Rugged, micro-sized CEL-350 personal noise dosimeters combine power and simplicity and are also available with intrinsic safety approvals to permit use in hazardous areas. Perfect for all your personal noise dosimetry measurements, the CEL-350 features a single measurement range from 65 to 140 dB to cover all levels required by OSHA, ACGIH and various other regulatory compliance or best-practice protocols. Peak levels up to 144 dB are captured as well. The CEL-350 needs no user setup or advance configuration to meet all current noise dose requirements since 5dB and 3 dB exchange rates are captured at the same time in the same run. Virtually any combination of threshold and criterion level can be analyzed after the measurement using the powerful Casella Insight™ software to obtain the required TWA result.