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Yokogawa NFAI135-S51 S2 STARDOM-FCN Analog Input Module

Yokogawa NFAI135-S51 S2 STARDOM-FCN Analog Input Module

Only 5 item(s) left in stock
  • Manufacturer: Yokogawa

  • Product No.: NFAI135-S51 S2

  • Country of origin:Japan

  • Product Type: Analog Input Module

  • Barcode: 8537101190

  • Payment: T/T, Western Union

  • Weight: 300g

  • Dimensions: 3.2cm x 10.6cm x 13cm

  • Shipping port: Xiamen

  • Warranty: 12 months

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Description

The Yokogawa NFAI135-S51 S2 is an isolated channel analog input module engineered for the STARDOM FCN autonomous controller platform. It features 8 dedicated input channels configured to process 4 to 20 mA DC current signals from 2-wire and 4-wire transmitters. Channel-to-channel isolation delivers robust electrical protection and high signal integrity, effectively mitigating ground loops and field noise in complex industrial processing zones. Equipped with an ISA Standard G3 environmental option, the module is built to withstand corrosive atmosphere variables, making it optimal for long-term reliability in critical process automation frameworks.

Features

  • Channel-to-Channel Isolation: Employs rigorous electrical isolation between the inputs and the system, as well as between individual channels.

  • HART Communication Capability: Supports digital field communication overlaid onto standard 4 to 20 mA hardware loops.

  • ISA Standard G3 Option: Configured with professional environmental protection to counter atmospheric corrosion.

  • Integrated Overcurrent Protection: Protects sensitive internal circuits against unexpected electrical surges from field line paths.

Applications

  • Oil and gas exploration and refining facilities

  • Petrochemical and chemical process plants

  • Municipal water and wastewater management systems

  • Power generation system monitoring

  • Distributed industrial data acquisition networks

Ordering Information

Model Suffix Codes Description
NFAI135 Analog Input Module (4 to 20mA, 8-channel, Isolated channels)
-S Standard type
5 With no explosion protection
1 With ISA Standard G3 option

Technical Specifications

Parameter Specifications
Manufacturer Yokogawa
Model NFAI135
Number of Input Channels 8-channel input, isolated channels
Input Signal 4 to 20 mA
Allowable Input Current 25 mA
Overcurrent Protection Provided
Withstanding Voltage

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


Between channels: 500 V AC for 1 minute

Input Resistance (Power ON) 250 ohm
Input Resistance (Power OFF) 500 ohm or more
Accuracy +/-0.1% of full scale
Data Refresh Cycle 10 ms
Input Step Response Time 100 ms
Transmitter Power Supply 20.2 to 29.3 V
Temperature Drift Max. +/-0.01%/degC
Maximum Current Consumption 360 mA (5 V DC), 450 mA (24 V DC)
Weight 0.3 kg
External Connection Pressure clamp terminal, MIL connector cable
HART Communication Available

Installation Guidelines

  • Ensure a stable 24 V DC source is linked to the analog field power supply terminal of the power supply module.

  • Form physical terminations using the corresponding pressure clamp terminal block or a tailored MIL connector cable system.

  • Note that when using a MIL connector cable like the KMS40, the withstanding voltage limit between input and system drops to 500 V AC for 1 minute.

  • Avoid coupling Zener barriers to this hardware; specify an isolation barrier for intrinsically safe installation demands.

Product Documentation

Technical Datasheet (PDF) Complete specifications and technical drawings.

Technical Datasheet

Yokogawa NFAI135-S51 S2 STARDOM-FCN Analog Input Module

What does the S2 designation stand for on this module?

The S2 identifier represents Style 2, indicating the specific hardware revision version of the module manufactured by Yokogawa.

Does this module feature channel-to-channel isolation?

Yes, it provides complete channel-to-channel galvanic isolation as well as isolation between the field inputs and the system backend, rated at 500 V AC for 1 minute.

Can I connect a Zener barrier to the input channels?

No, connecting a Zener barrier directly to this module is not allowed. You must use an isolation barrier if implementing it within an intrinsically safe circuit.

What are the configuration constraints indicated by the NFAI135-S51 codes?

The code denotes a standard module type (-S), no explosion protection features (5), and the integration of the ISA Standard G3 conformal coating option (1) for hostile atmospheric environments.

Global Express Shipping

  • Standard Delivery: 4-6 Business Days via DHL, FedEx, and UPS.
  • Express Dispatch: Same-day dispatch for in-stock orders placed before 2:00 PM (GMT+8).
  • Worldwide Coverage: Serving over 150 countries, including rapid delivery to Saudi Arabia and UAE.

Returns & Warranty

  • 30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
  • 12-Month Warranty: Every industrial component is backed by our professional technical warranty.

Orders are processed and delivered Monday-Friday (excluding public holidays).


For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .

TECHNICAL SPECIFICATIONS

Country of origin
Japan

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