YOKOGAWA NFAI143-H50

YOKOGAWA NFAI143-H50

The Yokogawa NFAI143-H50 is a high-performance 16-channel isolated analog input module designed for CENTUM VP and STARDOM FCN/FCJ distributed control systems. Optimized for 4–20 mA current signal acquisition with HART communication, it delivers exceptional accuracy and stability for process automation in oil & gas, chemical, power, and water treatment industries.

Model Code Decoding: NFAI143-H50

• NFAI: Yokogawa analog input module series
• 143: 16-channel isolated 4–20 mA input type
• H: Supports HART protocolfor digital communication & diagnostics
• 5: Non-explosion-proof design
• 0: Basic configuration without additional options

Key Technical Specifications

• Input Channels: 16 galvanically isolated channels
• Input Signal: 4–20 mA DC (HART-enabled)
• Accuracy: ±0.1% of full scale (FS)
• Resolution: 16-bit A/D conversion
• Data Update Cycle: 10 ms
• Step Response Time: 100 ms
• Input Resistance: 250 Ω (power ON); ≥500 kΩ (power OFF)
• Isolation Voltage: 1500 V AC (input-to-system, 1 minute)
• Temperature Drift: ±0.01%/°C (max)
• Transmitter Supply: 24.0–25.5 V DC (25 mA limit)
• Power Consumption: 230 mA (5 V DC); 120 mA (24 V DC)
• Operating Temperature: -20°C to +85°C
• Protection Grade: IP67 (dust & water resistant)