Product Description
The Triconex 3721 is a high-precision 32-point analog input module designed for integration within the Tricon Triple Modular Redundancy (TMR) system. Engineered for mission-critical Safety Instrumented System (SIS) applications, the 3721 provides DC-coupled differential inputs with exceptional noise immunity and signal clarity, enabling reliable monitoring and control of critical industrial processes.
With programmable resolution and a fast 10 ms update rate, this module allows engineers to optimize data granularity and responsiveness. Its robust design ensures continuous operation in electrically noisy or high-stress industrial environments.
Key Features
-
32 differential, DC-coupled analog input channels
-
Supports unipolar (0–5 VDC) and bipolar (–5 to +5 VDC) voltage ranges
-
Programmable measurement resolution (12-bit or 14-bit)
-
High-speed 10 ms input update rate for real-time process monitoring
-
Superior common mode rejection of –85 dB (DC–100 Hz)
-
Rugged overrange protection: continuous 150 VDC / 115 VAC
-
Compatible with TMR safety architectures
Technical Specifications
| Parameter | Specification |
|---|---|
| Input Points | 32 channels, differential, DC-coupled |
| Voltage Ranges | 0–5 VDC or ±5 VDC (+6% margin) |
| Resolution | 12-bit or 14-bit (user-programmable) |
| System Accuracy | 0 °C to 60 °C |
| Data Refresh Rate | 10 ms for all points |
| Common Mode Rejection | –85 dB (DC–100 Hz) |
| Module Weight | 1.36 kg |
| Architecture | Triple Modular Redundant (TMR) compatible |
Applications
-
Safety Instrumented Systems (SIS) monitoring and control
-
Emergency Shutdown (ESD), Burner Management Systems (BMS), and Fire & Gas (F&G) systems
-
High-precision voltage signal acquisition in petrochemical, power generation, and heavy industrial facilities
-
High-speed industrial automation requiring TMR fault tolerance
| 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. |
Recently Viewed
Express Shipping
Extensive Inventory
Quality Assurance
