ABB Advance Optima magnos206 - Page 20

1-4 Chapter 1: Preparing the Installation 42/24-10 EN Rev. 9
Sample Gas Inlet and Outlet Conditions, continued
Flammable, Corrosive
or Toxic Gases
A housing purge is required if the sample gas contains flammable, corrosive or
toxic components (see “Housing Purge” section, page 3-5).
Please observe additionally the following application restrictions and notes:
Module Application Restrictions and Notes
Caldos27 If the sample gas contains Cl
2
, HCl, HF, SO
2
, NH
3
, H
2
S or other corrosive
components, operation of the analyzer is allowed only when the sample gas
composition has been taken into account during configuration at the factory.
Magnos206 If the sample gas contains Cl
2
, HCl, HF or other corrosive components, operation
of the analyzer is allowed only when the sample gas composition has been taken
into account during configuration at the factory.
Uras26 Highly corrosive associated gas components, e.g. chlorine (Cl
2
) and hydrogen
chloride (HCl), as well as gases or aerosols containing chlorine must be cooled or
undergo prior absorption.
Limas11 Standard Cell Quartz Cell Safety Cell
Suitable for
measurement of ...
Non-corrosive gases Corrosive gases,
e.g. wet Cl
2
, wet HCl,
H
2
SO
4
, SO
3
, ozone
Corrosive gases,
e.g. dry HCl, dry COCl
2
(< 50 ppm H
2
O)
Not suitable for
measurement of ...
Highly corrosive gases,
e.g. gases containing
chlorine, H
2
SO
4
, SO
3
,
fluorine compounds
Fluorine compounds Wet gases containing
chlorine, H
2
SO
4
, SO
3
,
fluorine compounds
Toxic Gases Housing purge (≤ 20 l/h)
with sample component-
free air or with N
2
Housing purge (≤ 20 l/h)
with sample component-
free air or with N
2
Cell purge
1)
with N
2
or
with sample component-
free air with negative
pressure and flow
monitoring; additional
monitoring for sample gas
traces possible
Corrosive Gases Housing purge (≤ 20 l/h)
with sample component-
free air or with N
2
,
PTFE gas lines
Housing purge (≤ 20 l/h)
with sample component-
free air or with N
2
Cell purge
1)
with N
2
or
with sample component-
free air with excess
pressure
2)
and flow
monitoring
Flammable Gases Housing purge (≤ 20 l/h)
with N
2
Housing purge (≤ 20 l/h)
with N
2
Cell purge
1)
with N
2
Zone 2
Flammable Gases
– – Cell purge with N
2
with
excess pressure
2)
and
flow monitoring
Oxygen Sensor H
2
O dew point ≥ 2 °C. The oxygen sensor should not be used with dry and with
flammable sample gas. It should not be used if the associated gas contains the
following components: H
2
S, chlorine or fluorine compounds, heavy metals,
aerosols, mercaptane, base components.
Gas Module Corrosive associated gas components and aerosols must be cooled or undergo
prior absorption. The gas module should not be used with flammable sample gas.
1) purge curtain
2) p
e
= 7 to 20 hPa, 15 to 20 l/h