Multi-sensor weather station 3S-CWS

monitoringcompactfor solar power plants

Product overview
The Compact Weather Station 3S-CWS is an all-in-one professional sensor unit that combines multiple meteorological measurements in a single weatherproof enclosure. The device outputs a complete dataset via Modbus RTU over RS485, enabling direct integration with SCADA, dataloggers and monitoring systems. It is intended for solar PV monitoring, agriculture, smart city networks and environmental research where consolidated, reliable weather data are required.

How it works
The 3S-CWS integrates interchangeable external sensors into a sealed, UV-resistant housing for quick, error-free installation. Connections follow a plug & play principle:

• The connection box uses waterproof, UV-resistant connectors.
• Each sensor has a unique pin configuration to prevent incorrect wiring.

Measured signals are processed by the internal electronics and transmitted via RS485 using Modbus RTU at selectable baud rates.

Why choose the SEVEN Compact Weather Station

• All-in-one design – multiple weather parameters consolidated in one device
• Standards compliant – designed in accordance with IEC 61724-1:2021 for solar monitoring
• Durable enclosure – UV-protected, outdoor-rated housing (IP54 standard, IP67 optional)
• Fast installation – supplied with mounting system, brackets and cable for quick setup
• Easy integration – native compatibility with Modbus RTU systems

Applications

• Solar PV plants – site-level irradiance and ambient measurements for PR and yield analysis
• Agriculture – microclimate data for irrigation planning and crop management
• Smart cities & networks – distributed environmental monitoring and urban weather data
• Research & academia – reliable datasets for meteorological and climate studies

FAQ

• What external sensors can be connected? Thermopile pyranometer, irradiance sensors (G and POA), module temperature sensor, ambient temperature sensor, wind speed and direction sensors, relative humidity sensor, barometric pressure sensor, rain gauge. Sensors can be added or removed per project requirements.
• Is it compatible with SCADA or dataloggers? Yes, when the host supports RS485/Modbus RTU.
• How do I set up the sensor? Follow the supplied user manual and video guides for step-by-step instructions.
• Is the mounting structure included? Yes. The unit is delivered with a coated steel mounting system and sensor brackets.
• Does the sensor include a cable? Supplied with a 3 m LIYYC11Y PUR cable (UV- and weather-resistant), 6-core twisted including ground. Other lengths available on request.
• How is it powered? Supply voltage: 12–30 V DC (24 V recommended).
• What is the price of 3S-CWS? Price depends on configured sensors; indicative price around 1800 EUR.
• What is the warranty? 2-year manufacturer warranty.
• What are delivery times? Small orders: approx. 1–2 weeks. Bulk orders (100+ units): approx. 6–8 weeks.

Technical specifications

• Item code: 3S-CWS
• Measured data: Global & plane-of-array irradiance; module temperature; ambient temperature; wind speed; wind direction; relative humidity; air pressure; precipitation
• Standards: Compliant with IEC 61724-1:2021
• Digital outputs: RS485 up to 38400 Baud
• Communication protocol: Modbus RTU (optional Modbus TCP/IP)
• Output rate: 1/s
• Operating temperature range: -40°C to +85°C
• Operating humidity range: 0 to 100 % RH
• Mounting structure material: Coated steel
• Dimensions: 635 x 1123 x 1048 mm (W x L x H); height adjustable on request
• Weight: 5.8 kg
• IP rating: IP54 (optional IP67)
• Power supply: 12 to 30 V DC
• Power consumption: 25 mA @ 24 V DC
• Electrical connection: 3 m LIYYC11Y PUR cable, UV and weather resistant
• Connection box material: ABS
• Galvanic isolation: 1000 V between power supply and RS485 bus