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NFAI135

The Yokogawa NFAI135 is an 8-channel isolated analog input module designed for industrial automation systems, particularly within Yokogawa's STARDOM FCN/FCJ autonomous controllers. This module is ideal for applications requiring precise measurement of analog signals, such as temperature, pressure, and flow monitoring.

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Key Specifications

Model: NFAI135

Channels: 8 individually isolated input channels

Input Signal: 4–20 mA (current input)

Allowable Input Current: Up to 25 mA

Input Resistance:

Power ON: 250 Ω

Power OFF: ≥500 kΩ

Accuracy: ±0.1% of full scale

Data Refresh Cycle: 10 ms

Step Response Time: 100 ms

Temperature Drift: Max. ±0.01% per °C

Withstand Voltage:

Between input/output and system: 500 V AC for 1 minute

Between channels: 500 V AC for 1 minute

Transmitter Power Supply:

Voltage: 22.8 to 26.4 V DC

Current Limit: 27 mA

Operating Temperature: -20°C to +60°C

Power Consumption: ≤1.5 W

Protection Rating: IP20

Communication Interface: RS-485

Operating Voltage: DC 12V to 24V

✅ Key Features

High Accuracy: Provides precise measurements with an accuracy of ±0.1% of full scale, ensuring reliable data for control and monitoring applications.

Fast Response Time: Offers a data refresh cycle of 10 ms and a step response time of 100 ms, suitable for dynamic process control.

Wide Temperature Range: Operates effectively in environments ranging from -20°C to +60°C, accommodating various industrial conditions.

Robust Isolation: Features 8 individually isolated channels with a withstand voltage of 500 V AC, enhancing noise immunity and system protection.

Efficient Power Consumption: Consumes less than 1.5 W, contributing to energy efficiency in system design.