NFAI141-S50 | Yokogawa | CENTUM VP 16-Channel Analog Input Module

Product Overview

The Yokogawa NFAI141-S50 functions as a high-density analog input interface for the CENTUM VP Distributed Control System (DCS). This 16-channel module captures critical process variables by accepting standard current and voltage signals, including 4-20 mA and wide-range ±10 V DC inputs. It provides the high-speed data acquisition necessary for real-time monitoring of pressure, flow, and temperature transmitters in complex industrial environments. We supply this unit as 100% Brand New and Original, ensuring your system maintains factory-certified precision and long-term hardware stability.

Part Number Breakdown

The NFAI141-S50 suffix codes define its specific hardware capabilities and environmental hardening:

Technical Specifications

The NFAI141-S50 delivers high-resolution signal conversion with rapid response times.

• Input Channels: 16 independent channels.

• Signal Compatibility: 4 to 20 mA DC, 1 to 5 V DC, and -10 to 10 V DC.

• Accuracy: ±0.1% of full scale.

• Resolution: 12 bits.

• Data Refresh Cycle: 10 ms.

• Input Step Response: 10 ms.

• Power Consumption: 2.5 W.

• Operating Temperature: -20 to 60°C (-4 to 140°F).

• Dimensions: 107.5 x 32.8 x 130 mm.

• Weight: 350 g (12.35 oz).

• Condition: Guaranteed 100% Brand New and Original.

Engineering Advantages

The NFAI141-S50 addresses critical field integration challenges through robust hardware engineering:

• High-Speed Control Loop Support: A 10 ms data refresh cycle and matching 10 ms step response ensure the DCS receives process updates with virtually zero latency. This speed supports high-dynamic control loops in turbine management and fast-acting pressure regulation.

• Wide Signal Versatility: Unlike standard modules restricted to 4-20mA, the S50 variant accepts ±10 V signals. This eliminates the need for external signal conditioners when interfacing with specialized analytical equipment or legacy voltage-based sensors.

• Harsh Environment Resilience: The module operates across an extended temperature range (-20 to 60°C) and withstands vibrations up to 0.5 g. These specifications permit installation in non-climate-controlled cabinets or near heavy machinery without risking signal drift or hardware failure.

• Backplane Integrity Protection: The 500 kΩ "power off" input impedance prevents the module from loading down field loops if the DCS loses power. Furthermore, the module manages 5 g shock pulses, ensuring continuity during seismic events or physical cabinet impacts.

FAQs

• Can the NFAI141-S50 replace a standard NFAI141-S00?

  Yes. The S50 variant offers the same core functionality but adds extended temperature support and enhanced environmental protection. It serves as a superior replacement in more demanding atmospheres.

• How does the module handle signal noise?

  The module incorporates differential inputs and a 12-bit resolution filter to reject common-mode noise. This ensures stable readings even when signal wires run parallel to high-voltage AC cables.

• Does this unit require manual calibration?

  Yokogawa delivers each unit factory-calibrated to ±0.1% accuracy. The CENTUM software manages zero and span adjustments digitally, eliminating the need for manual potentiometer tuning on the hardware.

• Is this a brand new original part?

  Absolutely. We supply only 100% Brand New hardware. Every NFAI141-S50 ships in its original Yokogawa factory box with matching serial numbers and intact manufacturer seals.