"false" . "2016-06-20 10:24:20.0" . "SDN:L22::TOOL1006" . "Vaisala Present Weather Detector PWD20"@en . "1" . . "SDN:L22::TOOL1006" . . . "Vaisala PWD20" . "Vaisala PWD20"@en . . . "2016-06-20 10:24:20.0" . "SDN:L22::TOOL1006" . . "Vaisala Present Weather and Visibility sensor PWD20 is a compact and light-weight probes that provide accurate measurements of prevailing visibility. This sensor is able to measure visibility between 10m and 20,000m."@en . "accepted"@en . . "1" .