Specifications

About The Maxum II, Continued
The application modules for the Maxum II Modular Oven use the
Siemens Model 50 valve. The Model 50 is a 10-port diaphragm type
valve that is suitable for vapor samples. The Model 50 is operated solely
by air pressure against the diaphragm, with no moving parts. This unique
design allows for easy maintenance, a long operation life, and a very
compact size.
Switching and
Sample Valves
The Maxum II Modular Oven is equipped with thermal conductivity
detector beads built into the application modules. These thermistor
beads connect to an electronic Detector Personality Module (DPM) in the
Electronics Enclosure (EC).
Detectors
The TCD is a concentration response detector for moderate sensitivity of
most components. A double application module can be equipped with up
to 8 thermistor channels (6 for measurement and 2 for reference). A
single application module can be equipped with up to 4 thermistor
channels (3 for measurement and 1 for reference).
Simplicity of the application module and detector design allows the TCD
detector to be easily serviced. Maintenance is limited to replacement of
thermistor beads, which is easily accomplished by removing the
application module from the modular oven and inserting a new pair of
beads.
The Control Interface Module (CIM) consists of a touch screen display
and a controlling circuit board. The CIM displays all maintenance
functions and data in a menu driven graphical display. In addition, it
eliminates the need for strip-chart recorder because it can also display
both real-time and stored chromatograms. The real-time chromatograms
include zoom and pan features. The stored chromatograms include
voltages and cycle times for future comparison. All of the operational and
daily routine maintenance tasks of the GC can be performed using the
CIM interactive display screens and menus. System security is assured
with multiple levels of password protection for all analyzer-operating
functions. The touch screen function of the CIM is pressure activated. A
software emulator for the touch screen display (also called a Human
Machine Interface, or HMI, emulator) is available from the Maxum
System Manager Workstation software. This emulator allows a user to
perform CIM tasks without being located at the unit. Information on the
use of the CIM touch screen display is detailed in section 3 of this
manual and in the CIM User’s manual.
CIM Touch screen
Display Panel
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