Campbell Scientific 27106T Gill Propeller Anemometer - Manual (Page 5)

27106T Gill Propeller Anemometer
1. General Description
The 27106T Gill Propeller Anemometer sensor is used to measure vertical
wind speed. Wind speed is measured with a helicoid-shaped, four-blade
propeller. Rotation of the propeller produces an analog voltage signal
proportional to wind speed with polarity determined by the direction of the
wind.
The R.M. Young Instruction Manual includes additional information on the
operating principles, installation and maintenance of the sensor.
Lead length for the 27106T is specified when the sensor is ordered. Table 1-1
gives the recommended lead length for mounting the sensor at the top of the
tripod/tower with a 019ALU or CM200 series crossarm.
TABLE 1-1. Recommended Lead Lengths
CM6 CM10 CM110 CM115 CM120 UT10 UT20 UT30
10’ 13’ 13’ 19’ 24’ 13’ 24’ 34’
The 27106T ships with:
(1) ResourceCD
(1) 1180 Mount
2. Specifications
Range
Axial
Flow: 0 to 90 mph (0 to 40 m/s)
All Angles: 0 to 80 mph (0 to 35 m/s)
Threshold Sensitivity*: 0.8 mph (0.4 m/s)
Distance Constant*: <6.9 feet (2.1 m)
Pitch: 11.8 inch (30.0 cm) air passage per
revolution
Signal Output: Analog DC Voltage proportional to axial
wind component. Polarity reverses with
reverse rotation.
1800 rpm (500 mV) = 9.0 m/s (20.1 mph)
Operating Temperature: -50° to +50°C
Propeller Description: 4-blade helicoids propeller molded of
carbon fiber thermoplastic
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