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HYPROP© - Laboratory evaporation method for the determination of pF-curves and unsaturated conductivity
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HYPROP© - Laboratory evaporation method for the determination of pF-curves and unsaturated conductivity

Harga:Telp
Cara Pembayaran:Transfer Bank (T/T), Tunai
Negara Asal:Jerman
Keterangan:The evaporation method according to Wind/ Schindler is a simple and fast technique to determine retention curves of soil samples in standard 250 ml soil sampling rings. The unsaturated conductivity is determined by measuring the soil water tension with miniature Tensiometers in two levels inside the sample, and then correlated to the soil water tension or the moisture content.

Durner and Peters developed the robust correlation procedure to link the hydraulic functions ( SHYPFIT 2.0, Peters and Durner, 2006b) . The data is fitted to a selectable standard model, i. e. van Genuchten/ Mualem, bimodal van Genuchten/ Mualem or Brooks and Corey. The Model parameters can be set before, during or after a measuring procedure. Thus, the results are verified and the values for dry range and saturation are calculated according to the selected model.

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.

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)

Technical Information
Sensor unit

Measuring range for each Tensiometer + 20 hPa ... -1200 hPa / -2500 hPa
Resolution 0, 01 hPa
Accuracy 1, 5 hPa ( 0hPa ... 800 hPa)
Case/ Dimensions without soilsample ring PA66GFK, h= 60 mm, 80 mm
Interface RS485 tensioLINK
Laboratory scale ( optional)

Measuring range Max 2200g
Resolution 0, 01g
Accuracy 0, 1g
Interface RS232

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© - Laboratory evaporation method for the determination of pF-curves and unsaturated conductivity
HYPROP© - Laboratory evaporation method for the determination of pF-curves and unsaturated conductivity
HYPROP© - Laboratory evaporation method for the determination of pF-curves and unsaturated conductivity
HYPROP© - Laboratory evaporation method for the determination of pF-curves and unsaturated conductivity
HYPROP© - Laboratory evaporation method for the determination of pF-curves and unsaturated conductivity
HYPROP© - Laboratory evaporation method for the determination of pF-curves and unsaturated conductivity

Execute a measurement

If a sample unit is placed on the scale the software automatically starts the weighing menu.
If more than one sample is tested at a time each sample is placed on the scale in turn, for example twice a day. The software automatically recognizes each sample unit and stores the weight in correlation to this sample. A maximum of 20 samples can be tested simultaneously.
Independent from the weighing the soil water tensions are automatically measured. Pressure transducers and electronics are housed in the sensor unit, and all sensor units are linked with the tensioLINK bus to your PC for continuous logging of the soil water tension.

In the software available scales ( Manufactures Typ)


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Kontak Perusahaan
Nama:Tn. Ernest Haliman [Penjualan]
E-mail:
Nomer HP:08988847027
Nomer Telpon:62-21-6312222
Nomer Faks:62-21-6321080
Alamat:Jl kaji no 49/51 Jakarta Pusat
jakarta Pusat 10130, Jakarta
Indonesia
http: / / maps.google.co.id/ maps? q= jalan+ kaji+ no+ 49
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