The VS-pro series of vacuum systems from UMS are capable of applying a constant or tension-controlled vacuum for long-term monitoring projects.  Keyboard display allows for status checks and configuration without hooking it up to your PC.

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
• Defined pore water sampling
• Defined leachate measurements
• Lysimeter sites
• Tension controlled sampling

Benefits

• LCD display and keypad for basic status check and configuration
• Continuous display of readings and status on the LCD
• LCD backlight and multicolor LED
• High accuracy vacuum pump
• Two vacuum outputs
• Selectable constant or tension controlled vacuum
• Optimized for use with batteries or they can be hardwired and plugged into your power supply
• Option for tensiometer input: T8, T4, or T5
• Multiple configuration options
• Integrated data logger

COMPARISONS