Product Description
The SAI143-S33 is a safety-certified analog input module designed for the Yokogawa ProSafe-RS Safety Instrumented System (SIS). It provides 16 fully isolated 4–20 mA channels, delivering high-integrity data for Emergency Shutdown (ESD) and Fire & Gas (F&G) safety applications. The "S33" variant is optimized for standard analog signaling without HART communication, while offering robust G3-rated corrosion protection and extended thermal tolerance for harsh industrial environments.
Key Features
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SIL 3 Certified: Ensures fail-safe operation in safety-critical loops with advanced internal diagnostics
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G3 Corrosion Protection: ISA Standard G3 conformal coating protects against harsh industrial gases
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Extended Temperature Range: Reliable operation from -20°C to +70°C
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Full Channel Isolation: Prevents ground loops and protects the SIS backplane from electrical surges
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Redundancy Compatible: Supports dual-redundant configurations to maintain continuous safety function
Technical Specifications
| Item | Specification |
|---|---|
| Model Number | SAI143-S33 |
| System Compatibility | ProSafe-RS Safety System |
| Operating Temperature | -20°C to +70°C |
| Dimensions | 5.1 cm (W) x 12.7 cm (H) x 12.7 cm (D) |
| Net Weight | 0.34 kg |
Industrial Applications
The SAI143-S33 is ideal for safety-critical monitoring in:
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Offshore oil and gas platforms
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Petrochemical and chemical plants
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Heavy industrial manufacturing
It monitors pressure, level, and temperature sensors in SIL-rated loops, ensuring reliable safety operation even in harsh, corrosive, or high-temperature environments.
Technical FAQ
Q: How does SAI143-S33 differ from SAI143-H33?
A: The S33 is standard analog and does not include HART digital communication. The H33 variant has a built-in HART modem to interface with smart transmitters for diagnostics and configuration.
Q: Can the module be used in a redundant configuration?
A: Yes, two SAI143-S33 modules can be paired for dual-redundant operation, maintaining the safety loop even if one module is offline for replacement or maintenance.
| 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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