. . . . . . . . . . . . . . "Biospherical QSP-2150" . "Biospherical QSP-2150"@en . . "2019-01-30 12:22:02.0" . "Biospherical Instruments QSP-2150 underwater PAR sensor"@en . "SDN:L22::TOOL1305" . . "accepted"@en . "1" . . . "SDN:L22::TOOL1305" . "false" . "2019-01-30 12:22:02.0" . "SDN:L22::TOOL1305" . . "Quantum Scalar Irradiance PAR Sensor. Developed for multi-parameter logging applications. 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 . "1" . . .