ENVIRO 500

ALEXANDER DENNIS INC. Pdf Download PDF Report

Exterior Noise Test

Stationary

Date : 2008-03-06
Personnel : SC and ED
Temperature (°F) : 41 Humidity (%) : 53
Wind Speed (mph) : 4 Wind Direction : ssw
Barometric Pressure (in.Hg) : 30.15
Verify that microphone height is 4 feet, wind speed is less than 12 mpg and ambient temperature is between 30 F and 90 F: true checked by SC
Initial Sound Level Meter Calibration: true checked by SC
Exterior Ambient Noise Level dB(A): 43.8

Accessories and Air Conditioning ON
Throttle Position Engine RPM Curb (Right) Side dB(A) Street (Left) Side dB(A)
Measured Measured
Low Idle 668 64.8 65.0
High Idle 1200 69.3 69.9
Wide Open Throttle 2107 79.0 77.8

Accessories and Air Conditioning OFF
Throttle Position Engine RPM Curb (Right) Side dB(A) Street (Left) Side dB(A)
Measured Measured
Low Idle 676 66.5 65.2
High Idle 1202 69.8 70.6
Wide Open Throttle 2101 79.3 78.6