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Soil
Guelph and Ksat
09.07 Guelph constant head permeameter
The Guelph permeameter is a ‘constant head’ permeameter that operates in accordance with the principle of the Mariotte bottle. After boring a hole the Guelph permeameter is placed. The water from the permeameter slowly flows into the auger hole and penetrates into the soil. At a certain moment a saturated ‘bulb’ is formed and the outflow of water from the storage cylinder reaches a constant value (that is measured). These measuring data together with the diameter of the auger hole and the level of the water in the auger hole, are used to determine the (saturated) hydraulic conductivity of the soil.
09.11 Ksat constant head permeameter
The Ksat constant head permeameter is an instrument that provides the means to collect data for determining in situ saturated hydraulic conductivity of the vadose (unsaturated) zone easily and conveniently. The measuring procedure is known as constant head well permeameter technique, shallow well pump-in method or bore hole infiltration test. Before the equipment is used a hole is augered (the bottom of the hole must be plane (use the Riverside auger). The main unit is used for measuring hydraulic conductivity to a depth of 2 m. The depth of measurement can be easily increased to 4 m by attaching a set of constant head tubes to the main unit. To measure below 4 m depths, a special flow measuring reservoir and a pressure transducer (available as optionals) are required.
Applications
- In situ permeability tests for drainage and/or irrigation
- Determination of hydraulic conductivity of the unsaturated zone for septic system design, landfill design, and retention pond
construction
The Guelph permeameter is a ‘constant head’ permeameter that operates in accordance with the principle of the Mariotte bottle. After boring a hole the Guelph permeameter is placed. The water from the permeameter slowly flows into the auger hole and penetrates into the soil. At a certain moment a saturated ‘bulb’ is formed and the outflow of water from the storage cylinder reaches a constant value (that is measured). These measuring data together with the diameter of the auger hole and the level of the water in the auger hole, are used to determine the (saturated) hydraulic conductivity of the soil.
09.11 Ksat constant head permeameter
The Ksat constant head permeameter is an instrument that provides the means to collect data for determining in situ saturated hydraulic conductivity of the vadose (unsaturated) zone easily and conveniently. The measuring procedure is known as constant head well permeameter technique, shallow well pump-in method or bore hole infiltration test. Before the equipment is used a hole is augered (the bottom of the hole must be plane (use the Riverside auger). The main unit is used for measuring hydraulic conductivity to a depth of 2 m. The depth of measurement can be easily increased to 4 m by attaching a set of constant head tubes to the main unit. To measure below 4 m depths, a special flow measuring reservoir and a pressure transducer (available as optionals) are required.
Applications
- In situ permeability tests for drainage and/or irrigation
- Determination of hydraulic conductivity of the unsaturated zone for septic system design, landfill design, and retention pond
construction
