Excessive workplace noise can harm worker hearing and reduce productivity. To manage this risk, safety professionals measure noise exposure using a personal noise dosimeter, an easy-to-use device that shows how much noise a worker is exposed to during a shift. This article explains how to use a noise dosimeter step by step to help improve workplace safety and hearing protection.
6 Steps to Use a Dosimeter
1. Quick pre-use check
- Make sure the microphone is firmly attached.
- Calibrate the dosimeter before use.
- Check the battery level to ensure it lasts for your shift.
2. Attach the dosimeter
- Clip it at shoulder level on outer clothing.
- Place the microphone 10–15 cm from the ear on the exposed side.
- Use the windscreen in windy areas to reduce interference.
3. Configure the settings
- Turn on the device and open the measurement menu.
- Set the key parameters:
- Weighting: A-weighting for general noise; C-weighting for peaks.
- Time response: “Slow” for most situations; “Fast” for quick changes.
- Exchange rate: 3 dB (NIOSH), 5 dB (OSHA); or match your regulation.
- Criterion level: 85 dB (NIOSH), 90 dB (OSHA); or match your regulation.
- Duration: Set your measurement period.
- Optional: Enable 1/1 or 1/3-octave band analysis or data/audio logging if needed.
4. Start the measurement
- Begin recording at the start of the shift.
- Let the dosimeter run for the full work period.
5. During the shift
- Keep the microphone clear of collars and obstructions.
- Note task changes to connect exposure with specific activities.
6. End the measurement
- Stop recording at the end of the shift.
- Save and review the data and audio logs.
- If exposure exceeds limits, take action: check hearing protection, adjust job rotation, or improve controls.
- Learn how to interpret noise exposure results.
- Recalibrate and recharge the device for the next use.
Improving Safety with Proper Noise Monitoring
Learning how to use a personal noise dosimeter helps ensure workplace noise is measured and managed correctly. At Scarlet Tech, we design precision instruments that make noise assessment reliable and efficient. Our ST-591 Noise Dosimeter is IEC 61252-1:2017 certified and includes audio recording with 1/3 octave band analysis for detailed, professional monitoring. Visit the ST-591 product page for full details.
Start creating a quieter, safer, and healthier work environment today with the right device and correct use.
About Scarlet Tech
Scarlet Tech provides professional-grade sound level meters and noise dosimeters that are accurate, reliable, and cost-effective. Our products are trusted in research labs, transport studies, residential assessments, and long-term outdoor monitoring. We help organizations meet compliance standards and protect workers through precise and easy-to-use noise monitoring solutions.
