The approved Multi Water Sampler MWS 12 is an instrument designed for the collection of water samples in successive water layers. A sturdy array fabricated of stainless steel is equipped with twelve racks to which Plastic Water Samplers and Free Flow Samplers with capacities from 1.7 to 10 litres can be mounted to collect water samples in twelve different depth steps during one operation.
The Multi Water Sampler MWS 12 is equipped with a motor-driven release device with an integrated Depth Meter (measuring range according to customer´s requirements) - the water samplers are closed in the succession of their mounting to the array (i.e. No. 1, 2, 3, ... 10, 11 and 12).
The state-of-the-art electronics, optimized 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 Multi Water Sampler MWS 12 is generally delivered for combined Online/Offline use
Online - water samplers are actuated via push-button control by the mains operated Deck Command Unit. The commands for actuation of the water samplers are given via single or multi-conductor cable between the Underwater Unit and the Deck Command Unit. The Deck Command Unit is equipped with a serial port for data transfer to PC.
Offline - allows operation without an electrical cable, but can be operated with a normal steel wire. Actuation depth for the bottles will be preprogrammed by OceanLab 3 Software.
Together with the optional CT-Set (data rate 1Hz) the system offers the full capability of an oceanographic Multi Parameter Probe. It consists of one conductivity sensor, one temperature sensor and an additional electronics board which are completely integrated into the Motor Unit of the Multi Water Sampler MWS 12.
From the CTD data the system computes salinity, density and sound velocity according to UNESCO formulas.




| Technical Data |
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| Dimensions | diameter 140 cm, height 160 cm |
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| Empty weight | approx. 100 kg without water sampler |
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| Max. operational depth | 3.000 metres |
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| Array / Motor Unit | stainless steel / titanium |
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| Deck Command Unit | Metal housing for use in 19"-rack or as |
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| Data Memory | 16 MByte |
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| Pressure Sensor (Depth Meter) | 0.0….3.000.0 dbar + 0,1% f.s. |
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| Ordering Information |
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| 436 912 | Multi Water Sampler MWS for 12 water sampler from 1.7 to 10 litres. For combined online/offline use Motor Unit with microprocessor, | |
| 436 924 | Multi Water Sampler MWS for 24 water sampler | |
| 450 500 | CT-Set for Multi Water Sampler | |
Options
Slenderized array for 12 water samplers with capacities from 1.7 to 5 litres (Ø 110 cm x 125 cm)
Additional sensors of various parameters
Operational depth down to 6000 metres