SENTRY 1350-4565

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Exterior Noise Test

Accelerating from Standstill

Date : 1996-10-18
Personnel : S.C.
Temperature (°F) : 59 Humidity (%) : 73
Wind Speed (mph) : 7 Wind Direction : SE
Barometric Pressure (in.Hg) : 29.8
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 S.C.
Initial Sound Level Meter Calibration: true checked by S.C.
Exterior Ambient Noise Level dB(A): 57.2

Accelerating from Constant Speed
Curb (Right) Side
Accelerating from Constant Speed
Street (Left) Side
Run # Measured Noise Level dB(A) Run # Measured Noise Level dB(A)
1 80.5 1 82.1
2 81.1 2 81.3
3 81.2 3 81.7
4 80.3 4 81.8
5 80.7 5 81.0
Average of two highest actual noise levels = 81.2 dB(A) Average of two highest actual noise levels = 81.9 dB(A)