![LiCONiC StoreX Series Скачать руководство пользователя страница 54](http://html1.mh-extra.com/html/liconic/storex-series/storex-series_operating-manual_1907204054.webp)
StoreX
Series
STX_V078.doc
53
CMa,
23.11.2009
6.4.9
Integrated StoreX Gassing Safety Features
There are a number of safety mechanisms implemented in the StoreX application
that protect the user from unwanted exposure to gases.. Even in the case of
failure or operation errors these mechanisms can ensure safe shut-off of the gas
inlet. The optimum arrangement should be selected according to the level of
accuracy, danger and specified settling time. The level of safety depends on the
type of gassing option.
The continuous flow system has a minimal of safety functions. The exhaust limits
gas leaking into the surrounding environment. A slight underpressure on the
exhaust will also lower uncontrolled gas flow into the surrounding environment.
The safety elements of the continuous flow system simply limit the gas flow and
protect against overpressure to some extent. This system may not be used in an
higher risk environment.
A significantly higher standard of safety is provided by the open loop.system. In
addition to the basic flow and pressure protection, the gas flow is by the system.
This results in a significantly higher level of safety and in a reduction of gas
consumption.
The above flowchart lists the steps that are implemented to avoid unwanted gas
emissions. As a first step the gas is always shut-off when the glass door is open.
This will eliminate the risk of large amounts of gas exiting when the user door is
opened. The same applies to the Gate. However, because of its smaller size
some gas flow is allowed even when the Gate is open. A Gate timeout is
implemented cutting gas flow when the Gate has been opened for an excessive
period of time. An additional general safety step is the gassing timeout. A gassing
timeout will occur when the solenoid is opened over a limited period of time.
An even greater level of safety can be achieved by the closed loopsystem. By
actually measuring and displaying the gas concentration possible errors or
malfunctions can be detected by the system. If the specified gas concentration is
not reached within a certain time limit the gas flow is shut-off and a error flag is
set. A display will inform the operator as to the correct operation of the system.
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com