R.M. Young Wind Sentry
6
•
Campbell Scientific version uses shielded bearings, which lowers the
anemometer’s starting threshold
•
Compatible with Campbell Scientific CRBasic dataloggers:
CR200(X) series, CR300 series, CR6 series, CR800 series, CR1000,
CR1000X series, CR3000, CR5000, and CR9000X
6.1 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, 1300-ohm nominal resistance
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
Cup Wheel Diameter:
12 cm (4.7 in)
Weight:
113 g (4 oz)
6.2 Wind Direction (Vane)
Range:
360° mechanical, 352° electrical (8° open)
Sensor:
Balanced vane, 16 cm turning radius
Settling Time:
20 ms
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 k
Ω
resistance; 1.0% linearity; life expectancy 50
million revolutions
Rated 1 W at 40 °C, 0 W at 125 °C
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