Technical Overview
The NFAI143-H50 is a high-performance, fully isolated analog input module for the Yokogawa CENTUM VP DCS. Designed for electrically noisy environments or systems with varying ground potentials, this module provides 16 fully isolated 4–20 mA channels. Integrated HART communication allows operators to monitor smart field devices and access secondary diagnostics without disrupting process signals.
Detailed Specifications
| Item | Specification |
|---|---|
| Module Type | Isolated Analog Input Module with HART |
| Model Number | NFAI143-H50 |
| Channel Density | 16 channels, fully isolated |
| Signal Range | 4 to 20 mA DC |
| HART Support | HART 5/6/7 |
| Measurement Accuracy | ±0.1% of full scale |
| Isolation Strength | 1500 V AC for 1 min (Input-to-System) |
| Data Refresh Rate | 10 ms (Step response 100 ms) |
| Transmitter Power Supply | 24–25.5 V DC (Current-limited at 25 mA) |
| Thermal Stability | Drift max ±0.01% per °C |
| Operating Temperature | 0°C to +60°C |
| Weight | 0.3 kg |
Operational Capabilities
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Channel-to-channel isolation prevents ground loops and ensures signal integrity in high-noise environments.
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High-impedance Power OFF feature maintains accurate readings in redundant loop configurations.
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Integrated transmitter power supply simplifies 2-wire field wiring.
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Overcurrent protection on each channel for field-side safety.
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Hot-swappable in redundant FIO nodes for zero-downtime maintenance.
Technical FAQ
When should I use the NFAI143 instead of the NFAI141?
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Choose NFAI143 when channel-to-channel isolation is required, or field instruments are grounded at different potentials.
Does this module support 4-wire transmitters?
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Yes. It can accept externally powered 4-wire devices through proper terminal block configuration.
Can I hot-swap this module?
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Yes. In a redundant node setup, the NFAI143-H50 can be replaced while the system is live without disrupting process control.
| 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 |
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| 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. |
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| 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. |
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