Delta-T SM150T User Manual
Also see for SM150T: Quick start guide
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Contents
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SM150T User Manual 1.0 Technical Reference 39DefinitionsVolumetric Soil Moisture Content is defined aswhere Vw is the volume of water contained in the sampleand Vs is the total volume of the soil sample.The preferred units for this ratio are m3.m-3, though %vol isfrequently used.Soil Moisture Content varies from approx. 0.02 m3.m-3 for sandysoils at the permanent wilting point, through approx. 0.4 m3.m-3 forclay soils at their field capacity, up to values as high as 0.85 m3.m-3in saturated peat soils.Gravimetric Soil Moisture Content is defined aswhere is the mass of water in the sample,and is the total mass of the dry sample.To convert from volumetric to gravimetric water content, use theequationwhere is the density of water (= 1g.cm-3),and is the bulk density of the sample (SSVM ).MWM SWSSWG MMg.g-1SWV VVSWVG |
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