Multifunction power metering S111

Description The S111 three-phase multi-functional smart meter delivers accurate real-time measurement of voltage and current on all three phases for industrial power and energy monitoring. Its direct measurement approach provides reliable data for energy management, load analysis and efficiency improvement.

Seamless Integration The S111 supports Modbus/RTU (RS-485) for compatibility with energy management systems, PLCs and SCADA platforms, enabling remote readout, logging and integration into existing control architectures.

Compact and Durable Design Designed for DIN-rail mounting, the S111 uses integrated Rogowski coil current sensors with RJ12 connectors for simplified installation and high-accuracy measurement across a wide current range. The enclosure is rated IP20 for indoor industrial environments.

Portable Version A portable measurement solution can be implemented using the S110-P Portable Power Meter combined with the S551 Portable Data Logger and the S430 Pitot-Tube Flow Meter for on-site compressor testing and mobile verification tasks.

Applications

• Compressor monitoring and efficiency assessment
• Industrial power management and energy auditing
• HVAC systems and building automation power monitoring
• Renewable energy production monitoring (solar, wind)
• Manufacturing process control and preventive maintenance

Technical Data (summary table) Signal / Interface & Supply
Power supply: 18 – 36 VDC, 3.5 VA
Phase voltage: L1, L2, L3, N, max 720 VAC
Current sensor: 3 x Rogowski coils, integrated type, RJ12
Interface: Modbus/RTU RS-485

General data (summary table) Protection class: IP20
Dimensions: 95 x 73 x 66 mm
Display: 1.77" color (TFT screen display)
Weight: 0.260 kg
Operating temperature: -25°C ... +60°C

Characteristics / technical specifications

• Three-phase and single-phase power measurement
• Wide voltage range up to 720 VAC
• High-accuracy measurement with Rogowski coil current sensors (e.g. 100 A, 1000 A, 3000 A)
• Compact DIN-rail design (95 x 73 x 66 mm)
• Plug-and-play RJ12 connectors for current sensors
• Modbus/RTU (RS-485) communication
• Real-time measurement for precise energy monitoring
• Power supply: 18–36 VDC, 3.5 VA
• Protection class: IP20
• Operating temperature range: -25°C to +60°C