6-32 824 Reference Manual 11/8/00
•Dose
• Projected dose
• Time Weighted Average
• Sound Exposure Level
• Elapsed Time
The
Exposure-a
display is shown below:
The following explains each of the display’s components:
Display label -
This shows the current display (for example,
“
SLM Exposure-a
”).
Dose
- By definition, a person receives 100% dose when
exposed to a noise having a TWA equal to the selected crite-
rion level for a time equal to the criterion time (usually eight
hours). This corresponds to the maximum safe noise expo-
sure. Exposures at higher levels will result in a 100% dose in
less time; or if exposure continues, the exposure will exceed
100% dose.
Projected dose
- Projected dose is the dose that will occur if
current noise levels continue for the entire criterion time.
Time weighted average
- This display shows the Time
Weighted Average (TWA) measured in dB.
Sound exposure level
- This display shows the Sound
Exposure Level (SEL) measured in dB.
Display label
Sound exposure level
Time weighted average
Dose
Projected Dose
Elapsed Time
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