Description

Water Sampling System for Oceanography and Limnology

The approved Multi Water Sampler MWS 24 is an instrument designed for the collection of water samples in successive water layers. Only one operation for 24 different samples! The sturdy stainless steel array is equipped with twentyfour racks to which Plastic Water Samplers or Free Flow Samplers with 10 litres capacity can be mounted. The MWS 24 is equipped with a motor-driven release device with an integrated Depth Meter (measuring range according to customers’ requirements). The water samplers are sequentially closed in the succession of their mounting to the array (i.e. No. 1, 2, 3, …, 22, 23 and 24). The state-of-the-art electronics, optimised in power consumption, are designed for ambient temperatures from – 40°C up to +85°C. The maximum operational water depth is 3000 metres. A special version for operational depths down to 6000 metres is available upon request.

The MWS 24 is generally delivered for combined Online/ Offline use and is therefore the ideal all-purpose rosette system for use on any research vessel worldwide.

Online

The water samplers are actuated via push-button control by the mains-operated Deck Command Unit. The commands for the actuation of the water samplers are given via a single or multi-conductor cable between the Underwater Unit and the Deck Command Unit or PC. The Deck Command Unit is equipped with a serial port for data transfer to PC.

Offline

In case a conducting cable is not available on board, the required sampling depth can be pre-programmed via a personal computer. The actuation of the water samplers is then carried out automatically according to the pre-selected depth intervals. All measured data are stored inside the internal data memory (16MB) during the operation and can be read out by a PC when the system is back on board.

CT-Set

Together with the optional CT-Set the system offers the full capability of a state-of-the-art oceanographic CTD probe. The CT-Set consists of one conductivity sensor, one temperature sensor and an additional electronics board which is completely integrated into the Motor Unit of the MWS 24. From the CTD data, the system computes salinity, density and sound velocity according to UNESCO formulas.

Accessories

– Additional sensors of various parameters
– Special version for operational depths down to 6000 metres

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Datasheet

Technical Details