WTS 6-24-47EC
Water Transfer System*
The WTS 6-24EC Water Transfer System* (WTS) is designed to extract in situ dissolved matter such as metals, organic components, and radionuclides in an aquatic environment. A dual multi-port valve directs the water through 24 specific extraction columns for a time-series operation. The positive displacement pump is placed downstream from the columns to prevent sample contamination. Both the multi-port valve and the positive displacement pump are controlled by an internal computer, and can be accessed by an external computer via serial communications (RS-232 port).
The menu-driven software allows the user to enter the initial flow rate, total volume, maximum pumping time, and minimum flow rate. The software is designed to decrease the flow rate as back pressure on a column is increases. This conserves the battery life and does not crush the particulate matter. The internal computer records the instantaneous flow rate and total volume at a user selectable time interval for each filter.
The WTS can be connected to optional sensors such as current meters, fluorometers, and transmissometers. These sensors can automatically activate the extraction process. The internal computer will then recalculate the extraction schedule for the remaining columns. The WTS can be deployed as a component of either an in-line mooring (standard) or of more complex deployments such as an underwater laboratory.
*U.S. Patent #5,341,834 and Japan #248282
Three-year warranty on parts and labor
| Physical |
Length |
165 cm |
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Width |
45 cm |
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Height |
45 cm |
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Weight in air |
48 kg |
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Weight in water |
29 kg |
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Type of deployments |
In-line mooring or as a component |
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| Multi-port valve |
Number of ports |
Dual 25 port valves |
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Drive |
High torque stepping motor with gearhead |
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| Filters |
Holder material |
Polypropylene |
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Filter size |
47 mm diameter |
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Filter type |
GFF or membrane filter |
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Column material |
High density polyethylene or TFE Teflon® |
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Column size |
25 mm diameter x 370 mm length |
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Column types |
Metals, specific dissolved organic compounds, or radionuclides. |
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| Pump |
Flow rate |
50-125 ml/min;optional 100-250 ml/min |
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Maximum volume |
10 liters/filter (<10 µg/liters water) |
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Total 250 liters (optional 500 liters) |
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Volume error |
Average ± 3% total volume |
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Drive |
Brushless DC motor |
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| Controller |
Housing material |
Aluminium, 6061-T6 hardcoat anodized |
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Main battery |
31.5 VDC alkaline battery pack |
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Current consumption |
165 mAh pumping; 120 µAh sleeping |
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Communications |
Serial (RS-232); external computer |
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| Frame |
Material |
316 Stainless Steel, electro-polished |
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Structure |
In-line mooring, weldment |
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Bridle configuration |
4 in-line |
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Frame & bridle eyes |
19 mm diameter, insulated |
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| Operation Conditions |
Maximum depth |
5,500 m |
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Max. deployment length |
14 months |
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Operating temperature |
0 to 50°C, Electronics tested to -10°C |
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