Model 511 - Grain Angle Meter
From Grain Angle Meters
The Model 511 Grain Angle Meter measures grain angle in wood as the direction of maximum dielectric permittivity projected onto a flat surface of the wood relative to a reference direction. The Model 511 consist of a stationary detector, operating controls, digital display, and USB port integrated into a handlheld unit.
The detector causes radio frequency (RF) fields to be applied to the wood through defined areas on the wood surface, and senses the field at another area on the wood surface. The sensed signal is amplified and processed to determine grain angle.
Detection Principle Permittivity relationship to fiber orientation
Detector Implementation Noncontacting, stationary electrode array
Sensor Area Diameter 1.00 in (25 mm)
Probing Frequency 500 kHz
Max. Moisture Content In Wood Approximately 20%
Sensor to Wood Spacing Contact up to approximately 0.1 in (2.5 mm)
Attitude Restrictions None
Operating Temperature 41°F to 104°F (5°C to 40°C)
Operating Humidity Up to 90% Noncondensing
Power Four (4) AAA batteries or external USB supply (provided)
Dimensions Approximately 4 X 7.5 x 1.5 in (102 X 191 X 38 mm)
Weight Approximately 1 lb (0.45 kg)