5.2.3 Single point calibration
Attention! Incorrect zero point calibration is a
f requent source for measurement error. For correct
calibration, we recommend the use of carbon
dioxide gas with a level of purity of at least
99.9995 % for measurements in CO
For all other applications we recommend to use ni-
trogen (N
hours
5.2.4 Dual point calibration
Important!
always start with the zero point calibration
) gas.
2
dual point calibration,
applications.
2
6 ... 12