Description Of Device - Felder NDI 20 Bedienungsanleitung

3 Description of device

3.1 Description of device
The FELDER NDI 20 moisture meter is designed for the
fast and flexible moisture measurement of wood products
(8 wood groups) and construction material (4 concrete
groups).
The NDI 20 is an electronical device with an integrated
humidity sensor.
The operating principle of the NDI 20 is based on the
relationship between dielectric constant of materials and
moisture content at a temperature above 0°C.
The instrument is equipped with calibration
curves for the materials mentioned below.
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