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5-Bar Pressure Plate Extractor.

532-100

Category:

Soils

Sub Category:

Soil Physics

Product Group:

Pressure plate extractors

Used to determine - available water capacity, water retentivity, hydraulic conductivity and field capacity.

Applications include - soil classification and survey, optimisation of irrigation and drainage, calibration of soil water and measuring apparatus for field use.

The pressure plate is used to determine soil water retention and suctions greater than 0.4 bar. The apparatus consists of strongly built metal chambers containing one or more ceramic plates, on to which uniform soil samples are placed. Having attained maximum moisture retention (field capacity) the samples within the cells are then subjected to controlled positive air pressures and water is gradually removed. By careful control of pressure, the various equilibrium conditions of pressure and soil water tension or suction are obtained.

The air pressure is provided either from a compressor, compressed air bottle or nitrogen bottle. The air pressure source must always be routed via a pressure regulation manifold.

ELE can supply three types of pressure plate extraction systems, which cover the pressure range 0-15 bar.  

Description 5-Bar Pressure Plate Extractor
Capacity 4 pressure plate cells. (Up to 48 samples) 
Pressure 0-5 bar extractor (75psi) 
Closure 6 bolts with wing nuts; O-ring seal on lid
Support Clips Stainless steel, adjustable 
Outflow  4 tube assemblies with 3 plug bolts; screw into side wall 
Dimensions  30cm dia x 22cm deep
Weight 10 kg

1-Bar Pressure Plate Cell

532-104

Developed from a high fired Alumina body. Extremely porous, inert to most all solutions, possesses hard exterior and interior surfaces, and pure white in colour. Recommended for standard pressure differentials under 1 Bar (14.5 psi). Typical bubbling pressure: 28 - 32 psi. Effective pore size: 2.5 microns. Hydraulic conductivity: 0.0000086…

3-Bar Pressure Plate Cell

532-106

 A complex mixture of ball clays into a moderately fired ceramic body. Good porosity and good hydrologic flow capability. The material is moderately hard and tannish-white in colour, not recommended for fluid sampling. Recommended for specialised applications where the pressure differentials are under 3 Bars (43.5 psi). Typical bubbling pressure: 46 - 70…

5-Bar Pressure Plate Cell

532-107

Developed from a complex mixture of ball clays into a fired ceramic body. Good porosity and good hydrologic flow capability. The material is very hard and brownish-white in colour, is not recommended for fluid sampling. Recommended for specialised applications where the pressure differentials are under 5 Bar (72.5 psi). Typical…

15-Bar Pressure Plate Extractor.

532-120

Used to determine - available water capacity, water retentivity, hydraulic conductivity and field capacity. Applications include - soil classification and survey, optimisation of irrigation and drainage, calibration of soil water and measuring apparatus for field use. The pressure plate is used to determine soil water retention and suctions greater than…