Lumber moisture measurement apparatus which is less sensitive to

Details Lumber moisture measurement apparatus which is less sensitive to Lumber moisture measurement apparatus which is less sensitive to

1974-09-13

1976-05-25

Corbin, John K.

Electricity: measuring and testing

Conductor identification or location

Inaccessible

324 61QS, 324 61QL, G01R 2726

Patent

active

039597237

ABSTRACT:
Apparatus for measuring moisture in lumber and the like comprises a plurality of plates including at least one transmitting plate connected to a radio frequency generator, phase plates connected in circuit for providing an out of phase signal, and a receiver plate normally balanced to receive substantially zero signal input. Moist lumber next to the array of plates couples the radio frequency signal therealong and affects the balance of the system whereby the signal received at the receiver plate is in accordance with the moisture in the lumber.

REFERENCES:
patent: 2606310 (1952-08-01), Baker
patent: 2948850 (1960-08-01), Ederer
patent: 3009101 (1961-11-01), Locher
patent: 3450988 (1969-06-01), Breen et al.
patent: 3523243 (1970-08-01), Wagner
patent: 3523246 (1970-08-01), Hall et al.
Kartashova et al., "Contactless Measurements of the Thickness of Plane Dielectrics," Meas. Tech. (USA) Vol. 15, 7-1972, pp. 1025-1027.

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