@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:member . skos:narrower . skos:altLabel "PA 11 barometer" , "PA 11 barometer"@en ; skos:broader , ; skos:definition "An aviation quality digital barometer providing accurate and reliable pressure measurement over the range of 800 to 1050 mb.It had a unique construction consisting of three independently operating sensors controlled by a microprocessor. Triple redundancy ensured excellent long-term stability and measurement accuracy. Short term accuracy was determined by WMO as about 0.2 hPa and long-term accuracy (over approximately a year) was determined as approximately 0.35 hPa or 0.45 hPa if subjected to temperature variations in excess of 20C."@en ; skos:inScheme ; skos:notation "SDN:L22::TOOL0780" ; skos:note "accepted"@en ; skos:prefLabel "Vaisala PA 11 digital barometer"@en ; skos:related . skos:related . skos:narrower . skos:narrower . skos:narrower . skos:related .