Research Vessels

Marine Technology

Pool Equipment

Data Management

Checklist & Forms

Links

Cruise Plan

 

Standard CTD System
Goal	General purpose high accuracy CTD-operations including watersampling and the use of the following additional sensors:  fluorometer, DO-sensor, transmissiometer and PAR.
Description	The system consists of a SBE9plus underwaterunit, a SBE11plusV2 deckunit, a SBE32 caroussel, a SBE3plus thermometer, a SBE4 conductivity sensor, a SBE5T underwaterpump, a SBE43 dissolved oxygen sensor, a Chelsea Aquatracka MKIII fluorometer, a Wetlabs C-Star transmissiometer (25 cm, deep, red), a Satlantic logaritmic PAR-sensor for underwater PAR  and a Satlantic lineair PAR-sensor for deck reference.   For watersampling 24 watersamplers manufactured by Ocean Test Equipment are available. These 12-liter samplers are equipped with external stainless steel springs.   For bottomdetection 2 devices are installed: A Benthos PSA-916 altimeter and a bottom switch with a weight. The SBE11+ has a NMEA interface for navigational data.  On board R.V. Pelagia a Seapath 2000 shipmotion sensor provides high accuracy position-, date- and time-data in NMEA-0183  RMC-format. On the logging computer Seasoft for Windows is installed (Seasave V7.20 and SBE Data Processing V7.20)
Remarks	The CTD frame is made from stainless steel and consists of 2 parts: a core-part that contains all the electronic modules and an outer part containing the samplingbottles.   For CTD-operations during heavy seas a smaller outer frame without sampling-bottles is available. Detailed information about the sensors (e.g accuracy) and other system modules are available via the links.   When necessary extra sensors such as a secondary pumped CT-set, SBE35 reference-thermometer or SIS electronic reversing pressure meters (ERPM-6000X) are available.
Contact	Sven Ober