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3M E-A-Rfit Dual-Ear User Support

3M™ E-A-Rfit™ Dual-Ear Validation System User Support

The purpose of this information is to provide training and software resources for users of the system.

Request a Demo

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.

Getting Started

In order to use the 3M™ E-A-Rfit™ Dual-Ear Validation System to measure hearing protector attenuation, you will need to:
1. 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.
2. 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

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 1800 024 464.

Customer Support

Technical Support Documents

3M™ E-A-Rfit™ Dual-Ear Validation User Manual (3.6 MB)
3M™ E-A-Rfit™ Validation System FAQs (247 KB)
The Field-MIRE Approach to Measuring Hearing Protector Attenuation (2.7 MB)
Tips & Tools for Fitting and Using E-A-R™ Foam Earplugs (1.2 MB)
E-A-Rlog 5 Hearing Protector Performance (210 KB)
E-A-Rlog 20 The Naked Truth About NRRs (60 KB)
3M™ E-A-Rfit™ Validation System Global Product Crossover (128 KB)
Presentation of the Uncertainty/Variability Value in the 3M™ E-A-Rfit™ Validation System Software Ver 4.4 (35KB)
Noise & Health Issue

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.
Workplace Health & Safety 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.
Why and How to Conduct Hearing Protector Fit Testing (590 KB)
Summary of 3M™ E-A-fit™ Field Research (385 KB)

Calibration & Repair of 3M™ E-A-Rfit™ Systems

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 contact1-800-328-1667.

Outside US Customers:
Please contact your local 3M Technical Service person to coordinate the service or repair.

Third-Party Validation & User Support

Dyrba, P., Dantscher, S., Augustin, S., Fritsch, T., Sickert, P. (2014). Comparison of different measurement systems for the assessment of the individual noise attenuation of earplugs. Lärmbekämpfung 9(6) – November. (2.5 MB)