er-75

ER-75

Validate your audiometric equipment

When conducting an audiometry test it is essential to ensure the accuracy of your instrument. Our ER-75 electro-acoustic ear simulator is the perfect solution for performing objective validation of your audiometer and audiometric equipment, ensuring optimum performance when testing for hearing loss.

Validations produce repeatable thresholds over the frequency range of 0.25kHz to 8kHz, thereby simulating the patient response for a normal hearing loss. The ER-75 is ideal for use within an occupational health accreditation scheme.


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Fast and accurate validation

The ER-75 is battery powered, lightweight and compact, and weighs just 500g, making it suitable for both desktop and mobile. Instrument validation can be completed in under 5 minutes, allowing you to identify if your audiometer calibration values are correct or off-set on a daily basis. If an instrument requires calibration, this can be conducted immediately, ensuring audiometry records created through-out the day are accurate and reliable. 

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Key features

•   Automatic audiometer validation in under five minutes
•   Repeatable thresholds over 250 - 8000Hz range
•   Lightweight and compact design
•   Battery powered for mobile use.
 

Included

•   Instrument connection lead
•   AA batteries (2).

Fast and efficient validation

If an instrument requires calibration, this can be conducted immediately, ensuring audiometry records created through-out the day are accurate and reliable. Instrument validation can be completed in under five minutes, allowing you to identify if your audiometer calibration values are correct or off-set on a daily basis.

Frequently asked questions

  • What is an electro-acoustic ear simulator?

    As its name already suggests, this device uses electrical inputs to simulate an acoustic environment. In this case it is simulating an ear, to perform hearing tests on.

    What is the recommended usage of an ear simulator?

    We are Amplivox recommend to perform a audiometer calibration validation every morning before starting into your daily routine. 

  • What is the benefit of using an electro-acoustic ear simulator?

    The device is simulating a normal air conduction hearing threshold in dBHL. When connected to your audiometer, an automated test can be conducted, testing this stimulated normal hearing threshold.

    If your audiometer succeeds identifying the normal hearing simulation, you audiometer calibration is validated as correctly. If the measured hearing test is off and not according to a normal pure-tone audiogram, you are advised to check your audiometers calibration.