Operation Mobile Belt Loader Model 660
Operation Manual
CD397-Oper Operation - 3 - 33
All measurements were taken in an acoustic free field over a concrete surface using an Extech
brand SPL meter in the “A” Weighted Mode.
FigureOperation-3-2:Sound-EngineIdle-ConveyorDown-BeltStationary
FigureOperation-3-3:Sound-EngineMax-ConveyorDown-BeltMaxSpeed
Driver
71.5
660-28
BS EN 1915 - 4 Noise measurement methods
Belt Loader Stationary
Conveyor Down
Engine Idle
Belt Stationary
1 M from contour and 1.6 M above ground level
All measurements are "A" Weighted dB
69
6967 70 70 71 69
67
6970717272 68.5 68.5
Operator
71
Operator
70
BS EN 1915 - 4 Noise measurement methods
78.5 83.5 82.5 82 8182.5 81
77 8281 81 81 81 78.5
78
Driver
Operator
81
Belt Loader
Stationary
Conveyor Down
Engine Max RPM
Belt Max Speed
78.5
660-28
1 M from contour and 1.6 M above ground level
All measurements are "A" Weighted dB
Operator
80
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