AO2000 CONTINUOUS GAS ANALYZERS | OI/AO2000-EN REV. B 65
Uras26: Preparation for installation
Installation site
Ambient temperature
During operation with analyzer module installed in a system housing
+5 to +45 °C without electronics module
+5 to +40 °C with electronics module or with power supply only
Vibrations/shocks
max. ±0.04 mm at 5 to 55 Hz, 0.5 g at 55 to 150 Hz; slight transient effect on
measured value in the region of the beam modulation frequency
Sample gas
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.
Pressure The analyzer module is operated under atmospheric pres-
sure; the sample gas outlet is open to atmosphere. Inter-
nal pressure drop < 5 hPa with standard flow rate 60 l/h.
Permissible absolute pressure range: 800 to 1250 hPa.
Operation under lower absolute pressure (e.g. at altitudes
above 2000 m) on request. Overpressure in the sample cell
max. 500 hPa.
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)).
Corrosive gases
Highly corrosive associated gas components such as chlorine (Cl
2
or hydro-
gen chlorides (e.g. wet HCl) as well as gases or aerosols containing chlorine
must be cooled or pre-absorbed. A housing purge must be provided.
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 of the sample
gas must be tested.
To Next Page
Loading...
