Noise Dosimeters

Noise Dosimeters quantify the noise dose experienced by a worker(s) in excess of a specified threshold level. These measurements are used to demonstrate compliance with OSHA or MSHA worker protection regulations, and to establish work areas or tasks that require workers to use hearing protection - typically ear plugs or ear muffs. The modern noise dosimeters digitally record raw sound pressure measurements which are then processed by the instrument to display on a real time basis the current dBa reading as well as the accumulated dose and time weighted average. The raw noise data are downloaded to PCs for record keeping and further analysis.


Noise dosimeters are normally purchased in sets - one or more dosimeters with windscreens, an acoustical calibrator (typically type 2), analysis and data management software and case.

Casella Noise Dosimeters

• CEL-350 dBadge Micro Noise Dosimeter
• CEL-320 Noise Dosimeter
• CEL-360 Data Logging Noise Dosimeter