Product Description; Humidity Measurement Procedure - TESTO 0636 Mode D'emploi

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3. Product description

3.
3.1 Overview
Overview
Contact plates
Handle
Connection cable
3.2 Humidity measurement
The non-destructive stray field measurement uses the
ability of water molecules to dampen and thus change
electromagnetic fields. The electric field penetrates the
material via the contact plates and creates a measuring
field with a depth of approx. 5 cm.
The following factors can influence the measurement result:
Factors
Measurement depth
Material surface
Material properties
Moisture distribution
Metals and electric fields
Product description
procedure
Ideal condition
Material thickness > 5 cm (> 2"). Caution: The upper
layers of the material influence the measurement result
more than the deeper layers.
As level as possible as contact plates should lay flat
against it.
As homogeneous as possible with no air pockets.
As even as possible.
None, if possible.