RA500 Custom Audiometric Testing System

Tailor your hearing testing program to your exact requirements.

Count on Tremetrics' advanced RA500 microprocessor audiometer to streamline your hearing testing program.

A versatile, touch-sensitive alphanumeric keyboard allows the user to enter up to 25 customized test questions as well as company name and location, subject names, etc. The large, view-adjustable LCD screen lets you monitor complete test status as it occurs. In addition to setting up a complete custom audiometeric testing protocol, the unit will store up to 1200 audiograms, retrieve baselines from your computer and provide detailed audiogram records via a high quality graphics printer. A built-in talkover microphone, multi-level security system and dual RS232C interfaces are standard features.

Check the extra value features:

  • 1200 audiogram storage and disk backup capability
  • Proprietary "Notch Adjuster" software analyzes responses so successive tone presentation aren't uncomfortably loud
  • Power line filter to protect audiometer from power fluctuations
  • Fast audiogram tagging for selective record transfer
  • Choice of OSHA, Canadian or other specific protocol criteria

View RA500 PDF

RA500 Audiometer Specifications

  • Equals or exceeds ANSI S3.6-1989.

  • Test frequencies: 500, 1000, 2000, 3000, 4000, 6000, 8000 Hz.

  • Frequency accuracy: Better than 1% crystal controlled.

  • Distortion: Total harmonic distortion below 40 dB (1%)

  • HL attenuator: Selectable from –10 dB to 100 dB in 5 dB steps.

  • HL accuracy: +/- 1 dB

  • Calibration: Non-volatile EEPROM memory provides for electronic calibration. Date displayed on screen and printed on each audiogram.

  • Rise/Fall time: Meets ANSI specifications.

  • Earphones: Telephonics TDH-39, 10 ohm earphones in Model 41 cushions.

  • Mechanical: High impact, GE Noryl¨ U.L. approved plastic housing, "touch sensitive" panel with adjustable super-twist LCD.

  • Physical: 17 1Ú2" W, 12 1Ú4" D, 4" H, weight 9 1Ú2 lbs.

  • Power: 120 VAC +/- 10%, 60Hz, 30 Watts; 240 VAC, +/- 10%, 50 Hz, 30 Watts (user selectable)

  • Computer interface: Two RS232C ports.

  • Data output: 3000-19200 baud, selectable.

  • Printer: High speed graphics printer, avg. 6-8 seconds/audiogram.

  • Clock: Real-time, battery backed.
    Copyright © 2005 Coll Health and Safety Inc.