ABB EL3060 Series Operating Instruction page 76

76
Test gases
Analyzer
Magnos28
Magnos28 with suppressed
measuring range
Magnos28 with single-point
calibration
Magnos28 with substitute
gas calibration
EL3060 CONTINUOUS GAS ANALYZERS
Test gas for zero-point calibration
and single-point calibration
Oxygen-free process gas
Test gas with O concentration near
2
the starting point of the measuring
range
Test gas with O concentration in an
2
existing measuring range or ambient
air. Same moisture content as pro-
cess gas.
Oxygen-free process gas or substi-
tute gas (O in N )
2 2
CAUTION
In order to avoid accumulations of explosive gas mixtures, do not use air as
a test gas for single-point calibration when measuring flammable gases!
Dew point
The dew point of the test gases must be approximately the same as the dew
point of the sample gas.
| OI/EL3060-EN REV. A
Test gas for end-point calibration
Process gas with known O
tration
Test gas with O concentration near
2
the end point of the measuring range
–
Substitute gas, e.g. dried air
concen-
2