Short Answer: Dew point measurement is necessary to ensure the moisture content of the cellulose insulation is low enough to safely energize the transformer (after filling with oil). Maximum acceptable moisture content varies with unit size/age, but less than 1% moisture content is generally acceptable.

if we know initial moisture content of the object we can identify how much drying energy required for dry the same moist material. if it is a food material we have to reduce the moisture content upto certain level, otherwise it may be destroyed. if we know the initial moisture content of same food object, we can reduce its moisture content upto 10% of its initial moisture content.

Step 1:weigh the cotton (before absorbing the moisture).

Step 2: Now weigh the cotton (after absorbing moisture)

Step 3: Subtracting results of Step 1 from Step 2.

This will be the measurement of moisture.

Raza Hasnain

The maximum bulking of sand is in 13% to 14% moisture content. It's likely to be 13.8% moisture content.

Robin P. Gardner has written:

'Density and moisture content measurements bynuclear methods' -- subject(s): Soil moisture, Soils, Density, Radioactive gages, Measurement