If the linear offset / gain field adjustment is not sufficient, non-linear adjustment is needed. If the adjustment requires improving temperature compensation (fine-tuning the C-parameters), contact helpdesk@vaisala.com.
If you want to measure something that does not have a ready-made concentration curve, a new curve can be defined using a field sample and laboratory results. A new curve can also be defined at Vaisala using laboratory methods. Contact helpdesk@vaisala.com.