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Yokogawa PFCS‑H2822 Signal Isolation Barrier
Product Introduction: A high‑reliability, 2‑channel isolated signal barrier/switch amplifier designed for industrial process control and hazardous area applications. It provides galvanic isolation between field devices and control systems, ensuring safe and accurate signal transmission in harsh industrial environments.
Technical Specifications:
- Channels: 2‑channel isolated
- Power Supply: 24 V DC (bus‑powered)
Detailed content
- Input Type: Dry contact or NAMUR sensor inputs
- Output Type: 2 relay contact outputs
- Isolation Voltage: High‑level galvanic isolation (compliant with IEC safety standards)
- Line Fault Detection (LFD): Built‑in
- Operating Mode: Reversible operation mode
- Safety Rating: SIL 2 certified per IEC/EN 61508
- Hazardous Area Compliance: ATEX, IECEx, FM, and UL approvals for Zone 2/Div. 2 installations
- Dimensions: Compact, DIN‑rail mountable form factor
Functional Features:
- Complete galvanic isolation between input and output circuits
- Integrated line fault detection for early diagnostics
- Reversible input/output operation for flexible system integration
- SIL 2 safety integrity for critical process applications
- Wide operating temperature range for industrial environments
- Plug‑and‑play installation with standard termination boards
Application Scenarios:
- Oil and gas refineries and petrochemical plants
- Chemical processing facilities
- Power generation plants
- Pharmaceutical manufacturing (GMP environments)
- Industrial automation systems requiring hazardous area signal isolation
- Process control loops with NAMUR sensors or dry contact inputs
