Campbell CS650 Manual de instrucciones Pagina 39

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CS650 and CS655 Water Content Reflectometers
To obtain m
wet
, subtract the cylinder empty mass and the container empty mass
from the mass of the soil filled cylinder in the tray. Remove all the soil from
the cylinder and place this soil in the tray. Dry the samples using oven or
microwave methods as described above.
To obtain m
dry
, weigh the tray containing the soil after drying. Subtract tray
mass for m
dry
. Calculate gravimetric water content, θ
g
, using
θ
g
wet dry
dry
m m
m
=
To obtain soil bulk density, use
ρ
bulk
dry
cylinder
m
volume
=
Volumetric water content is calculated using
θ
θ ρ
v g bulk
=
*
29
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