UGT IL-2700, Руководство пользователя, Страница: 31 / 32

Umwelt-Geräte-Technik GmbH | Eberswalder Str. 58 | D-15374 Müncheberg | Tel.: +49 (0) 33 43 2 - 89 575 | www.ugt-online.de Page 31 of 32
11. Notes
When using the Hood Infiltrometer IL- 2700, attention must be paid to the following:
Hoodinfiltrometer:

Before starting the experiment make sure that the reservoirs and connections are in-
tact.

Bring the apparatus in a level position. Align the scales against each other.

Moisten the quartz sand and press it gently. Add more sand while filling.

When filling, press gently on the hood.

Remember that ca. one column full of water will be required to fill the hood.

The hood must never be filled to the top. Mind the mark on the hood. By no means let
any water get into hoses [9] and [10]. If necessary, use the spare tube. No “complete”
drops must come up except for small droplets on the capillary wall.

Before starting the experiment, check the correct position of the valves. Only [V 1]
must be open.

Delete the data memory by pressing "ON" and "START".

To fill the hood, insert the air intake pipe into the bubble tower. Set the depth of sub-
mergence ca. 2 cm higher than the chamber height Hk. Until aeration, i.e. until the
beginning of infiltration, no bubbles must turn up in the infiltration reservoir [5]. Oth-
erwise do not forget to check that the system is tight.

Keep an eye on the water table of Us and Hs. Unless that level remains constant
throughout the test, air will enter through hose [9] or through the connected system.

Steady-state infiltration will be reached asymptotically and in dependence on the kind
of soil involved. As a guiding figure, a quasi steady-state value will have been reached
after infiltration of half a column of water.

Before setting another hydraulic pressure head by means of air intake pipe [7], fill up
the infiltration reservoir. In case this is necessary in the course of an infiltration meas-
urement, shut [V1] when filling.
Micrologger IL-2700:

Check the charge of the battery in the logger

Remove the batterys from the logger for longer measuring breaks

Avoid any tensile load on the data cable!