Malvern Instruments DEG0003, Руководство пользователя

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Vacuum Degasser User manual
Vacuum Degasser Page 5
Introduction to the Degasser
The Vacuum Degasser is a high-efficiency in-line module that removes dissolved
gasses from solvents used in flowing systems, and more specifically from the
titrants used in the
MPT-2 Autotitrator . Its design assures reliable continuous
operation and the highest level of continuous performance available without the
need for helium degassing. Up to 3 titrant lines may be degassed simultaneously by
one unit.
Internally , the titrant flows through a short length of Teflon AF® tubing which
is located in a vacuum chamber. Within this chamber a partial vacuum is main-
tained by a constantly running, low RPM (revolutions per minute) vacuum pump.
„
Dissolved gasses migrate across the tubing wall under a concentration gradient
produced by the vacuum as the titrant flows within the coil.
„
Gasses removed are expelled, and the chamber is maintained at a constant, pre-
set vacuum level by varying the vacuum pump speed as needed.
An additional port in the vacuum pump continually flushes the pump head with a
small "bleed" of air to remove any titrant vapours which may enter the pump from
the vacuum chamber. This air bleed eliminates the need for any solenoid valves
within the system. This patented* design results in zero vacuum "hysteresis".
ill 7569
Computer
Zetasizer Nano
MPT-2 Autotitrator Vacuum Degasser
MAN0376-2.0 - Vacuum Degasser.book Page 5 Friday, January 12, 2007 2:49 PM