Description

C20‑SI222 Safety Isolator Barrier

Technical Specifications

• Product Model: C20‑SI222
• Warranty: One Year
• Function: 2‑channel galvanic isolated intrinsic‑safe signal barrier for hazardous‑area application
• Input: 4‑20 mA analog signal from Ex‑I field transmitters
• Output: Isolated 4‑20 mA signal to safe‑side control‑system
• Safety Approval: ATEX / IECEx intrinsic‑safe certification, SIL2 capability
• Power Supply: 20‑30 VDC auxiliary power supply
• Galvanic Isolation: 2500 VAC isolation between hazardous‑side and safe‑side circuit
• Mounting: 35 mm DIN‑rail cabinet mounting
• Operating Temperature: ‑20 °C ~ +60 °C
• Storage Temperature: ‑40 °C ~ +85 °C
• Protection Class: IP20
• System Compatibility: Oil‑gas, chemical‑plant hazardous‑area instrument signal isolation
• Diagnostics: Power‑on status LED, field‑loop fault indication
• Humidity: 5‑95 % RH non‑condensing
• Weight: 0.22 kg
• Dimensions: 12.5 mm width compact DIN‑rail barrier footprint
• 

Product Overview

C20‑SI222 is dual‑channel intrinsic‑safe galvanic isolator barrier. It provides electrical isolation and energy‑limiting protection for analog signals crossing hazardous‑safe zone boundary, protects DCS/PLC equipment from hazardous‑area energy‑risk. Widely applied for Ex‑zone instrument signal conditioning. Surplus and refurbished tested spare isolating barrier for safety‑instrumented‑system maintenance projects.

Application Notes

‑ Match barrier safety parameters with field‑transmitter intrinsic‑safe parameters. ‑ Use shielded twisted‑pair cable for field‑signal wiring. ‑ Typical deployment: Intrinsic‑safe dual‑channel signal‑isolator barrier spare‑part stocking.