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Overview

The 30206, manaufactured by R. M. Young Company, measures wind speed and direction with a 3-cup anemometer and a wind vane mounted on a small crossarm. This version of the 03002-L Wind Sentry Set has a 13 ft cable that terminates in a prewired connector, which attaches to the Solar800 enclosure.

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Benefits and Features

  • Designed for continuous, long-term, unattended operation in adverse conditions
  • Small size, simplicity, and rugged construction for a quality instrument at a modest price

Detailed Description

The 30206 uses a cup wheel assembly to measure wind speed. Rotation of the cup wheel produces an ac sine wave that is directly proportional to wind speed. The frequency of the ac signal is measured by a data logger pulse count channel, then converted to engineering units (mph, m/s, knots). Campbell Scientific’s version uses shielded bearings, which lowers the anemometer’s threshold.

Wind direction is sensed by a potentiometer. With the precision excitation voltage from the data logger applied to the potentiometer element, the output signal is an analog voltage that is directly proportional to the azimuth angle of the wind direction.

Specifications

Operating Temperature -50° to +50°C (assuming non-riming conditions)
Mounting Diameter
  • Mounts on standard 1-in. IPS pipe.
  • 34 mm (1.34 in.)
Overall Height 32 cm (12.6 in.)
Crossarm Length 40 cm (15.7 in.) between instruments (center-to-center)

Wind Speed (Anemometer)
Range 0 to 50 m/s (112 mph)
Gust Survival 60 m/s (134 mph)
Sensor
  • 12-cm (4.72-in.) diameter cup wheel assembly
  • 40-mm (1.58-in.) diameter hemispherical cups
Accuracy ±0.5 m/s (1.1 mph)
Turning Factor 75 cm (2.5 ft )
Distance Constant 2.3 m (7.5 ft) 63% recovery
Threshold 0.5 m/s (1.1 mph)
Transducer
  • Stationary coil
  • 1300 ohm nominal resistance
Transducer Output
  • AC sine-wave signal induced by rotating magnet on cup wheel shaft
  • 100 mV peak-to-peak (at 60 rpm)
  • 6 V peak-to-peak (at 3600 rpm)
Output Frequency
  • 1 cycle per cup wheel revolution
  • 0.75 m/s per Hz
Cup Wheel Diameter 12 cm (4.7 in.)
Weight 113 g (4 oz)

Wind Direction (Vane)
Mechanical Range 360°
Electrical Range 352° (8° open)
Sensor
  • Balanced vane
  • 16-cm (6.3 in.) turning radius
Accuracy ±5°
Damping Ratio 0.2
Delay Distance 0.5 m (1.6 ft) 50% recovery
Threshold
  • 0.8 m s-1 (1.8 mph) with 10° displacement
  • 1.8 m/s (4 mph) with 5° displacement
Transducer
  • Precision conductive plastic potentiometer
  • 10 kohm resistance
  • 1.0% linearity
  • Life expectancy of 50 million revolutions
  • Rated 1 W at 40°C, 0 W at 125°C.
Transducer Excitation Requires regulated dc voltage. (15 Vdc maximum)
Transducer Output Analog dc voltage proportional to wind direction angle (with regulated excitation voltage supplied by the data logger)
Vane Length 22 cm (8.7 in.)
Weight 170 g (6 oz)

Compatibility

The 30206 is a component of the Solar800 station.

Listed Under

Replacement Part for the following products:

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