The GDS Nold DeAerator™ (GDSND) is designed
for the rapid degassing/deairing of water by means of cavitation and
nucleation. This unit operates by violently agitating the liquid
while it is held under a vacuum. The agitation is produced by means
of an impeller coupled by a magnetic clutch to an electric motor.
Cavitation occurs behind the blades of the rapidly rotating impeller
causing the liquid to vaporize into a fine mist-like spray,
(nucleation). Gases released from this spray are hurled outwards by
centrifugal forces and bubble upwards into the evacuated space above
the liquid from where they are removed.
Download full
specification datasheet as
pdf
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What are its
uses
The GDSND can quickly (within 3 to 5 minutes) produce deaired water
with a purity of less than 1ppm dissolved air without the need for
application of heat.
Vacuums must exceed 29.5ins Hg (12Torr) for the GDSND to be
effective. Belt driven, two stage, oil filled vacuum pumps of
25litre per minute capacity are preferred. Where the water
aspirator is used, the water pressure must exceed 450kPa and
approximately 12litres of water is required.
GDS
Instruments is an ISO 9001:2000 credited company.
