Typical A-Weighted Sound Levels - Extech Instruments 407730 User Manual

Typical A-Weighted Sound Levels

50HP Siren (100')
Jet takeoff (200')
Riveting machine
Subway (20')
Pneumatic drill (50')
Vacuum cleaner (10')
Large store
Small office
Night residential area
Whisper (5'0)
Threshold of hearing
Technical support: Extension 200; E-mail: support@extech.com
Repair & Returns: Extension 210; E-mail: repair@extech.com
Product specifications subject to change without notice
For the latest version of this User's Guide, Software updates, and other
up-to-the-minute product information, visit our website: www.extech.com
Copyright © 2004 Extech Instruments Corporation
All rights reserved including the right of reproduction in whole or in part in any form.
dBA
140
130
120
110
Chain saw
100
90
Boiler room
80
Freight train (100')
70
Speech (1')
60
Large Office
50
Residence
40
30
Sound studio
20
10
0
Support line (781) 890-7440
6 Model 407730 Version 1.3 June 2004