Met One Instruments 034E Operation Manual page 7

3.0 OPERATIONAL CHECK-OUT AND CALIBATION
3.1 Wind Speed and Direction Sensor Check-Out
A. Rotating the vane in a clockwise direction as viewed from above will increase the
output up to the 360 Degree point and it will start over at 0 Degrees.
B. Spinning the anemometer cup assembly will produce a series of pulses. To verify
sensor output, monitor this signal with either a translator module, data logger or
an ohmmeter. Refer to Frequency vs. Wind Speed Table 3-1. Spin slowly and
monitor output signal. A wind speed calibrator may be used to check operation at
different RPM points. The vane and counterweight must both be removed for
connection to the calibrator motor drive.
C. The 034E wind sensor should be inspected periodically for physical damage to
the vane assembly and cable connections. Inspect all vane assembly parts for
security and damage. Inspect the cup assembly for loose cup arms or other
damage. The cup assembly will affect calibration if a mechanical part has
loosened or has been bent or broken.
034E-9800 REV A
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