25
Appendix D: Regulations Conversion from
"Percent Noise Exposure" or "DOSE" to "8-Hour
Time-Weighted Average Sound Level" (TWA)
Dose or
Percent
TWA (dBA)
Dose or
Percent
TWA (dBA)
10
73.4
70
87.4
15
76.3
75
87.9
20
78.4
80
88.4
25
80.0
85
88.8
30
81.3
90
89.2
35
82.4
95
89.6
40
83.4
100
90.0
45
84.2
105
90.4
50
85.0
110
90.7
55
85.7
115
91.1
60
86.3
120
91.3
65
86.9
125
91.6
Note:
5-dB exchange rate and 90-dBA Criterion
Product Care
To keep your instrument in good working order we recommend
the following:
• Store your product in a clean, dry place.
• Change the battery as needed.
• If your instrument isn't being used for a period of one month or longer
please remove the battery.
• Clean your product and accessories with biodegradable cleaner. Do not
spray the cleaner directly on the instrument. Use on external parts only.
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