At first glance this may be considered a problem or, at least something to be compensated for.  Both ST-2200 and ST-3300 are equipped with temperature compensation inputs.  In practice, in an on-line application, process conditions tend not to vary too significantly at any fixed point in the process. 

Gypsum Board Dry End Transfer Moisture Control

Locating an ST-3300 Open Frame sensor at the dry-end transfer provides a cross board moisture profile of gypsum board. This is an alternative method of measuring the moisture profile.