The hydraulic conductivity kf is determined in order to determine the amount of water that a soil can transport at a given pressure gradient. The value depends on the soil type (pore size distribution) and the water saturation in the soil. The highest hydraulic conductivity is achieved when the soil is completely saturated with water. The permeameter is a laboratory device for automatically determining the hydraulic conductivity (kf value) of undisturbed water-saturated soil samples in accordance with DIN 19683-9. Laboratory measurements allow the kf value to be determined under defined boundary conditions, which enables a high repeatability rate for the tests and thus also a sound statistical evaluation of the parameters determined.

The Ketelsen permeameter has two lines, each with 12 sample holders, on which you can perform tests independently of each other. Both lines are equipped with a measuring head consisting of an ultrasonic sensor and a filling nozzle, which are used to determine the sample height and adjust the overflow of the soil samples.

The test is performed fully automatically after manual start-up by the user. Throughout the entire measurement period, the height of the water column on the samples is checked at specified intervals, the hydraulic conductivity kf is determined, and the test is automatically terminated.
The measured values are stored in the device as a csv file and can be sent automatically by email. Alternatively, you can also read out the measured values via the front panel using a USB stick.

• Permeameter
• 24 Soil sample ring adapter
• LAN cable
• Power cable