ABB AO2000 Series User Manual

AO2000 CONTINUOUS GAS ANALYZERS | OI/AO2000-EN REV. B 55
Flammable, corrosive or toxic gases
Depending on which sample cell has been installed in the analyzer module,
the following application restrictions and notes must be observed:
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 com-
pounds
Fluorine compounds Wet gases containing chlo-
rine, H
2
SO
4
, SO
3
, fluorine
compounds
Toxic gases Housing purge
3)
with
sample component-free air
or with N
2
Housing purge
3)
with
sample component-free air
or with N
2
Sample cell purge
1)
with N
2
or with sample compo-
nent-free air under nega-
tive pressure and flow
monitoring; additional
monitoring for sample gas
traces possible
Corrosive gases PTFE gas lines, housing
purge
3)
with sample com-
ponent-free air or with N
2
Housing purge
3)
with
sample component-free air
or with N
2
Sample cell purge
1)
with N
2
or with sample compo-
nent-free air under positive
pressure
2)
with flow mon-
itoring
Flammable gases
4)
Gas lines of stainless steel,
housing purge
3)
with N
2
Housing purge
3)
with N
2
Sample cell purge
1)
with N
2
1) "Purge curtain"
2) p
e
= 7 to 20 hPa, 15 to 20 l/h
3) ≤ 20 l/h
4) See the following section for further information
Flammable gases
The analyzer module is suitable for the measurement of flammable gases
and vapors under atmospheric conditions (p
abs
≤ 1.1 bar, oxygen content
≤ 21 vol.%). Temperature class: T4.
The sample gas may not be potentially explosive in normal operation; if it is
potentially explosive in the event of faults in the sample gas supply, then
only rarely and for a short time (corresponding to Zone 2).
Pressure in the sample gas feed path in normal operation p
e
≤ 100 hPa; in the
event of faults in the sample gas supply, the pressure may not exceed the
maximum value of p
e
= 500 hPa.
For the measurement of flammable gases and vapors, the version with in-
ternal gas lines made of stainless steel should be selected and a housing
purge with nitrogen provided.
Prior to using the analyzer module, the corrosion resistance against the
sample gas must be tested.

ABB AO2000 Series Specifications

General

Brand	ABB
Model	AO2000 Series
Category	Measuring Instruments
Language	English