Product Overview

The Yokogawa NFAR181-S00 S2 is a high-precision resistance temperature detector (RTD) input module specifically engineered for the STARDOM autonomous controller series. This module serves as a critical interface for temperature sensing, converting resistance signals from field-mounted RTDs into digital data for process control and monitoring. It is designed to handle up to 12 channels (note: correction from 4-channel to standard 12-channel density for this series) of isolated inputs, ensuring high-fidelity signal acquisition even in electrically noisy industrial environments.

By providing dedicated linearization for a variety of sensor types, including Pt100, the NFAR181-S00 S2 eliminates the need for external signal conditioning. Its architecture is optimized for integration into the FCN (Field Control Node) or FCJ (Field Control Junction) units, making it an essential component for distributed control and remote I/O applications.

Technical Specifications

• Manufacturer: Yokogawa

• Model Number: NFAR181-S00 S2

• Module Type: RTD Input Module

• Number of Channels: 12 channels, isolated

• Supported Sensor Types: Pt100, Pt500, Pt1000, JPt100, Ni100, Ni120, Cu10, Cu50, Cu100

• Measurement Range: -200°C to +850°C (Sensor dependent)

• A/D Resolution: 16-bit

• Accuracy: ±0.15% of span (for Pt100)

• Data Refresh Cycle: 100 ms (for all 12 channels)

• Weight: 0.20 kg

• Dimensions: 32.8 mm x 106.3 mm x 130 mm

• Communication Interface: Internal System Bus

• Origin: Japan

Key Technical Characteristics

• Flexible Sensor Compatibility: Supports standard 2-wire, 3-wire, and 4-wire RTD configurations, allowing for precise lead-wire resistance compensation.

• Advanced Noise Rejection: Features a high common-mode rejection ratio (CMRR) and galvanic isolation to protect the controller logic from field-side surges and electromagnetic interference.

• Integrated Diagnostics: The module continuously monitors for sensor burnout (broken wire) and short circuits, providing immediate feedback to the control system to prevent erroneous process decisions.

• Optimized Thermal Stability: Engineered to maintain high accuracy across a broad operating temperature range, ensuring reliable performance in unconditioned field cabinets.

• Simplified Integration: Fully compatible with STARDOM Logic Designer software, enabling rapid configuration of engineering units, scaling, and alarm limits.

• Broad Industry Application: Ideally suited for temperature monitoring in petrochemical refining, pharmaceutical clean rooms, power plant boiler systems, and food processing pasteurization.