The VS series of vacuum systems from UMS are capable of applying a constant or tension-controlled vacuum for long-term monitoring projects.
The Constant Vacuum Method
The constant vacuum method is continuously maintained by a regulated vacuum pump. The vacuum can be set between atmospheric pressure and 85 kPa.
Tension Controlled Extraction
A tensiometer measures the soil water tension. The programmable vacuum station VS automatically supplies a vacuum in correspondence to the measured tension. Due to the numerous functions of the unit, an optimal adaptation to the sampling task is possible.
Applications
Long term monitoring projects
Studies on leachate under defined conditions
Soil water extraction from a certain pore size with a vacuum which is exactly suitable to the pore size
Lysimeter sites
Benefits
High accuracy vacuum pump
Two vacuum outlets
Selectable constant or tension controlled vacuum
Optimized for use with rechargeable batteries
Input for one tensiometer: T8, T4, or T5
Multiple configuration options
Integrated datalogger
