Description
Technical Specifications
- Product Model: SUPCON SB3073-Ex
- Brand: SUPCON
- Warranty: One Year
- Input Voltage: 24 VDC (±10%)
- Operating Temperature: -20°C to +60°C
- Storage Temperature: -40°C to +85°C
- Response Time: ≤10 ms signal conversion
- Protection Class: IP20 (control cabinet installation)
- Explosion Protection: Ex ia IIC intrinsically safe certification
- Accuracy Class: Up to ±0.05% full scale
- Output Frequency: Real-time analog signal processing for industrial control systems
- Rated Current Range: Standard 4–20 mA output loop
- Communication Interface: Analog output / optional HART compatibility
- Supported Protocols: Compatible with DCS and PLC analog interfaces
- Overload Capacity: Internal energy-limiting circuits for intrinsic safety protection
- Dimensions: Approx. 114.5 mm × 99 mm × 17.5 mm
- Mounting Type: DIN rail installation
- Isolation Capability: Three-port isolation between power supply, input, and output circuits
Product Overview
The SUPCON SB3073-Ex is an intrinsically safe isolated barrier designed for signal transmission and protection in hazardous industrial environments. Developed by SUPCON for process automation systems, this module acts as a protective interface between field instruments located in explosive zones and control equipment located in safe areas.
In industrial plants such as refineries, chemical facilities, and power stations, field sensors installed in hazardous areas measure parameters like temperature or pressure. The SB3073-Ex safely converts these signals and transmits them to control systems such as PLCs or DCS platforms while limiting voltage and current levels to prevent ignition risks.
The module supports multiple temperature measurement inputs, including thermocouples and resistance temperature detectors (RTDs), converting low-level sensor signals into standardized outputs such as 4–20 mA or 1–5 V signals used by automation systems. Its intrinsic safety design ensures that even under fault conditions, energy transmitted to hazardous zones remains below ignition thresholds.
With high-precision signal conversion, strong electromagnetic interference immunity, and DIN-rail installation, this SUPCON module is widely deployed in process industries requiring both accurate measurement and strict explosion-proof protection.
Key Functions
Intrinsically Safe Signal Isolation
The module isolates signals between hazardous and safe areas using energy-limiting circuits that restrict voltage and current levels. This intrinsic safety mechanism prevents dangerous energy from reaching explosive atmospheres and protects both equipment and personnel.
Temperature Signal Conversion
The module converts sensor inputs such as RTD (Pt100, Cu50) or thermocouple signals (J, K, T, etc.) into standardized analog outputs. This enables direct integration with industrial controllers for process monitoring and regulation.
High-Precision Process Monitoring
With conversion accuracy up to ±0.05% and strong noise rejection capability, the barrier ensures reliable signal transmission even in environments with high electromagnetic interference.
Advanced Diagnostics and Fault Detection
The device can detect wiring faults such as open-circuit conditions in temperature sensors and generate alarm outputs. These diagnostics help maintenance engineers quickly identify sensor or wiring issues before they affect process control.
Application Scenarios
Petrochemical and Refinery Plants
In refining processes where flammable gases are present, the barrier isolates temperature transmitters installed in hazardous zones from the central DCS system. This prevents energy feedback that could trigger ignition while ensuring accurate process monitoring.
Power Generation Facilities
Power plants use the module to transmit boiler or turbine temperature measurements from hazardous field areas to the control system. Its strong anti-interference capability ensures stable data acquisition even in high-voltage electrical environments.
Chemical Manufacturing
Chemical reactors require precise temperature control for safe production. The barrier converts sensor signals into standardized analog outputs for the plant control system while maintaining explosion-proof protection.
Oil & Gas Pipeline Monitoring
In natural gas pipeline stations, the module isolates and transmits temperature and pressure sensor signals from hazardous zones to supervisory control systems, ensuring safe and reliable operation.
