"1" . "Vaisala WAV151 vane" . "Vaisala WAV151 vane"@en . . . "1" . "SDN:L22::TOOL0127" . . . "2010-05-18 16:10:58.0" . "false" . "Vaisala WAV151 wind vane"@en . . "accepted"@en . "2010-05-18 16:10:58.0" . "SDN:L22::TOOL0127" . . . "SDN:L22::TOOL0127" . . "A counter-balanced, low-threshold, optoelectic wind-vane. Infrared LEDs and phototransistors are mounted on six orbits on each side of a 6-bit GRAY-coded disc. Turning the vane causes the disc to change the code received by the phototransistors."@en .