Portable Lumber Grader
Structural lumber strength classes are determined by the EN-338 norm. The Portable Lumber Grader is designed to grade lumber according to the above norm, that handles two different species classes: deciduous and coniferous including poplar. Grading is based on the modulus of elasticity (MOE) and the average specific gravity of the lumber. The Portable Lumber Grader system determines the MOE and specific gravity as quickly as possible (1 second/lumber).
Usage Instruction
- Load weighing scale.
- Hit the end of the lumber by a hammer.
- The results appear on the screen and, at the same time, also played as a voice message.
Feature
- Weighing scale
- Scale display unit
- Tape measure
- Steel hammer (100 g)
- Battery and charger
- Microphone
- USB to serial converter cable
- Portable Lumber Grader Software
- User's manual
Spesification
Weighing scale
Dimensions 250 x 75 x 90 mm
Capacity 30-500 kg
Resolution 10 g
Output RS232 signal
Power supply 12 V adapter or 4 AA size batteries
Microphone
Type Unidirectional
Sensitivity -56 dB (0 dB = 1 V/mbar at 1000 Hz)
Frequency range 100 - 15000 Hz
Operational temperature 5 - 40 °C
Hammer
Weight 0.1 – 3% of the lumber weight
Grading
Principle mass, CKDR and MOE determination
Time requirement ~1 s
Grading table identical to the EN-338 norm
Inquiry
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Testimoni
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