1. Introduction
Congratulations on the purchase of your CoreDry Unit. The
CoreDry is a new, innovative device used for rapid vacuum
drying of samples, while maintaining the sample at room
temperature. Keeping the sample cool during drying process
ensures that the characteristics of the sample have not
changed.
This product is the result of industry demand for rapid testing
results in the road paving industry in which previous drying
methods took many hours. Although the results are the same,
drying with rapid vacuum technology provides the user with
samples that can be tested in a few minutes. Now you can
use the dry weight from the CoreDry to measure your core
density in minutes or get a quick measure of your stockpile
aggregate moisture content.
The CoreDry uses high vacuum in conjunction with a
thermoelectric cold trap to first draw the water out from every
pore of a sample, quickly evaporate the drawn out water by
lowering the vapor pressure and then trap and condense the
vapor in a separate chamber. The vapor trap serves two
purposes in the system: first it prevents much of the vapor from
entering the pump which keeps the pump efficiency high and
secondly it improves the efficiency of the drying process by
increasing the vacuum of the system by causing condensation
to occur.
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