@prefix cpm: . @prefix dc: . @prefix dcat: . @prefix dce: . @prefix dct: . @prefix grg: . @prefix iop: . @prefix ns0: . @prefix ns1: . @prefix owl: . @prefix pav: . @prefix prov: . @prefix puv: . @prefix qudt: . @prefix rdf: . @prefix rdfs: . @prefix reg: . @prefix semapv: . @prefix skos: . @prefix sssom: . @prefix void: . skos:related . skos:member . skos:altLabel "Vaisala WAV151 vane" , "Vaisala WAV151 vane"@en ; skos:broader , ; skos:definition "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 ; skos:inScheme ; skos:notation "SDN:L22::TOOL0127" ; skos:note "accepted"@en ; skos:prefLabel "Vaisala WAV151 wind vane"@en ; skos:related , . skos:narrower . skos:related . skos:related . skos:narrower . skos:narrower . skos:narrower . skos:related .