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© 2012 UMS GmbH, Munich, Germany
Print #: KSAT12.12e
Subject to modifications and amendments without notice.
KSAT
and KSAT VIEW
are registered trademarks of UMS GmbH, Munich
®
®
Printed on paper from chlorine-free bleached pulp.
Tel. +49 (0) 89 / 12 66 52 - 0
Fax +49 (0) 89 / 12 66 52 - 20
Quick Guide
KSAT
UMS GmbH
Gmunder Str. 37
81379 Munich
ums@ums-muc.de
www.ums-muc.de
At a glance – how it works
The device measures the hydraulic conductivity, Ks, of saturated soil samples.
Measurements are based on the Darcy equation.
Darcy equation
Ks = (L . V) / (H . A . t)
L length of the sample
water
V percolated volume of water
H height of the water column
A area of the probe
t time
water column
height
soil sample
pressure sensor
Note: Key
Illustrations
water
electronics
air
soil
saturated soil
all other parts
Instructions
The
blue
column gives step-by-step
The
grey
column
instructions on how to work with this
shows the expected
device, e. g. „Put the sample ring on
results of your work.
the ring with porous plate."
water discharge
USB connection
to computer
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Related Manuals for UMS KSAT
Summary of Contents for UMS KSAT
- Page 1 Subject to modifications and amendments without notice. The device measures the hydraulic conductivity, Ks, of saturated soil samples. KSAT and KSAT VIEW are registered trademarks of UMS GmbH, Munich ® ® Measurements are based on the Darcy equation. Printed on paper from chlorine-free bleached pulp.
- Page 2 © For instable materials saturated soil samples in a UMS sample ring. The method is based on the crown German standards DIN 19683-9 and DIN 18130-1 and uses Darcy‘s equation. crown with...
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Page 3: Initial Operation
Connect the water supply and You are ready to measure! discharge hoses. Note For installing the KSAT VIEW software you may need administrator rights. Setting zero point Fill burette by opening the fill cock, then A water lense is visible. - Page 4 Measuring Saturating the soil sample Take the sample ring with the soil out of the transportation box. Take lids off and clean the sample ring. Put the sample ring on the ring with porous plate. Put both rings into the trough. Fill in 2 cm (1 in) of degassed water with similar ionic composition as the soil sample.
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Page 5: Preparing The Measurement
Preparing the measurement Open fill cock and fill burette. A water lense is visable. Close fill cock, open burette cock and flood the measuring dome. Close burette cock. Take the soil sample out of the trough and move it horizontally to the device. Put the sample slightly tilted on the water lense, to make sure air can escape. - Page 6 Measuring with falling head technique Fill burette with up to 5 cm (2 in) Measurement runs automatically. water column. Start measuring mode „Falling Head“ in the software. Open burette cock quickly. Note: How long measuring with falling head and constant head takes The ballpark duration is seconds to a few minutes for very conductive substrates like sand (~1000 cm/d or 400 in/d), whereas measuring substrates like unstructured clay with very low conductivity (<...
- Page 7 Measuring with constant head technique Fill burette with up to 20 cm (8 in) water column. Insert constant head: capillary bottom immersed into the water down to e. g. 5 cm (2 in). Select measuring mode „Constant Head“ in the software. Click here Enter water column levels you are going to read.
- Page 8 How to avoid trouble Set up and environment Wrong Right Shaky and tilted work table. Vibrations Stable, vibration-free work-table, adjusted influence the measuring results. with water level Cleaning the measuring dome Wrong Right Do not use a sharp tool to clean the measuring Use a soft brush dome.
- Page 9 Flow rates High flow rates erode the soil sample Keep the flow rates as low as possible. and lead to wrong measuring results. The scientific literature recommends Air bubbles outgassing from the sample an initial water column of 5 cm (2 in). reduce the conductivity.
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Page 10: Cleaning And Maintenance
Cleaning and maintenance Storage If you do not use the device for a longer period of time please discharge it completely. Dry all parts, to avoid algae growth or mold formation. Cleaning Clean all surfaces with a wet cloth. Make sure water does not dry out in the device.