Owner's manual

R.M. Young Wind Sentry
5. Wire according to the wiring diagram generated by Short Cut.
5. Overview
The 03002 Wind Sentry Set is used to measure horizontal wind speed and
direction.
Wind speed is measured with a three cup anemometer. Rotation of the cup
wheel produces an ac sine wave voltage with frequency proportional to wind
speed. This is a special version of the 03102 built for Campbell Scientific by
R.M. Young that has shielded bearings rather than sealed bearings. The
shielded bearings provide a lower starting threshold than sealed bearings.
Vane position is transmitted by a 10-kΩ potentiometer. With a precision
excitation voltage applied, the output voltage is proportional to wind direction.
The 03101 Anemometer and 03301 Vane can be ordered as separate sensors,
which are also covered in this manual. These two sensors combined differ
from the 03002 only by the absence of a junction box. The R.M. Young
Instruction Manual includes additional information on the operating principles,
installation, and maintenance of the sensor.
Cable length for the Wind Sentry is specified when the sensor is ordered.
TABLE 5-1 gives the recommended lead length for mounting the sensor at the
top of the tripod/tower with a CM200-series crossarm.
TABLE 5-1. Recommended Cable Lengths
CM106 CM110 CM115 CM120 UT10 UT20 UT30
12 ft 15 ft 20 ft 25 ft 15 ft 25 ft 38 ft
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