Product Description
The Triconex 3351 (AI3351 S2) is a high-density analog input module engineered for seamless integration within the Tricon Triple Modular Redundancy (TMR) controller architecture. Designed to interface with standard industrial transmitters, the module converts 4–20 mA analog signals into high-integrity digital data for safety-critical logic execution.
Supporting 32 commoned input points, the AI3351 S2 delivers efficient cabinet utilization for large-scale process monitoring while maintaining the fault-tolerant performance required for SIL 3 safety systems. Each signal is processed through three independent paths to the main processors, ensuring that no single hardware failure can compromise measurement accuracy or system availability.
Key Features
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High-density design with 32 analog input points
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Supports standard 4–20 mA industrial transmitters
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Extended operating range for fault detection (under-range / over-range)
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16 Hz input bandwidth for stable and noise-resistant measurements
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Triple Modular Redundant (TMR) internal signal processing
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Optimized for safety-critical monitoring applications
Technical Specifications
| Parameter | Specification |
|---|---|
| Number of Input Points | 32 points, commoned |
| Nominal Signal Range | 4–20 mA DC |
| Absolute Operational Range | 2–22 mA DC |
| Filtering (3 dB Bandwidth) | 16 Hz |
| Input Source Impedance | 180 ohms |
| Module Mass | 1.5 kg |
| Redundancy Level | Triple Modular Redundant (TMR) internal paths |
Applications
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Pressure, temperature, and flow transmitter monitoring
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Emergency Shutdown Systems (ESD)
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Burner Management Systems (BMS)
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Fire and Gas (F&G) safety systems
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High-integrity process protection applications
| 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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