10/24-4.10 EN Rev. 9 EasyLine EL3000 Series Data Sheet 5
Infrared photometer Uras26
Dynamic response
Warm-up time
Approx. 30 minutes without thermostat; approx. 2 hours with
thermostat
90% response time
T
90
= 2.5 sec for measurement cell length = 175 mm, sample
gas flow = 60 l/h and electronic T90 time (static/dynamic)
= 5 / 0 sec
Calibration
Zero-point calibration
With inert gas, e.g. N
2
, or with ambient air that is free of the
sample component.
End-point calibration
With gas-filled calibration cells (optional) or with test gas
mixtures. It is recommended to verify the calibration cell set
values once a year.
Materials in contact with the sample medium
Analyzer (sample cells)
Tubing: aluminum; windows: CaF
2
or BaF
2
; connectors:
stainless steel 1.4305 (SAE 303)
Gas lines and connectors
Gas lines: FPM hoses or PTFE tubes; connectors: stainless
steel 1.4305 (SAE 303); solenoid valve (option in model
EL3020): PVDF.
When flammable components are present in the sample gas:
Gas lines: stainless steel tubes 1.4571 (SAE 316Ti);
connectors: stainless steel 1.4305 (SAE 303).
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. Otherwise a
sample gas cooler or condensate trap is required.
Inlet pressure
p
e
= 2–500 hPa
Lower pressures require a sample gas pump and higher
pressures require a pressure reducer.
Outlet pressure
Atmospheric pressure
Flow rate
20–100 l/h
Corrosive gases
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.
Flammable gases
In the version with gas lines and connectors made of stainless
steel the analyzer is suitable for measuring flammable gases
in general purpose environment (see page 16).
Gas connec
tions
See page 20
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