SK SATO Wind Speed and Direction Sensor W639-ED1

SK SATO Wind Speed and Direction Sensor W639-ED1

High-precision sensor for meteorological and industrial wind monitoring applications

The SK SATO W639-ED1 is a highly accurate wind speed and direction sensor designed for integration with the SK SATO Digital Indicator with Alarm (WVAT6D0-3-00). With advanced components including a brushless potentiometer and a photoelectric pulse sensor, the W639-ED1 delivers reliable and precise measurement of both instantaneous and average wind conditions. It is certified by the Japan Meteorological Agency (JMA) and is suitable for demanding meteorological, industrial, and safety-critical applications.

Product Features

• Compatible with WVAT6D0-3-00 Indicator: Designed to work seamlessly with SK SATO’s digital indicator, which displays wind data in both digital and visual formats.

• Dual-Sensor Configuration: Measures both wind direction (using a brushless potentiometer) and wind speed (using an optical pulse sensor).

• High Accuracy: Ensures precise readings for both low and high wind conditions with minimal maintenance.

• Alarm Integration: Three alarm levels trigger relay output, buzzer, and hazard lamp when thresholds are exceeded.

• Output Capabilities: Provides voltage signal (0–1 VDC) for wind direction and pulse output for wind speed; optional analog and RS-422 outputs available.

• Durable Construction: Engineered with polycarbonate and reinforced polyester resins for long-term outdoor performance.

• Wide Operating Conditions: Can operate in temperatures from −20°C to +50°C and withstand wind speeds up to 108 m/s.

Applications

• Meteorological Monitoring: Ideal for weather stations requiring certified and reliable wind data.

• Safety and Alarm Systems: Used in industrial environments or public spaces where wind alarms are required for operations or evacuation.

• Environmental Research: Suitable for collecting wind data for field research and environmental impact studies.

• Aviation and Marine Facilities: Provides critical wind information for airstrips, ports, and offshore platforms.

• Construction and Crane Operations: Monitors wind conditions for safe handling of materials and equipment.

Specifications

• model name: W639-ED1

• catalog number: 7910-10

• compatible indicator: WVAT6D0-3-00 (Cat. No. 7910-50)

• wind direction measurement: Brushless potentiometer (0–360°)

• wind speed measurement: Optical pulse sensor (2 to 90 m/s)

• accuracy:

  • wind direction: ±5°

  • wind speed: ±0.5 m/s (<10 m/s), ±5% reading (>10 m/s)

• starting speed: 2 m/s

• survival speed: 108 m/s (tested in wind tunnel)

• output signals:

  • wind direction: 0–1 VDC

  • wind speed: Pulse (60 pulses per propeller rotation)

• power supply: 12±2 VDC (from indicator)

• operating temperature: −20 to 50°C

• max. cable distance: 300 m (CVVS 1.25 mm²)

• connector: NJW-207-PF10 (for cable diameter 8.6–10.5 mm)

• materials:

  • body and propeller: Polycarbonate resin

  • tail: Polyester resin with glass fiber

• dimensions:

  • size: 250 (W) x 660 (H) x 510 (D) mm

  • mounting: 3 holes, 12.4 mm diameter, spaced on 125 mm circle

• weight: 3 kg

The SK SATO W639-ED1 is a professional-grade wind sensor ideal for those requiring consistent and actionable wind data. With its reliable performance and certification, it serves as a trusted solution for critical monitoring environments.