Title :
An improved discrete depth sampler for midwater nets
Author :
Brown, C.L. ; Battista, G.F.
Author_Institution :
Naval Underwater Syst. Center New London, New London, CT, USA
Abstract :
This report describes improvements in the electronics system controlling the four-chambered discrete depth sampler (DDS) on an Isaacs-Kidd Midwater Trawl. A resonant reed relay and voltage transfer relays are utilized to control the solenoids that close the doors of the DDS. The improved system is more reliable and allows greater flexibility than the original system. Notes on net speed and filtering efficiency are also given for depths to 2500 meters.
Keywords :
electric control equipment; oceanographic equipment; relays; solenoids; DDS; Isaacs-Kidd midwater trawl; electronics system; four chambered discrete depth sampler; midwater nets; resonant reed relay; solenoid control; voltage transfer relays; Aquaculture; Filtering; Laboratories; Marine vegetation; Oceans; Sampling methods; Tellurium;
Conference_Titel :
Engineering in the Ocean Environment, Ocean '74 - IEEE International Conference on
Conference_Location :
Halifax
DOI :
10.1109/OCEANS.1974.1161427
