Product Description
The NFAI143-H50/A4S00 is a high-density analog input module designed for the Yokogawa CENTUM VP Distributed Control System. It provides 16 fully isolated input channels, ensuring superior noise immunity and signal integrity in demanding industrial environments.
Designed for flexibility, the module supports both 2-wire (loop-powered) and 4-wire (externally powered) transmitters, making it suitable for standard 4–20 mA process instrumentation across multiple sectors.
A key feature of the NFAI143-H50/A4S00 is its integrated HART pass-through capability. This enables transparent access to secondary variables and device diagnostics from smart field instruments without interrupting the primary analog signal. To enhance system reliability, each channel incorporates dedicated overcurrent protection, preventing field wiring faults from affecting the overall control system.
Technical Specifications
| Parameter | Specification |
|---|---|
| Number of Channels | 16 (channel-to-channel and channel-to-system isolation) |
| Input Signal Range | 4–20 mA DC |
| Transmitter Compatibility | 2-wire (loop-powered) and 4-wire devices |
| HART Support | HART pass-through for FDT/DTM integration |
| Accuracy | ±0.1% of full scale (standard conditions) |
| Input Impedance | 250 Ω (internal precision resistor) |
| Update Cycle | 10 ms per module |
| Current Consumption (5 V) | 230 mA DC |
| Current Consumption (24 V) | 540 mA DC |
| Weight | 0.3 kg |
Application
The NFAI143-H50/A4S00 is widely deployed in:
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Oil & gas refineries
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Chemical processing plants
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Gas treatment and compression facilities
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Large-scale utility and energy systems
It is particularly suited for high-density installations requiring monitoring of multiple pressure, temperature, and flow transmitters while minimizing cabinet footprint.
Technical FAQ
Can the NFAI143-H50/A4S00 supply power to a 2-wire transmitter?
Yes. The module provides an internal 24 V DC supply for loop-powered 2-wire transmitters, eliminating the need for external power distribution modules.
How does the “/A4S00” suffix affect the module?
The /A4S00 suffix defines the hardware revision and connector/interface type (typically pressure-clamp or KS cable configuration), ensuring compatibility with specific baseplate and terminal board arrangements.
| Quick Quotes | Receive price & availability FAST from our dedicated customer service team. |
|---|---|
| Delivery | Expedited, Freight, And International Shipping Available. |
| Condition | 100% New with Original Package |
| Payment | We accept American Express, Discover, MasterCard, PayPal, and Visa. Our site is secured by RapidSSL. |
| Shipping Port | ShangHai, Xiamen |
| Warranty | 12 Months |
| Q: Is Our Pricing Competitive? |
| A: Yes, we collaborate with over 50 countries worldwide. As a top supplier in China, we offer significant discounts based on market trends. |
| Q: What Is the Warranty Period? |
| A: All our new and original products come with a standard one-year warranty. |
| Q: What Payment Methods Do We Accept? |
| A: We require 100% T/T (Telegraphic Transfer) payment before shipping. For items with a lead time, a 30% deposit is needed upfront, and the remaining 70% is due before shipping. If you have a representative in China, you can arrange an RMB transfer through them. |
| Q: What Shipping Methods Do We Use? |
| A: We primarily use FedEx, DHL, UPS, and BRE for shipping. If you have an account with any of these carriers, you can handle shipping directly. We also offer free shipping to China-based freight forwarders. |
| Q: What Is Our Delivery Time? |
| A: Delivery usually takes 1-3 days after receiving the initial payment. For items with a lead time, shipping will occur according to the specified schedule. |
| Q: How Do We Package the Goods? |
| A: We ensure safe packaging with multiple layers of protection. Products are first placed in their original boxes and sealed with labels. A layer of bubble wrap is then added for collision protection during transit. Finally, the items are packed securely in durable boxes. |
| Q: How Can Customers Contact Us and Request a Quote? |
| A: You can reach out to us via email, WhatsApp, WeChat, Skype, or your preferred communication platform. Contact us with your needs, and we'll provide a prompt, customized quote. |
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