25-0562
Category:
Soils
Sub Category:
Permeability
Product Group:
Constant Head Sand/Gravel Permeameters
3.0” (76.2 mm) i.d.
Manometer Panel and Constant Head Tank System; not included, order separately.
| Description | Constant Head Sand/Gravel Permeameters, 3" (76.2 mm) |
| Clamping Rods | Three; quick release type. |
| ASTM D2434 | Yes |
| Construction | Anodized aluminum end caps and clamping ring acrylic chamber. |
| Manometer Parts | Two. Located on the acrylic chambers side wall. The distances between ports are equal to the diameter |
| Clamping Rods | Three; quick release type. |
| Weights | Net 7-12 lbs. (3.2-5.4 kg). |
25-0568
ting valve for flow control of water. A porous media is used at the bottom of the tank to filter out air bubbles.The unit maintains a constant water head by utilizing an overflow port. It also allows for connection to a tap water or de-aired water source. A wall mounting support, consisting of two rails with adjustable height brackets and tubing for connection between the tank and permeameter is included.The system consists of an acrylic tank with regulating valve for flow control of water. A porous media is used at the bottom of the tank to filter out air bubbles.
25-0567
valving mounted on an aluminum rail with a 100 cm long dualgraduated scale. Each tube has its own valve, making it possible to run two independent permeability tests.
25-0623
•Plated steel chamber head assembly•Corrosion-resistant cast aluminum base assembly•Includes accessories for conducting both constant and falling head permeability studiesThis 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 headassembly.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.