@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:related . skos:related . skos:narrower . skos:altLabel "VI H301 psychrometer" , "VI H301 psychrometer"@en ; skos:broader , ; skos:definition "A precision instrument for the measurement of air temperature and humidity by the wet and dry bulb method. A pair of 100 Ohm 4-terminal platinum resistance elements were enclosed in a double-walled enclosure with an optional radiation shield to minimise thermal radiation errors. The wet bulb element was enclosed by a wick leading to a 500 ml water reservoir (sufficient for 7 days) in a fan-driven airflow. Accuracy was quoted by the manufacturer as 0.2C with a response time of 50 seconds. The instrument was discontinued in 2010."@en ; skos:inScheme ; skos:notation "SDN:L22::TOOL0582" ; skos:note "accepted"@en ; skos:prefLabel "Vector Instruments H301 psychrometer"@en ; skos:related , , . skos:related . skos:narrower . skos:related . skos:narrower . skos:related . skos:related .