Pepperl+Fuchs HiC2025 SMART Transmitter Power Supply 1ch isolated barrier 24VDC

Product Positioning
The HiC2025 is a classic model in the Hi series isolation barrier from Pepperl+Fuchs, Germany. It is designed to provide intrinsically safe power and signal isolation for two-wire smart transmitters (supporting HART/BRAIN protocols) in hazardous locations such as Zone 0, Zone 1, and Zone 2. It converts 24 V DC loop power into a safe 4-20 mA signal and provides 2.5 kV three-way isolation (input, output, and power) between the hazardous and safe areas of the field, ensuring reliable system operation and the safety of personnel and equipment.

Core Features
• Intelligent Communication: Bidirectional digital signals are transmitted without loss. HART, BRAIN handheld communicators, or AMS device management systems can communicate directly with field transmitters from the control room, enabling remote configuration, diagnostics, and asset optimization.
• High-Precision Conversion: Typical transmission error ≤ 0.1% and temperature drift ≤ 50 ppm/K meet the needs of high-precision process control. • Fail-Safe: Built-in short-circuit, reverse polarity, overload, and line-break protection; SIL 2/SC 3 functional safety certification, compliant with IEC 61508/IEC 61511 safety instrumented systems.
• Flexible Output: Supports both source and sink wiring modes, compatible with various DCS/PLC card requirements.
• Field-Friendly: Ultra-thin 12.5 mm housing, DIN rail mounting, pluggable terminals, maintenance without powering off; front panel labeling for easy circuit identification.

Technical Specifications
Power Side (Safe Area)
• Supply Voltage: 20 … 35 V DC
• Power Consumption: ≤ 0.8 W

Field Side (Hazardous Area)
• Output Voltage: ≥ 16 V (@ 20 mA)
• Output Current: 4 … 20 mA (Overload 25 mA)
• Open Circuit Voltage: ≤ 28 V
Signal Characteristics
• Load Capacity: 0 … 550 Ω
• Response Time: ≤ 1 ms
• Insulation Voltage: 2.5 kV AC, 1 min

Environmental Conditions
• Operating Temperature: -20 … +60 °C (-4 … +140 °F)
• Storage Temperature: -40 … +80 °C
• Relative Humidity: 5 … 95 % RH (non-condensing)
• Protection Degree: IP20 (terminal side) in accordance with IEC 60529
• EMC: in accordance with EN 61326-1 (Industrial Locations)

Certifications and Compliance
• ATEX / IECEx: Ex ia IIC T4 Ga, Ex ia IIIC T135°C Da, Ex ia I Ma
• UL / FM / CSA: Class I, Division 1, Groups A-D; Class II, Division 1, Groups E-G; Class III
• NEPSI / CCCF: China Explosion-Proof Conformity

Mechanical Data
• Dimensions: 12.5 × 106 × 128 mm (W × H × D)
• Weight: Approximately 100 g
• Mounting: 35 mm DIN rail (EN 60715)
• Terminals: Plug-in, 0.2 … 2.5 mm² solid or stranded wire

Typical Applications
• Petrochemical: Power supply and signal isolation for temperature, pressure, differential pressure, and level transmitters in refining, olefins, and aromatics plants. • Offshore platforms: Sulfur gas detection and wellhead pressure monitoring on FPSOs and drilling platforms.
• Fine chemicals: Explosion-proof circuits for reactor pH and flow rate smart transmitters.
• Pharmaceuticals & Food: Hygienic pressure transmitters for clean areas, isolating them from BMS/EMS systems.
• Utilities: Safety instrumented systems (SIS) for gas pressure regulating stations, LNG storage tanks, and hydrogen refueling stations.

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