ABB EasyLine EL3000 Operating Instruction page 24

24 EL3000 CONTINUOUS GAS ANALYZERS | OI/EL3000-EN REV. D
... 4 Preparation for Installation
... Magnos206
Test gases – Magnos206
Analyzer
Magnos206
Magnos206 suppressed measuring range
Magnos206 with single-point calibration
Magnos206 with substitute gas calibration Oxygen-free process gas or substitute gas (O
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 Magnos206 – notes for calibration on page 130.
Test gas for zero point calibration and single-point
calibration
Oxygen-free process gas
• Zero point calibration: pure nitrogen or hydrogen-free
operating gas
• Single-point calibration: 100 Vol.-% O
with O concentration in the measuring range
2
Test gas with O concentration in an existing measuring
2
range or ambient air.
Test gas for the end-point calibration
Process gas with a known O
Test gas with O
measuring range
or test gas
2
—
in N ) Substitute gas, for example dried air
2 2
concentration
2
concentration near the end point of the
2