Product Description
The AAI841-S50 is a high-density analog input module designed for the Yokogawa CENTUM VP control system. This variant is specifically engineered for harsh industrial environments, as indicated by the S50 suffix, which denotes a G3 conformal coating. This protective coating safeguards internal circuitry against corrosive gases, moisture, and airborne contaminants, making the module well-suited for wastewater treatment plants, chemical processing facilities, and coastal or offshore installations.
The module supports 16 analog input channels, typically connected to 4–20 mA field transmitters. It provides galvanic isolation between field wiring and the system bus, minimizing the risk of ground loops and protecting the Field Control Station (FCS) from electrical disturbances. With a fast update cycle, the AAI841-S50 ensures timely delivery of process data for accurate PID control and safety monitoring.
Technical Specifications
| Parameter | Specification |
|---|---|
| Number of Input Channels | 16 points |
| Channel Isolation | Isolated from system logic |
| Input Signal Type | 4–20 mA DC |
| Input Impedance | 250 Ω |
| Measurement Accuracy | ±0.1% of full scale |
| System Isolation Voltage | 1500 V AC (1 minute) |
| Update Cycle | 40 ms |
| Environmental Protection | G3 conformal coating (S50) |
| Power Requirements | 320 mA at 5 V DC |
| Installation Type | FIO (Field Interface Unit) |
| Weight | 0.35 kg |
| Compatible Systems | CENTUM VP, CS 3000 R3 |
Functional Comparison: S50 vs. S00 Variants
The key difference between the AAI841-S50 and the standard S00 variant lies in environmental protection:
-
S00: Intended for clean, climate-controlled control rooms
-
S50: Qualified for ISA-S71.04 Class G3 environments, including exposure to corrosive gases such as Hydrogen Sulfide (H₂S), Chlorine (Cl₂), and Sulfur Dioxide (SO₂)
This makes the S50 version the preferred option for aggressive or contaminated industrial atmospheres.
Frequently Asked Questions
Q: Does the AAI841-S50 support redundant operation?
A: Yes. When installed on a redundancy-capable baseplate, the module can be deployed in pairs to support high-availability (up to 99.9999%) system configurations.
Q: Is the AAI841-S50 compatible with older CENTUM CS 3000 systems?
A: Yes. The AAI841 series is compatible with CENTUM VP and CENTUM CS 3000 R3, provided the correct FIO nodes and baseplates are used.
| 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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