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YOKOGAWA NFAR181-S00 S2 RTD Input Module

YOKOGAWA NFAR181-S00 S2 RTD Input Module

The YOKOGAWA NFAR181-S00 S2, also cataloged as the NFAR181 RTD Input Module, operates as a dedicated hardware component for temperature sensing within N-IO (Network I/O) platforms. This module provides direct...

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SKU: NFAR181-S00 S2
Proveedora: Yokogawa
tipo: RTD Input Module
Related Series:

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The YOKOGAWA NFAR181-S00 S2, also cataloged as the NFAR181 RTD Input Module, operates as a dedicated hardware component for temperature sensing within N-IO (Network I/O) platforms. This module provides direct physical/electrical execution for acquiring resistive signals from field-mounted Resistance Temperature Detectors (RTDs), converting thermal data into digital values for DCS process control and monitoring.

Hardware Specifications

Parameter Specification
Model NFAR181-S00 S2
Brand YOKOGAWA
Origin JAPAN
Weight 0.3 kg
Dimensions 2.2 cm x 12.4 cm x 12.6 cm
Operating Temp -20 to 70 deg C
Power Consumption 1.8 W (Typical)
Input Type RTD (Resistance Temperature Detector)
Isolation Channel-to-channel

Channel-to-Channel Isolation and Process Measurement

The NFAR181-S00 S2 utilizes channel-to-channel isolation to prevent potential interference between multiple temperature measurement loops. This electrical design suppresses common-mode noise and ground loops which are common in distributed thermal monitoring architectures. The module supports precise signal conversion, maintaining measurement integrity by filtering incoming resistance fluctuations before data transmission across the N-IO backplane bus.

Frequently Asked Questions

Q: Does this module require external cold junction compensation (CJC) for RTD measurements?

A: No, cold junction compensation is required for thermocouples; the NFAR181 is designed specifically for RTD inputs, which utilize lead wire resistance compensation instead.

Q: Is the NFAR181-S00 S2 compatible with various RTD types such as Pt100?

A: Yes, this module supports standard industrial RTD sensor types; verify the specific sensor configuration settings within the engineering software to match the field device specifications.

Field Installation Guidelines

  • Ensure the N-IO node is properly grounded before module installation to protect sensitive electronic components from electrostatic discharge (ESD).
  • Use appropriate three-wire or four-wire cabling configurations for the RTD inputs to minimize measurement errors caused by lead wire resistance.
  • Verify the wiring connection on the terminal block, ensuring that the sensor leads are securely fastened to the designated terminals to prevent signal drift.
  • Route RTD signal cables separately from high-voltage power lines to mitigate electromagnetic interference and ensure measurement stability.
  • Confirm that the module is fully seated in the N-IO base plate and the locking tab is engaged to guarantee reliable backplane bus communication.