MNL000423.doc
Revision 01
09/18/2018
© Versum Materials, Inc. as of the revision and date shown. All rights reserved.
Confidential and Proprietary Data
Page
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1
Chapter
5
System Operation
5.1
System Overview
The basic function of the VaporGuard® is to provide a consistently accurate supply of
source chemical with precise temperature control.
The temperature of the bubbler is maintained by a microprocessor control system. The
control system incorporates thermo-electric coolers (TEC) and a heating element. Both
cooling and heating modes are controlled by the microprocessor and adjusted
appropriately through a factory set Proportional-Integral-Derivative (PID) loop.
VaporGuard® has been designed to minimize the destabilizing effect of evaporative
cooling over a broad range of carrier flows.
The system is designed in two separate components, the Power Supply Module and the
Source Cup Assembly. The heart of each module is their respective microprocessors.