EL3000 CONTINUOUS GAS ANALYZERS | CI/EL3000-EN REV. B 25
Magnos28: Preparation for installation
Sample gas
Sample gas inlet conditions
The analyzer must not be used for measurement of ignitable gas/air or
gas/oxygen mixtures.
Temperature The sample gas dew point should be at least 5 °C below
the temperature throughout the sample gas path. Other-
wise a sample gas cooler or condensate trap is required.
Water vapor content variations cause volume errors.
Pressure Operation under atmospheric pressure: The sample gas
outlet is open to atmosphere. Internal pressure drop
< 5 hPa with standard flow rate 60 l/h. Permissible abso-
lute pressure range: 800 to 1250 hPa. Operation under
lower absolute pressure (e.g. at altitudes above 2000 m)
on request.
Operation under elevated pressure: A pressure sensor is
required for pressure influence compensation. Absolute
pressure ≤ 1250 hPa: An optional internal pressure sensor
can be connected to the sample gas path. Absolute pres-
sure ≥ 1250 hPa: An external pressure sensor must be
connected to the sample gas path. Correction is done
externally.
Flow 30 to 90 l/h
Changes in the sample gas flow rate should be avoided
when using highly suppressed measurement ranges.
Corrosive gases
Consultation with ABB Analytical is required if the sample gas contains Cl
2
,
HCl, HF or other corrosive components. FFKM75 seals must be used if the
sample gas contains NH
3
. In this case the integral gas feed cannot be con-
nected to the analyzer. The pressure sensor must not be connected to the
sample gas path.
Flammable gases
The analyzer is suitable for measuring flammable gases in general purpose
environment. The special requirements for the measurement of flammable
gases (see page 43) must be observed.
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