Particulate Systems HPVA Series, Руководство оператора, Страница: 11 / 124

HPVA Series Operator’s Manual Equipment Description
Mar 2011 1-3
To protect the user, the HPVA includes a hydrogen gas sensor to detect excessive levels of H2 gas
should a leak in the system occur. If tripped, the safety circuit places the HPVA unit in a safe condition
by removing power to the unit and closing all valves.
Analysis results are displayed real-time on the computer screen during an experiment and details can
be viewed and printed via a Microsoft
®
Excel macro provided with the application software.
The standard system consists of a vacuum pump and gauge, a gas manifold maintained at a constant
temperature (40 °C typically) with two pressure transducers, a sample chamber, an outgassing furnace
with PID controller, a temperature control vessel that can be connected to a constant temperature bath,
and two stainless steel sample holders with diaphragm shut-off valves. The following is a schematic of
the HPVA system. A system schematic can be viewed from within the application software and can be
used to manually control the valves if required.