Yokogawa NFAR181-S00 CENTUM VP 12-Channel RTD Input Module

Product Overview

The Yokogawa NFAR181-S00 functions as a high-performance 12-channel RTD (Resistance Temperature Detector) input module designed for the CENTUM VP Distributed Control System (DCS). This module captures precise temperature data from field-mounted RTD sensors, converting resistance variations into high-resolution digital values for the Field Control Station (FCS). It occupies a critical role in thermal monitoring across petrochemical, pharmaceutical, and power industries. We supply this unit as 100% Brand New and Original, manufactured in Japan, to ensure the highest thermal measurement integrity for your mission-critical processes.

Part Number Breakdown

The NFAR181-S00 follows Yokogawa’s modular coding system to specify hardware standards:

Technical Specifications

The NFAR181-S00 delivers low-drift temperature acquisition within a compact, rack-mounted profile.

• Number of Channels: 12 independent channels.

• Input Type: RTD (Resistance Temperature Detector).

• A/D Conversion: High-resolution digital processing.

• Dimensions: 2.2 cm (W) x 12.4 cm (D) x 12.6 cm (H).

• Weight: 0.1 kg.

• Data Update Period: 10 ms (High-speed scanning).

• Country of Origin: Japan.

• Condition: Guaranteed 100% Brand New and Original.

Engineering Advantages

The NFAR181-S00 addresses specific thermal sensing challenges through advanced hardware engineering:

• Precision Thermal Mapping: The 12-channel density allows for comprehensive temperature profiling within reactors or distillation columns. This high channel count maximizes the utility of a single I/O slot, reducing the overall hardware footprint in the control cabinet.

• Three-Wire Compensation Support: The internal circuitry automatically compensates for lead-wire resistance. This ensures that the DCS measures the actual resistance of the RTD element rather than the cable length, maintaining accuracy even with long-distance field runs.

• Effective Noise Rejection: Low-level resistance signals often pick up electromagnetic interference (EMI). The NFAR181-S00 incorporates differential input filtering to suppress common-mode noise, providing stable temperature readings in environments with high-power electrical equipment.

• Galvanic System Isolation: The module isolates field-side wiring from the internal DCS backplane. This protection prevents ground loops and electrical transients from affecting the central processor, safeguarding the stability of the entire control network.

FAQs

• What RTD types does the NFAR181-S00 support?

  The module typically supports Pt100, JPt100, and other standard industrial RTD types. You must configure the specific sensor type within the CENTUM VP engineering software to ensure correct linear conversion.

• Can the NFAR181-S00 replace older RTD modules in a legacy system?

  The NFAR181-S00 serves as the current standard for CENTUM VP FIO subsystems. While it maintains a similar footprint to older series, you should verify the compatibility of your existing terminal boards and software revision before installation.

• How does the module handle a broken sensor wire?

  The module includes a burnout detection function. If an RTD wire breaks or the sensor fails, the NFAR181-S00 immediately sends a "Bad" status signal to the DCS, allowing for rapid troubleshooting and preventing erroneous control actions.

• Is this a brand new original Yokogawa part?

  Absolutely. We supply only 100% Brand New hardware. Every NFAR181-S00 arrives in its original Yokogawa Japan factory packaging with matching serial numbers and intact manufacturer seals.