Accession Number : AD0715584

Title :   A High-Speed, Opening-Closing Plankton Sampler (Catcher II) and Its Electrical Accessories,

Corporate Author : BRITISH COLUMBIA UNIV VANCOUVER INST OF OCEANOGRAPHY

Personal Author(s) : Bary,B. McK. ; Frazer,E. J.

Report Date : 01 JAN 1970

Pagination or Media Count : 17

Abstract : The Catcher II described is a high-speed plankton sampler, of moderate size, fitted with an opening-closing gate valve operable either electrically by means of an underwater solenoid, or by two messengers and a two-pin release mechanism. Associated electronic telemetry equipment includes underwater sensors for depth, flow and temperature, data from which are transmitted by frequency multiplex via an armoured towing cable containing a single, coaxial conductor. Signals, displayed on deck, include a trace of the sampler's depth on echo-sounder records. The gear is easy and rapid to operate. (Author)

Descriptors :   (*PLANKTON, SAMPLING), (*OCEANOGRAPHIC EQUIPMENT, DESIGN), VALVES, SOLENOIDS, RELEASE MECHANISMS, DETECTORS, TELEMETER SYSTEMS, ELECTRONIC EQUIPMENT, FLOWMETERS, TEMPERATURE

Subject Categories : Biological Oceanography

Distribution Statement : APPROVED FOR PUBLIC RELEASE