20 EL3000 CONTINUOUS GAS ANALYZERS | CI/EL3000-EN REV. B
Analyzer(s) Test gas for zero-point calibration
and single-point calibration
Test gas for end-point calibration
Uras26 + Magnos27
(automatic calibration)
IR sample component-free test gas
with O
2
concentration in an existing
measuring range or ambient air. Same
moisture content as process gas.
Calibration cells or span gas*
Uras26 + Magnos27
(manual calibration)
Zero gas for Uras26, respectively
Magnos27, or IR sample compo-
nent-free test gas with O
2
concentra-
tion in an existing measuring range or
ambient air. Same moisture content
as process gas.
Span gas for all sample components
in the Uras26 and Magnos27
Uras26 + Caldos27
(automatic calibration, i.e.
Caldos27 with single-point
calibration)
IR sample component-free test gas
with a known and constant rTC value
(possibly also dried room air)
Calibration cells or span gas*
Uras26 + Caldos27
(manual calibration)
Zero gas for Uras26, respectively Cal-
dos27, or IR sample component-free
test gas with a known rTC value
Span gas for all sample components
in the Uras26 and Caldos27 (possibly
only for the Uras26 if a single-point
calibration is carried out for the
Caldos27)
Uras26 + oxygen sensor
(automatic calibration)
IR sample component-free test gas
with O
2
concentration in an existing
measuring range or ambient air. Same
moisture content as process gas.
Calibration cells or span gas*
Uras26 + oxygen sensor
(manual calibration)
IR sample component-free test gas
with O
2
concentration in an existing
measuring range or ambient air. Same
moisture content as process gas.
Span gas for all sample components
in the Uras26
* Test gas mixture for multiple sample components possible if no
cross-sensitivity is present
Dew point
The dew point of the test gases must be approximately the same as the dew
point of the sample gas.
NOTE
The notes for calibrating must be considered.
Pressure sensor
The pressure sensor is installed in the gas analyzer ex works. Depending on
the version of the gas analyzer it is internally connected as follows:
Internal gas lines made as hoses:
Pressure sensor in the outlet of sample cell 1 with one sample cell
and with separate gas feed paths,
Pressure sensor in the outlet of sample cell 2 with two sample cells
in series..
Internal gas lines made as stainless steel pipes:
Pressure sensor connected to a connection port via an FPM tube.
Gas connections
see sections
"Gas connections Uras26 (Model EL3020)" (see page 47) and
"Gas connections Uras26 (Model EL3040)" (see page 49)