AO2000 CONTINUOUS GAS ANALYZERS | OI/AO2000-EN REV. B 39
Pressure sensor
In which analyzer modules is a pressure sensor installed?
Analyzer module Pressure sensor
Limas11 IR, Limas21 UV, Limas21 HW,
Caldos27, Uras26
installed ex works
Magnos206, Magnos28, Magnos27 installed ex works as an option
Caldos25, Fidas24, ZO23 not required
The information as to whether a pressure sensor has been installed in an
analyzer module can be found in the
MENU → Diagnosis/Information → System Overview
menu item after selecting the respective analyzer module.
Information on the connection of the pressure sensor can be found in the
"Gas connections" (see page 80) sections of the individual analyzer modules.
Information for the proper operation of the pressure sensor
The following information should be noted for the correct operation of the
pressure sensor:
• Prior to the commissioning of the analyzer module, the screw cap has to
be screwed out of the connectors of the pressure sensor.
• For a precise pressure correction the connection of the pressure sensor
and sample gas outlet have to be connected to each other via a T-piece
and short lines. The lines must be as short as possible or – in the case of
a greater length – have a sufficiently large internal diameter (≥ 10 mm)
so that the flow effect is minimized. If the pressure sensor connection is
not connected to the sample gas outlet, the pressure sensor and the
sample gas outlet must be on the same pressure level.
• If the pressure sensor is connected to the sample gas feed path, the
sample gas must not contain any corrosive, flammable or ignitable
components.
• Pressure sensor working range: p
abs
= 600 to 1250 hPa
NOTE
Further information on the subject of pressure correction can be found in
the sections "Air pressure correction" (see page 271) and "Air pressure value
correction" (see page 272).
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