@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: . rdf:type skos:Concept ; dce:identifier "SDN:L22::TOOL1225" ; dc:date "2018-04-20 17:20:46.0" ; dc:identifier "SDN:L22::TOOL1225" ; dc:isVersionOf ; pav:authoredOn "2018-04-20 17:20:46.0" ; pav:version "1" ; void:inDataset ; owl:deprecated "false" ; owl:versionInfo "1" ; skos:altLabel "Airmar CS4500" ; skos:broader , ; skos:definition "A speed sensor that is used on all types and sizes of sailboats and powerboats It measures boat speed using ultrasonic pulses to collect echoes from small particles in the water as they pass under two transducers embeded in the sensor. The time taken for particles to travel between transducers is used to calculate vessel speed. It has a transmit frequency of 4.5 MHz and pulse repetetion frequency of 5.5 kHz. Low-profile, plastic, or bronze housings available. Speed range: 0.1-40 knots. Speed accuracy: 0.1 knots."@en ; skos:notation "SDN:L22::TOOL1225" ; skos:note "accepted"@en ; skos:prefLabel "Airmar CS4500 (ultrasonic) water speed sensor"@en ; skos:related .