03001-LC

Specifications and Technical Data

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Reliable, Accurate Wind Measurements
Special cable connectors

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Technical Description

This version of the 03001 Wind Sentry Set has a connector rather than the standard pigtails. The connector attaches to the CS110 Electric Field Meter or the retired MetData1 Weather Station.

The 03001-LC consists of a 3-cup anemometer and a wind vane mounted on a small crossarm. The cup anemometer measures wind speed. Rotation of its cup wheel produces an ac sine wave that is directly proportional to wind speed. The frequency of the ac signal is measured by a datalogger pulse count channel, then converted to engineering units (mph, m/s, knots). The Campbell Scientific version uses shielded bearings which lowers the anemometer’s threshold.

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

03001-LC Specifications

Wind Speed (Anemometer)

Range: 0 to 50 m s^-1 (112 mph), gust survival 60 m s^-1 (134 mph)
Sensor: 12 cm diameter cup wheel assembly, 40 mm diameter hemispherical cups
Accuracy: ±0.5 m s^-1 (1.1 mph)
Turning Factor: 75 cm (2.5 ft)
Distance Constant (63% recovery): 2.3 m (7.5 ft)
Threshold: 0.5 m s^-1 (1.1 mph)
Transducer: Stationary coil, 1350 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^-1 per Hz

Wind Direction (Vane)

Range: 360° mechanical, 355° electrical (5° open)
Sensor: Balanced vane, 16 cm turning radius
Accuracy: ±5°
Damping Ratio: 0.2
Delay Distance (50% recovery): 0.5 m (1.6 ft)
Threshold 0.8 m s^-1 (1.8 mph) at 10° displacement; 1.8 m s^-1 (4 mph) at 5° displacement
Transducer: Precision conductive plastic potentiometer; 10 kohm resistance; 0.5% linearity; life expectancy 20 million revolutions. Rated 1 W at 40°C, 0 W at 125°C.
Transducer Output: Analog dc voltage proportional to wind direction angle with regulated excitation voltage supplied by the datalogger

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Ships With

(1) 6332 Mounting pipe

(2) Allen wrench from original mfg

Shipping Weights & Dims

Single Box Shipping Weight:
     3 lb plus 0.3 lb per
        10' of cable
     1.4 kg plus 0.14 kg per
        3.05 m of cable

Single Box Shipping Dimensions:
     24" x 18" 10"
     1.0 x 45.7 x 25.4 cm