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Constant Head permeability apparatus
Constant Head permeability apparatus (Product Code: SLE/CE/59) is a Perspex permeameter cell used to measure the permeability of relatively coarse-grained soils such as sands and gravel in soil mechanics laboratories. It is offered in 75 mm and 114 mm nominal cell diameters, with pressure points at different levels that connect to a manometer stand and a constant level tank. Jain Scientific Equipments Pvt Ltd (ScienceLab), the OEM manufacturer, makes it at its own factory in Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Method | Constant head; the apparatus is used for laboratory determination of soil permeability using a constant or a variable head |
| Suitable soils | Relatively coarse-grained soils such as sands and gravel |
| Permeability cell | Perspex, mounted on a detachable aluminium base and head |
| Models | 75 mm and 114 mm nominal cell diameter |
| Maximum particle size | 10 mm |
| Recommended permeability range | 10-3 to 10-7 cm/s (as listed) |
| Connections | Pressure points at different levels, to be connected to the manometer stand and the constant level tank |
| Product code | SLE/CE/59 |
| Manufacturer | Jain Scientific Equipments Pvt Ltd (ScienceLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
What Is the Constant Head Permeability Apparatus Used For?
Water flows through the soil specimen in the cell under a head kept steady by the constant level tank. Once flow is steady, the volume collected over a measured time and the head difference read on the manometer between two pressure points give the coefficient of permeability through Darcy’s law. The transparent Perspex cell lets students watch saturation and spot air pockets or piping.
Coarse soils are free-draining, so the constant head method gives a measurable flow in a short time; for fine-grained clay-like or silty soils, the falling head method is recommended instead. Keep particles to 10 mm or less, use de-aired water and saturate the specimen fully before readings. Students and consultants use this engineering lab equipment in India for drainage, filter and earth-dam design exercises.
What to Specify When Ordering
- Cell size: 75 mm or 114 mm nominal diameter
- Whether the manometer stand and constant level tank should be quoted with the cell
- Number of cells for parallel testing
- Whether a falling head permeability apparatus is also needed for fine-grained soils
OEM Manufacturer
Registered as Jain Scientific Equipments Private Limited (CIN U29309HR2020PTC087597) and trading as ScienceLab, the company is the original equipment manufacturer of this permeameter. Production takes place at its licensed factory premises at 449, HSIIDC Industrial Area, Saha, Ambala, under Factory Licence AMB-ONLINE-CHD-J-414.
Universities, polytechnics, geotechnical consultants, dealers and importers are supplied factory-direct, and repeat-order or spare-part enquiries go straight to the manufacturer. Visit the company profile for more about ScienceLab.
Related Civil Engineering Lab Equipment
These soil testing items from the same range are used with the constant head permeameter:
- Falling head permeability apparatus — the variable-head method for fine-grained soils
- Test Sieves — for grading the sample and removing particles over 10 mm
- Relative density test apparatus — determines the density state of the sand being tested
- Moisture Tins — for moisture content of the soil sample
See the full Civil Engineering Lab Equipment category for further soil, cement and concrete apparatus.
Frequently Asked Questions
What soils is the Constant Head permeability apparatus suitable for?
The Constant Head permeability apparatus (SLE/CE/59) is suited to relatively coarse-grained soils such as sands and gravel, with a maximum particle size of 10 mm. For fine-grained clay-like or silty soils, the Falling head permeability apparatus is recommended.
What cell sizes are available for the Constant Head permeability apparatus?
The Constant Head permeability apparatus is available with 75 mm and 114 mm nominal cell diameters. The Perspex cell is mounted on a detachable aluminium base and head, so it can be dismantled for filling and cleaning.
What permeability range does the Constant Head permeability apparatus cover?
The listed recommended range for the Constant Head permeability apparatus is a coefficient of permeability of 10-3 to 10-7 cm/s. Because the constant head method suits free-draining soils, describe your soil to us so the right cell and method can be confirmed.
Are the manometer stand and constant level tank included?
The Constant Head permeability apparatus has pressure points that must be connected to a manometer stand and a constant level tank. Whether these form part of your supply should be confirmed in the quotation, so mention them when you enquire through the contact page.
Who manufactures the Constant Head permeability apparatus?
Jain Scientific Equipments Pvt Ltd (ScienceLab) is the OEM manufacturer of the Constant Head permeability apparatus, producing it at its own licensed factory at Saha, Ambala, Haryana, India, and supplying buyers in India and international markets directly.
Request a Quote
For a Constant Head permeability apparatus quotation, state the cell size and any manometer stand or tank required via the contact page, or add it to the enquiry cart. Quotes come straight from the manufacturer.
Last updated: 24 September 2026
