VS-SINGLE/VS-TWIN TENSIOMETER CONTROLLED VACUUM SYSTEMS

Measurements:

Applications:

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

 

Limits

Configurable only by PC or Laptop

SUPPLY 10.5 to 15 VDC
CURRENT CONSUMPTION  
  • Operating Average
approx. 15 mA
  • Standby
approx. 1 mA
  • While Regulating
50 to 800 mA
INTERFACE tensioLINK, RS485
ANALOG OUTPUT 2 x 0 ... 1 V, ... 2 V, ... 5 V
VACUUM REGULATION  
  • Range
0 to -85 kPa
  • Accuracy
± 0.05 kPa
MEMORY 5000 readings
DIMENSIONS 26 cm x 16 cm x 10 cm
PROTECTIVE RATE IP 66
OPERATING TEMP. -10°C to 45°C
ENCLOSURE Aluminum

 

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

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
  • Accessory: Clip for upright attachment 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 and 2.0

 

Request Support

Email: support@decagon.com
Phone:509-332-2756
Fax: 509-332-5158