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An objective, quantitative hearing protector fit-test system.
It is technology that takes Hearing Conservation to the next level. Environmental controls, hearing protectors, and on-the-job training are the first steps to protecting your workers against noise-induced hearing loss (NIHL).
2: Fit test your hearing products
The E-A-Rfit™ system assists in achieving optimal fit through hearing protector selection and employee training. In less than 8 seconds per ear, the system generates a personal attenuation rating (PAR) that indicates a worker’s noise reduction levels for a given fitting and hearing protector. Compare ratings across hearing protectors and fittings to determine best fit.
3: Get objective, personalised results
Researchers at E-A-RCal Laboratory developed proprietary algorithms to analyze sound pressure inside earcanals. This in-the-ear testing procedure differs from many other systems on the market by providing quantitative data that does not rely on subject response. Fit, train, and motivate every worker using their Personal Attenuation Rating (PAR).
In order to use the 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 E-A-Rfit™ software and the installation guide using the links on this page.
Contact 3M to obtain a Technician Code and password. Click here to create an e-mail request. Type "technician code request" in the subject field then fill in the form making sure to enter the serial number of your E-A-Rfit™ loudspeaker in the "Serial Number" field. You will receive a response in 24 hours.
3M is pleased to introduce a dynamic, new online training program to guide users of its E-A-Rfit™ Validation System through the process of system set-up, data entry, earplug attenuation testing, and reporting.
The training consists of 7 modules and you can view them and listen to them at your leisure.
For any questions or for more details of E-A-Rfit™ Validation, please contact us.
Please complete the form below to send us a message if you have questions, feedback,
or were unable to find an answer on our E-A-Rfit™ Support website.
If you are requesting a Technician code, type "technician code request" in the subject
field then fill in the form making sure to enter the serial number of your E-A-Rfit™
loudspeaker in the "Serial Number" field. You will receive a response in 24 hours.
* All fields are required.
Thank you for your interest in E-A-Rfit™ Validation. We will aim to respond to you within 24 hours.