32
EL3000
CONTINUOUS GAS ANALYZERS | OI/EL3000-EN REV. D
… 4 Preparation for Installation
… Caldos27
Test gases – Caldos27
Analyzer
Test gas for zero point calibration and single-point
calibration
Test gas for the end-point calibration
Caldos27
Sample component-free test gas or process gas
Test gas or process gas with a known sample component
concentration
Caldos27
with a suppressed
measuring range
Test gas with a sample component concentration near
the starting point of the measuring range
Test gas with a sample component concentration near
the end point of the measuring range
Caldos27
with single-point calibration
Test gas with a known and constant rTC value (standard
gas; possibly also dried room air)
—
Ca Magnos28
(manual calibration)
In addition to the above mentioned test gases for Caldos27, additional test gases are needed to calibrate
Magnos28.
The requirements are provided in the table in
Ca Magnos28
(automatic calibration)
Same as manual calibration, with the following limitation:
Zero point and single point calibrations are performed
for all sample components simultaneously, since for thid
purpose, only one common digital output can be used for
valve control (unlike with end point calibration) for this
purpose (
Automatic calibration: settings
This results in limitations with regard to the possible test
gases, which in particular depend on the configuration of
the
• Measurement components
• Measuring ranges
• Gas paths (series or isolated)
Depending on these conditions, certain automatic
calibration methods cannot be performed in a practical
sense.
As in the case with manual calibration, a separate end
point gas valve must be available for each sample
component without a single point calibration, which is
controlled via a correspondingly configured digital
output (
Automatic calibration: settings
Dew point
The dew point of the test gases must be approximately equal to the dew point of the sample gas.
Note
The instructions for calibration must be observed, see
Caldos27 – Notes for calibration
