Pore Water Vacuum Collection Systems
UMS offers a variety of vacuum systems to meet the needs of your research. Extract representative soil water samples with a constant vacuum, a timed vacuum or a tension-controlled vacuum: with the new VS-systems we can offer you an all-purpose and modern vacuum regulation.
Which Vacuum Should Be Applied?
To extract soil water in the unsaturated zone the soil water tension (retention force) has to be surpassed by the sampler's potential - a vacuum needs do to be applied.
The vacuum should be as close as possible to the in-situ soil water tension, as i.e. carbon will fall out in high vacuum.
Variations of the pressure difference between the sampler's inside and outside will lead to different filtration results - thus, memory effects occur. This is prevented by a tension controlled vacuum unit.
Comparisons
|
Vacuum Collection System |
VPS-2 |
Vaccuporter |
VS-Single |
VS-Twin |
VS-Pro |
|
Vacuum Method |
Hand Operated Pump |
Electric Pump |
Electric Pump |
Electric Pump |
Electric Pump |
|
Discontinuous Sampling |
Yes |
Yes |
Yes |
Yes |
Yes |
|
Continuous Sampling |
No |
No |
Yes |
Yes |
Yes |
|
Tensiometer Controlled Extraction |
No |
No |
Yes |
Yes |
Yes |
|
Vacuum Outputs |
1 |
1 |
1 |
2 |
2 |
|
Digital Display and Keypad |
No |
No |
No |
No |
Yes |
|
External Power Required |
No |
No |
Yes |
Yes |
Yes |
Accessories
Sampling bottles and storage box
Soil water sampling bottles made of Duran glass, available in three sizes.
Benefits
- Implosion proof
- Plastic coating as chip guard
- Silicon rubber gasket with two connectors
- Accesory: Clip for upright attachement on walls
In the sampling bottle box up to 6 sampling bottles can be stored.
Benefits
- The lid is covered with isolating material.
- Latches shut the box securely.
- The suction tubes are led through sealed fittings on the side of the box.
Size: 40 cm x 30 cm x 28 cm
Material: PVC
| Item | Part No. |
| 500 mL bottle | SF-500 |
| 1000 mL bottle | SF-1000 |
| 2000 mL bottle | SF-2000 |
| Wall clip | SF-CLIP |
| Box with lid | SF-Box |
TensioLINK USB converter
The tensioLINK USB converter is used for directly connecting sensors and devices with serial tensioLINK to a PC. One can configure features and read out measured data.
UMS devices with 8pin M12 connectors (e.g. TS1 or T8 tensiometers) could be directly connected to the converter without the need for a further power supply. The sensor is powered through the USB interface.
Use with the PC-Software tensioVIEW. Manual Software and Driver come along with supplied CD.
| Sensor Supply | 9 VDC / 100 mA tolerance +1 V |
| Short circuit | 2 Min. |
| Galvanic isolation | 1 kV |
| Serial sensor interface | RS485-2 wire, ESD protection 15 kV |
| USB interface | compliant to USB 1.1 und 2.0 |
Support
Information Sheet
Manuals
Request Support
Email: support@decagon.com
Phone: 800-755-2751 or
509-332-2756
Fax: 509-332-5158
Or send us an information request:
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VacuPorter Vacuum Case
The simplest method Evacuate your sampling bottle down to approximately 50 kPa. If the soil water tension is lower than 50 kPa, soil water solution will be extracted until vacuum and soil water tension are equalized. When the samples are collected, the bottle is evacuated again. This portable… » Learn more
VPS-2 Vacuum Pump
Extremely rugged hand-operated vacuum floor pump with large swept volume for easy evacuation of sampling bottles in the field. Applications Evacuation of sampling bottles Collection of soil water solution from sampling… » Learn more
VS Vacuum System
The VS series of vacuum systems from UMS are capable of applying a constant vacuum or tension controlled vacuum for long-term monitoring projects. » Learn more
VS-Pro Vacuum System
The VS-pro series of vacuum systems from UMS are capable of applying a constant vacuum or tension controlled vacuum for long-term monitoring projects. Keyboard display allows for status checks and configuration without hooking it up to your PC. » Learn more