Campbell CS650 Manuál s instrukcemi stáhnout pdf (Strana 39)

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

, using

wet dry

dry

m m

−

To obtain soil bulk density, use

bulk

dry

cylinder

volume

Volumetric water content is calculated using

θ ρ

v g bulk

1 2 ... 34 35 36 37 38 39 40 41 42 43 44 ... 57 58

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Campbell CS650 Manuál s instrukcemi Strana 39