欢迎访问ic37.com |
会员登录 免费注册
发布采购

407768 参数 Datasheet PDF下载

407768图片预览
型号: 407768
PDF下载: 下载PDF文件 查看货源
内容描述: 数字声级计 [Digital Sound Level Meter]
分类和应用:
文件页数/大小: 7 页 / 85 K
品牌: EXTECH [ EXTECH INSTRUMENTS CORPORATION. ]
 浏览型号407768的Datasheet PDF文件第1页浏览型号407768的Datasheet PDF文件第2页浏览型号407768的Datasheet PDF文件第3页浏览型号407768的Datasheet PDF文件第4页浏览型号407768的Datasheet PDF文件第5页浏览型号407768的Datasheet PDF文件第6页  
Appendix  
Typical 'A' Weighted dB levels  
140  
120  
100  
50 HP Siren (100')  
130  
110  
Jet take-off (200')  
Riveting machine  
Chain saw  
Subway (20')  
90  
70  
Boiler room  
Pneumatic drill (50')  
Vacuum cleaner (10')  
Large store  
80  
60  
Freight train (100')  
Speech (1')  
Large Office  
Residence  
50  
30  
10  
Small office  
40  
Residential area  
(night)  
Sound studio  
Whisper (5')  
20  
0
Threshold of hearing  
Frequency Weighting Graph  
Frequency Weighting  
5
0
-5  
-10  
-15  
-20  
-25  
-30  
-35  
-40  
-45  
'A' Weighting  
'C' Weighting  
10  
100  
1000  
10000  
Frequency (Hz)  
7
407768 Version 2.0 06/06