The Yokogawa NFAI143-H50 is a Signal Conditioner from the UTAdvanced series of DIN-rail mounted instruments. It is specifically designed as a Dual-Channel Analog Input Isolator and Converter.<br />
This model is a versatile module that accepts two independent 4 to 20 mA DC analog input signals from field transmitters (e.g., pressure, temperature, flow transmitters). It provides electrical isolation between the input, output, and power supply circuits for each channel, and converts each input into a corresponding 4 to 20 mA DC output signal.
Parameters & Specifications
Category Specification
Model Code NFAI143-H50
Series UTAdvanced Signal Conditioners
Type Dual-Channel Analog Isolator & Converter
Number of Channels 2 (Two independent, isolated channels)
Input Signal (per channel) 4 to 20 mA DC
Output Signal (per channel) 4 to 20 mA DC
Isolation 3-Port Isolation (3-Way Isolation) per channel:
• Input ⇨ Output
• Input ⇨ Power Supply
• Output ⇨ Power Supply
• Channel-to-Channel Isolation
Power Supply 24 V DC (Nominal). Standard operating range: 20 to 55 V DC.
Accuracy ±0.1% of span (Typical for high-performance isolators)
Load Resistance 0 to 550 Ω (for each 4-20mA output signal)
Response Time < 150 ms (to 90% of final value)
Ambient Temperature -20 to 70 °C (-4 to 158 °F)
Mounting DIN Rail Mount (Standard 35 mm DIN rail)
Case Material Plastic (Flame-retardant resin)
Protection Rating IP20 (For indoor use in a protective enclosure only. Not dust or water-resistant.)
LED Indicator Green LED for power status.
Connections Removable screw terminal block for easy wiring.
Safety Certifications CE marked. Complies with relevant EU directives. Often has FM and CSA approvals for general-purpose applications.