3M™ E-A-Rfit™ User Support
The 3M™ E-A-Rfit™ Validation System allows you to identify the amount of protection that a worker is receiving from their hearing protector. The purpose of this information is to provide training and software resources for users of the system. See Getting Started
List of Test Plugs for North America (PDF 129KB)
User Support Resources
In order to use the 3M™ E-A-Rfit™ Validation System to measure hearing protector attenuation, you will need to:
- Purchase a 3M™ E-A-Rfit™ Kit model 393-1000 from your 3M distributor. This kit includes the E-A- Rfit hardware and accessories you need to get started along with a sample of probed test earplugs. Once you begin using the system, you will need to purchase additional probed test earplugs for use during testing.
- Download the current version of the 3M™ E-A-Rfit™ Software and the installation guide using the links in the Installation Guide & Software Downloads section.
- 3M Technician Code Request.
There are currently no announcements.
Reprint of an invited peer-reviewed paper, from a 2011 special issue of Noise & Health, that examines and validates the technology behind F-MIRE measurements of hearing protector attenuation. Click here to access the entire Noise & Health issue.
Reprint of a peer-reviewed paper, from the December 2014 issue of Workplace Health & Safety, that reports the results of field research using the 3M™ E-A-Rfit™ Validation system. Click here to access the Workplace Health & Safety issue.
Contact Us. Most messages are answered within two business days or less; however, some replies require further investigation or clarification.
If you need technical assistance by telephone, please call 1-800-243-4630 then select menu options 1-2-5.
Trompette, N., & Kusy, A. (2013). Suitability of commercially available systems for individual fit tests of hearing protectors. InterNoise, Innsbruck, Austria. (PDF 2.1MB)
Voix, J., Pienkowski, J., & Delnavaz, A. (2014). Performance of 3M™ E-A-Rfit™ Validation System. University of Quebec, ETS Laboratoire d'acoustique industrielle , Montreal. (PDF 5.9MB)