Noise dosimetry is used to provide a measurement of average noise levels over the period of a work shift (usually 8-hours). A noise dosimeter is similar to a noise meter; however, the noise dosimeter will average the measurements to provide a TWA8 and dose% equivalent for direct comparision with MSHA standards.
The dosimeter (pictured on the right) must be set to the following parameters prior to collecting measurements for MSHA compliance.
- Exchange Rate - 5 dB
- Threshold - 80 dBA
- Criterion Level - 90 dBA
Download the Noise Dosimetry Field Data Form (pdf) for an example form that can be used in the field by the technician.