@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:narrower . skos:related . skos:member . skos:related . skos:narrower . skos:narrower . skos:narrower . skos:altLabel "Nortek 1 MHz AWAC" , "Nortek 1 MHz AWAC"@en ; skos:broader , , , , ; skos:definition "An instrument that simultaneously measures current profiles and wave height and direction designed for coastal monitoring. It transmits at 1 MHz giving a range of 30 m (waves measurable with deployment depth up to 35 m) and a cell size of 0.25-4 m (maximum 128 cells) and has four beams, one vertical and the other three 120 degrees apart slanted at 25 degrees. Current speeds up to 10 m/s may be measured at an accuracy of 1% of measured value ±0.5cm/s. Temperature (embedded thermistor with 0.1C accuracy and 0.01C resolution), compass (magnetometer with 2 degrees accuracy and 0.1 degree resolution providing tilt <15 degrees), tilt (liquid level) and pressure (piezo resistive with accuracy of 0.5% (optional 0.1%) full scale - usually 100m - and resolution of 0.005% full scale) sensors are provided as standard."@en ; skos:inScheme ; skos:notation "SDN:L22::TOOL0897" ; skos:note "accepted"@en ; skos:prefLabel "Nortek 1 MHz acoustic wave and current profiler"@en ; skos:related . skos:narrower . skos:narrower . skos:narrower . skos:narrower . skos:narrower . skos:narrower .