Tension infiltrometer enhancements with automated pneumatic control and more durable base plate

Autor:	John S. Selker, B. A. Flugstad, S. F. Kelly, Richard H. Cuenca, Jonathan D. Suter
Rok vydání:	2009
Předmět:	Engineering business.industry Mechanical engineering Thermal conduction Pressure head Permeability (earth sciences) Infiltration (hydrology) Geotechnical engineering Infiltrometer Boundary value problem Pneumatic flow control business Water Science and Technology Field conditions
Zdroj:	Water Resources Research. 45
ISSN:	0043-1397
DOI:	10.1029/2008wr007075
Popis:	[1] Measurement of soil hydraulic retention and conduction parameters using tension infiltrometers has been found to be useful but has suffered from unreliable instrument membranes at the soil interface and the need for manual control, which limits the range of boundary conditions that can feasibly be established. An automated design is presented that is capable of maintaining time-varying pressure and flux using high-speed computer-regulated pneumatic valves. Further, a durable stainless steel supply membrane designed to withstand multiple uses under harsh field conditions with bubbling pressure head
Databáze:	OpenAIRE
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