Determining the dielectric properties of wood

Details Determining the dielectric properties of wood Determining the dielectric properties of wood

2006-01-24

2006-01-24

Deb, Anjan K. (Department: 2858)

Electricity: measuring and testing

Impedance, admittance or other quantities representative of...

Lumped type parameters

C324S521000, C324S683000

Reexamination Certificate

active

06989678

ABSTRACT:
A wood drying installation for a wood drying kiln including a pair of electrodes adapted to be inserted into a wood stack contained in the kiln, a resistance connected in a series circuit with the electrodes, an AC voltage source connected to apply an AC voltage across the series circuit, a phase detecting circuit connected to the series circuit operable to generate a signal representing the phase angle between AC voltages applied to different parts of the series circuit, and a processor to receive the signal. The system is operable to determine a moisture value corresponding to a capacitive component of the reactive impedance between the electrodes in accordance with a predetermined arithmetic algorithm relating the value to the phase angle.

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James, W. L., Boone, R.S., Capacitive In-Kiln Wood Moisture Content Monitors, Wood Science, vol. 14, No. 4, Apr. 1982, pp. 146-154.

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