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3M™ E-A-Rfit™ Dual-Ear User Support
The purpose of this information is to provide training and software resources for users of the system.
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The 3M™ E-A-Rfit™ Dual-Ear Validation System allows you to identify the amount of protection that a worker is receiving from their hearing protector. For more information, see the Getting Started section below.
List of test plugs for North America (PDF, 129 KB)
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Getting Started
In order to use the 3M™ E-A-Rfit™ Dual-Ear Validation System to measure hearing protector attenuation, you will need to
- Purchase a 3M™ E-A-Rfit™ Dual-Ear Kit 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™ Dual-Ear Software in the Software & Training Resources section on this page.
Software & Training Resources
Technical Support Documents
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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.
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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.
Technical Support
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.
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Calibration & Repair of 3M™ E-A-Rfit™ Systems
3M™ E-A-Rfit™ Repair Service Guide (PDF, 28 KB)
US Customers:
If you wish to request service and/or repair of your 3M™ E-A-Rfit™ Equipment, please contact 3M Detection Calibration and Repair at 1-800-245-0779, ext. 5 to reach our Repair and Calibration Department.
Outside US Customers:
Please contact your local 3M Technical Service person to coordinate the service or repair.
