Oxygen Sensor: Preparation For Installation - ABB AO2000 Series Operating Instructions Manual

Oxygen sensor: Preparation for installation

Installation site
Sample gas
AO2000 CONTINUOUS GAS ANALYZERS
Ambient temperature
During operation with the oxygen sensor installed
+5 to +35 °C in a wall-mount housing
+5 to +40 °C in a 19-inch housing
NOTE
The oxygen sensor is always assigned to an analyzer module and must be
installed in the same housing as this analyzer module.
ATTENTION
The gas analyzer may not be used for the measurement of ignitable
gas/air or gas/oxygen mixtures.
Sample gas inlet conditions
Temperature The dew point of the sample gas must be at least 5 °C
lower than the lowest ambient temperature in the overall
sample gas path. Otherwise, a sample gas cooler or con-
densate trap is required.
Inlet pressure p = 2 to 500 hPa
e
Flow 20 to 100 l/h
Remark: Sample gas temperature, pressure and flow rate should be main-
tained constant to such a degree that the fluctuation influence on the accu-
racy of measurement is acceptable (see also chapter "Analyzer module oper-
ating data" (see page 346)).
Moisture content
H O dew point ≥ 2 °C. The oxygen sensor may not be used with dry sample
2
gases.
Associated gases
The oxygen sensor may not be used if the associated gas contains the fol-
lowing components: H S, compounds containing chlorine or fluorine, heavy
2
metals, aerosols, mercaptans, alkaline components.
Flammable gases
The oxygen sensor may not be used for the measurement of flammable
gases.
Sample gas outlet conditions
The outlet pressure must be the same as the atmospheric pressure.
| OI/AO2000-EN REV. B 71