VAPOR SORPTION ANALYZER

Measurements: Soil Suction, Water Activity, Water Potential

Applications: Moisture Release Curves

Automatic Static & Dynamic Soil Water Characteristic Curves

The Vapor Sorption Analyzer (VSA) brings click-and-read efficiency to soil water characteristic curves (SWCC). In 24 to 48 hours, the VSA generates curves with up to 200 data points (water potential vs. water content) for both adsorption and desorption. 

The VSA works in the dry (-10 to -475 MPa) range. You can create automated soil water characteristic curves and generate all the correlations with clay activity, surface area, and swelling potential. 

With the new static feature, you can hold humidity constant and look at the way soil takes up water into its crystal structure (2:1 clays) and monitor water content change over time. 

 

Benefits

  • Rapid Soil Water Characteristic Curve generation.
  • Fast expansive soil characterization.

WATER POTENTIAL RANGE -10 to -475 MPa
ACCURACY

±1 MPa, or ± 1%

ISOTHERM METHODS Dynamic Dew Point Isotherm (DDI) & Static (DVS)
EXTERNAL GAS Not needed. If external gas is used, no more than 7 PSI.
WATER RESERVOIR 20 mL
SAMPLE WEIGHT RANGE 500-5000 mg
SAMPLE CUP VOLUME 10 cc
WEIGHT ACCURACY ± 0.1 mg
TEMPERATURE CONTROL
RANGE

15° to 60°C (sample chamber temperature,sample temperature is measured separately, and may vary)

TEMPERATURE OPERATING
RANGE

15° to 40°C 

HUMIDITY 
OPERATING
RANGE

10-90% non-condensing

COMPUTER 
INTERFACE

USB

UNIVERSAL 
POWER

110 V to 220 V AC 50/60Hz

DIMENSIONS

W 25.4 cm (10 in) x L 38.1 cm (15 in) x H 30.5 cm (12 in)

WEIGHT

12.7 kg (28 lbs)

 

waterpotential_graph-Edit-web.png

Disposable Sample Cups

15 ml disposable sample cups come in lots of 100 or 150. Tight seal prevents changes in water activity as the sample is stored or comes to equilibrium.

Stainless Steel Sample Cup

Ideal for use with drying ovens. Set of 10.

Request Support

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