• Redundancy: Supports dual redundant configuration

Electrical & Mechanical

• ​Mounting: Rack-mounted or DIN rail
• Connectors: MIL connectors or pressure clamp terminals
• Ambient Temperature: Use restrictions apply above 60°C