@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:altLabel "Biospherical QSP-2155" , "Biospherical QSP-2155"@en ; skos:broader , ; skos:definition "A custom-built version of the QSP-2150 Quantum Scalar Irradiance PAR Sensor, the QSP-2155 is designed for use on Teledyne Webb autonomous underwater vehicles, such as gliders. It is electronically and functionally equivalent to the QSP-2150, developed for multi-parameter logging applications, but its housing is tailored specifically for glider use. It uses a scalar irradiance collector to obtain a uniform directional response over 3.6-pi steradians. A stainless steel encased optical light pipe guides flux from the collector to a filtered silicon photodetector, resulting in a flat quantum response over the PAR spectral region (400-700 nm). The sensor produces a digital ASCII output and uses a Teledyne-Impulse MCBH series connector. It uses a 24-bit analog to digital converter (ADC) operating at frequencies of 4 to up to 250 Hz. It has a stability (dark reading) of < 0.003 microE m-2 sec-1 and operates in waters depths up to 2000 m."@en ; skos:inScheme ; skos:notation "SDN:L22::TOOL1368" ; skos:note "accepted"@en ; skos:prefLabel "Biospherical Instruments QSP-2155 underwater PAR sensor"@en ; skos:related , . skos:narrower . skos:related . skos:related . skos:narrower . skos:related . skos:narrower .