08.65 Air Permeameter For Soil
- Air permeameter apparatus measures the permeability or conductance of an (undisturbed) soil sample.
- Air permeability is the property of the soil pore system allowing air to flow through.
- Air will flow easily through the soil with large pores and good connectivity between them. Small pores with the same degree of connectivity would have lower permeability because air will flow through the soil more slowly.
- Air permeability is also a function of soil texture and macro-pore volume and connectivity, and a function of the matric potential and water content, because continuous macro-pores which would normally conduct air become increasingly filled with water with an increasing load, depending on the soil and initial water content.
- Air permeability is required when considering quantified data and interpretation of the pore continuity and its dependency on the matric potential, as well as the effect of mechanical stress application on the anisotropy of pore structure for example.
Benefits Air permeameter for soil
-
Easy manual operation;
-
Proven accurate measurement principle;
-
Multi sample sizes using the fast-exchange sample holder;
-
Sample sizes: Ø 53x50 h 51 mm; Ø 0x56 h 40.5 mm and Ø 103x100 h 30 mm;
-
Excellent price-quality ratio;
-
Developed in cooperation with Christian-Albrechts University, Kiel.
Applications
-
Erosion, drainage, irrigation;
-
Geo-Hydrologic research;
-
Environmental research;
-
Basic material research.
User groups
-
Laboratories;
-
Research institutes;
-
Educational institutes;
-
Universities.
| Range | Accuracy | Remarks | |
| Operating pressure max. | 0.5 bar | external pressure regulator and dryer are required | |
| Restricted air pressure scale | 600 hPa | 1.6% | |
| Sample pressure scale | 15 hPa / cmH2O | 0.1 hPa / cmH2O | scale zero mechanism |
| Temperature | 0-60 ºC | 2% | restricted air temperature |
| Flowmeter 1 range | 0.1- 0.6 l/min | 1.25% FSD* | |
| Flowmeter 2 range | 0.2- 2.0 l/min | 1.25% FSD* | |
| Flowmeter 3 range | 1.0- 10 l/min | 1.25% FSD* |
| Environmental conditions | |
| Temperature | 15-35 ºC (stable room temperature is highly recommended) |
| Dimensions | 53 x 28 x 51 cm (width x depth x height) |
| Weight | approx. 18 kg. |
