RS485 wind direction sensor 3S-WD-MB-A

Modbus RTUIP54IP65

Product overview
The Wind Direction Sensor 3S-WD-MB-A is a professional meteorological instrument for measuring horizontal wind direction in degrees. The sensor comprises a body and a vane and is designed for integration with monitoring systems in industrial and environmental applications, including photovoltaic plants. It is supplied with mounting options and cable.

Operation and design
A vane-driven Hall Effect position sensor detects changes in wind direction and converts them into an electrical signal. The anodized aluminium housing provides resistance to outdoor conditions and seawater. Measured values are transmitted over an RS485 interface using the Modbus RTU protocol for compatibility with dataloggers, SCADA and monitoring devices.

Installation
Verify installation at ground level before final mounting. The sensor follows a Plug & Run concept to simplify setup and reduce installation errors. Two mounting options are available:

• Pipe mounting
• Ground mounting

Benefits

• High measurement accuracy and low variation for reliable wind direction data
• Durable anodized aluminium housing for outdoor use
• Low maintenance design suitable for long-term monitoring
• Designed for integration with SCADA, dataloggers and inverters
• Available cable and mounting options for flexible installation

FAQ (selected)

• Standards compliance: The 3S-WD-MB-A is compliant with IEC 61724-1:2021 for PV monitoring applications
• Setup: Follow the user manual with step-by-step instructions
• Cable: Supplied cable options include 50 cm 2x2x0,22 mm² (LI2YC11Y-TP) and 2.5 m 3x2x0,22 mm² (LI2Y(st) C11Y), UV and weather resistant
• Mounting: Pipe mounting or ground mounting
• Warranty: 2-year warranty covering defects in materials or workmanship
• Delivery times: Small orders (up to 5 pcs): approx. 2–3 weeks; Bulk orders (up to 100 pcs): approx. 7–9 weeks
• Price range: Listed between 265 and 480 EUR

Technical specifications

• Item Code: 3S-WD-MB-A
• Sensor Type: Vane-driven Hall Effect position sensor
• Measuring Range: 0–359°
• Accuracy: ±1% of measuring value
• Resolution: 0.1°
• Start Speed: 1 m/s
• Data Output: RS485
• Communication Protocol: Modbus RTU
• Power Supply: 12–30 V DC
• Power Consumption: Typically 20 mA at 24 V DC
• Cable Options: 50 cm 2x2x0,22 mm² (LI2YC11Y-TP) / 2.5 m 3x2x0,22 mm² (LI2Y(st) C11Y), UV and weather resistant
• Operating Temperature Range: -40°C to +85°C (ice free)
• Dimensions: Ø 305 mm x 185 mm
• Box Dimensions: 80 mm x 82 mm x 55 mm (W x L x H)
• Weight: 0.59 kg
• IP Rating: IP54 (IP65 optional)
• Housing Material: Aluminium
• Vane Material: Aluminium
• Mounting Method: Pipe or ground mounting
• Standard: Compliant to IEC 61724-1:2021