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Specification

  • Specimen size: 63.5 x 140 mm (dia x l max).
  • Chamber: Transparent plastic, single section
  • Base: Cast aluminium
  • Top seal: Plated steel with gaskets
  • Porous Stones: 62.7 x 12.7 mm (diameter x thickness)
  • Constant head: Plastic, funnel reservoir, 550 mmmaximum head
  • Falling head: Graduated pipette, 100 ml x 0.2 ml, 1000 mm maximum head
  • Weight kg: 5
  • Specimen Size: 2-1/2” diam. x 5-1/2” l. max. (63.5 x 140 mm).
  • Capacity: Clear lucite; 1/4” (6.3 mm) wall; single section.
  • Base: Cast aluminum.
  • Top Seal: Plated steel with gaskets.
  • Porous Stones: Mounts at top and bottom; 2.47” diam. x 1/2” thick (62.7 x 12 .7 mm); 105-120 permeability rating; 300 micron, average pore size.
  • Constant Head: Plastic;  funnel reservoir; 55 cm maximum head.
  • Falling Head: Graduated pipette; 100 mm x 0.2 mm; 100 cm. maximumhead.
  • Weight: Net 11 lbs. (5 kg).

Accessories and Spares/Consumables

Type Product Name Product Code Standard Code
Spare/Consumable Porous Stone 2.47" x .50" T-308 NA Visit Page

•Plated steel chamber head assembly
•Corrosion-resistant cast aluminum base assembly
•Includes accessories for conducting both constant and falling head permeability studies

This combination permeameter has a transparent plastic chamber for soil specimens of either fine-grained or coarse-grained soils. Generally, soils containing 10 percent or more particles passing a 75 μm sieve are tested using the falling head assembly. More granular soils, containing 90 percent or more particles retained on the 75 μm sieve, are tested using the constant head
assembly.

The cell is sealed at the top so that a vacuum may be used to saturate the specimen. Porous stones located at the top and bottom of the cell prevent sample flaking or washout. For constant head tests, a plastic funnel reservoir is mounted on an upright attached to the cell, providing a maximum head of 550 mm. Falling head tests are performed using the graduated pipette falling head reservoir, which gives a maximum head of 1000 mm and is graduated 0.2 ml.

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