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- Yokogawa
- NFAI143
- Analog Input Module
- Japan
- 130 x 107.5 x 32.8 mm
- 0.3 kg
- Xiamen, China
- New & In Stock
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- 1 Year
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We have a 10-year logistics and express cooperation agreement, so our products can be shipped to any place in the world.
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Our products are imported in bulk from the place of origin. Because of the cooperative relationship, our products are all original and 100% new.
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We provide 7*24 hours service to our customers. We will be there whenever you need us.
Price advantage
All our products are priced very favorably because we have our own warehouse and supply.
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Product Overview
The Yokogawa NFAI143 is an Analog Input Module designed for Yokogawa industrial automation and distributed control systems. It is used to acquire analog current signals from field instruments such as pressure transmitters, temperature transmitters, flowmeters, and level transmitters, converting them into digital data for real-time monitoring and process control.
The module features 16 analog input channels, high-precision signal conversion, and electrical isolation, providing reliable performance in demanding industrial applications.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Yokogawa |
| Model | NFAI143 |
| Product Type | Analog Input Module |
| Number of Input Channels | 16 |
| Input Signal | 4–20 mA DC |
| Input Resistance | Approximately 250 Ω |
| Resolution | 16-bit |
| Accuracy | ±0.1% of Full Scale |
| Data Refresh Cycle | 10 ms |
| Channel Isolation | Channel-to-channel and channel-to-system isolation |
| Connector Type | MIL 40-pin Connector |
| Mounting Method | Yokogawa controller base unit |
| Dimensions | 130 × 107.5 × 32.8 mm |
| Weight | 0.3 kg |
Function and Working Principle
The NFAI143 receives analog current signals from field devices and converts them into digital values using an internal analog-to-digital (A/D) converter.
Each input channel operates independently to ensure stable signal acquisition while minimizing electrical interference. The processed digital data is then transmitted to the controller for monitoring, alarm management, trending, and automatic process control.
Operating Sequence
- A field instrument outputs a 4–20 mA analog signal.
- The NFAI143 receives the input signal.
- The internal A/D converter digitizes the signal.
- The controller processes the measurement data.
- The automation system performs monitoring and control functions.
Key Features
- 16 analog input channels
- Supports standard 4–20 mA current signals
- High-resolution 16-bit A/D conversion
- High measurement accuracy
- Channel-to-channel electrical isolation
- Excellent resistance to electrical noise
- Compact modular design
- Reliable long-term industrial operation
System Role
The NFAI143 serves as the analog signal acquisition interface between field instruments and the control system.
Typical System Architecture
Pressure / Temperature / Flow Transmitter → NFAI143 Analog Input Module → Controller → HMI / DCS → Process Control
Industrial Applications
The NFAI143 is suitable for:
- Distributed Control Systems (DCS)
- Process automation
- Oil and gas production
- Chemical processing plants
- Power generation facilities
- Water and wastewater treatment
- Pharmaceutical manufacturing
- Industrial monitoring systems
- Manufacturing automation
Installation Guidelines
- Install the module in a compatible Yokogawa controller rack.
- Verify the power supply before installation.
- Connect analog input signals according to the wiring configuration.
- Route signal cables separately from power cables to minimize interference.
- Ensure proper grounding for reliable operation.
- Verify channel configuration during system commissioning.
Compatible Components
The NFAI143 is compatible with:
- Yokogawa Controllers
- Pressure Transmitters
- Temperature Transmitters
- Flowmeters
- Level Transmitters
- Yokogawa I/O Base Units
- Industrial Process Control Systems
Alternative Models
| Model | Description |
|---|---|
| NFAI135 | Pulse Input Module |
| NFA1543-S50/A4S00 | Analog Input Module |
| AAI143 | Analog Input Module |
| AAI543 | Analog Output Module |
| ADV151 | Digital Input Module |
Advantages
- High-precision analog signal acquisition
- Reliable electrical isolation
- Stable long-term operation
- Excellent resistance to electromagnetic interference
- Compact modular construction
- Easy installation and maintenance
- Seamless integration with Yokogawa automation systems
Frequently Asked Questions
What is the NFAI143 used for?
It is used to acquire 4–20 mA analog signals from field instruments and convert them into digital data for industrial control systems.
How many input channels does it provide?
The module provides 16 analog input channels.
What input signal does it support?
It supports the industry-standard 4–20 mA DC analog current input.
What devices can be connected?
It can be connected to pressure transmitters, temperature transmitters, flowmeters, level transmitters, and other analog-output field instruments.
Where is it commonly used?
It is widely used in industrial automation, process control, oil and gas, power generation, chemical processing, water treatment, and manufacturing systems.
Conclusion
The Yokogawa NFAI143 Analog Input Module is a high-performance 16-channel analog input module engineered for accurate acquisition of 4–20 mA process signals. With high-resolution signal conversion, channel isolation, and dependable industrial performance, it is an ideal solution for reliable analog data acquisition in modern process automation systems.