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Complete Moisture Characteristics in 3-5 Days

HYPROP is a modular lab instrument that generates a moisture characteristic curve and determines the unsaturated hydraulic conductivity of soil samples in standard 250 ml soil sampling rings. After setup, the system generates the moisture characteristic while running unattended.

Highly Accurate

Two precision mini-tensiometers measure water potential at different levels within the sample while the sample rests on a precision laboratory scale (2000 gram range; 0.01 gram resolution). As the sample dries, changes in water potential are correlated to changes in moisture content using the Wind/Schindler evaporation method.

Verified Results

Results are verified and values for dry range and saturation are calculated according to a selected model (i.e., van Genuchten/Mualem, Bimodal van Genuchten/Mualem, or Brooks and Corey.) Model parameters can be selected before, during, or after the measurement procedure.

The advantage compared to other methods is that the hydraulic properties are determined during a natural drying process of the soil.

HYPROP"s outstanding features are the simple handling and the modular setup. For a start up you just need the HYPROP starter set and a scale. Existing laboratory scales, minimum requirements are a serial connection and a measuring range of 2000 grams, can be integrated. This set can be extended to up to 20 sample units.

Together with the correlation procedure you get a truly practical method which offers extraordinary results in the determination of hydraulic functions with low measuring expenditure.

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Advantages

·         Easy and flexible handling

·         Usage of intact standard sampling rings without perforation

·         Tensiometer shafts are installed into the sample from the bottom side

·         Low expenditure of time and costs

·         Suitable for mobile applications

·         High-quality results for the water retention curve especially in the range close to saturation

·         The hydraulic functions are consistently proved by numerous readings

·         T5x Tensiometers may measure beyond 250 kPa due to boiling retardation

·         The mathematical functions are profoundly adapted

·         Simultaneous measurement of water retention curve and hydraulic conductivity

·         Suitable for all soils (provided Tensiometers can be installed)

·         No special requirements for the ambient conditions. Only the evaporation conditions should remain more or less constant during a measurement

·         An existing scale with serial port can be connected to the system

·         Extendable to up to 20 assemblies for one scale

Limitations

·         The measuring range is limited to the measuring range of the Tensiometers

·         Poor resolution of the hydraulic conductivity near saturation (particularly in sandy soils)

Included in Delivery

·         Sensor unit

·         Sensor unit connecting cable

·         Soil sampling ring, 250 ml

·         Silicone gasket

·         Tensiometer shafts 12,5 mm and 37,5 mm

·         Auger positioning tool

·         Tensiometer auger

·         Saturation bowl

·         Refill set in carrying case

·         Fibrous web, 15 cm x 15 cm

·         tensioVIEW software on CD

·         tensioLINK® USB adapter and connecting cable

·         tensioLINK® T-piece junction plug

·         Mains power supply unit

·         Hyprop Balance

Specifications