A-1-4 Appendix 1: Gas Analyzer Overview 42/24-10 EN Rev. 9
System Housing
Versions The system housing is available as a 19-inch housing or a wall-mount housing
with IP 20 or IP 54 housing protection.
IP 65 protection is in effect if no power supply and no display and control unit is
installed in the system housing (e.g. if two analyzer modules are installed together
in one system housing).
Housing Purge Housing Purge is possible in system housings with IP 54 protection (with
connection box) or IP 65 protection (without power supply).
The purge gas connection ports (1/8-NPT internal threads) are factory installed per
order. The electrical cable connection openings are either threaded connections
or conduits.
The housing is generally purged via the analyzer module purge gas ports.
Separate purge gas ports are installed to purge a central unit that has no analyzer
module installed.
Display and Control Unit
Display and Control
Unit Components
The display and control unit contains:
• A back-lit graphics screen (320x240-pixel resolution)
• Three status indication LED’s
• A keypad with six softkeys, two cancel keys and a numeric keypad
Readout Values Readout values from the analyzer modules, as well as from other sensors (e.g.
flow, pressure and temperature), are displayed as:
• Numeric values with the applicable physical units
• A horizontal bar graph
Values from up to six sample components can be displayed simultaneously.
User Interface A menu-driven user interface allows the operator to use, initialize and configure
the gas analyzer.
Menus, values and operator prompts appear on the display.
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