Etymotic Research ER200 ER•200 Personal Noise Dosimeter

With the ER•200 Personal Noise Dosimeter, Etymotic Research takes away both the cost and complexity of noise dosimetry. FYI: Sound level meters measure at discrete times, while dosimeters continually measure over time for a more accurate risk estimate.

The dosimeter uses color-coded LEDs to display noise dose in percent.

What the LEDs Mean:

Lights (refer to image)

• Green (Safe): Noise dose is below 100%
• Yellow (Borderline): Noise dose is greater than 100% and less than 200%
• Red (High Risk): Noise dose is greater than 200%

Rate

A slow-flashing LED at 25% means that the noise dose is at or below 25% (i.e., between 0% and 25%). When the noise dose reaches 25%, the 25% LED flashes rapidly indicating that it is between 25% and 50%. Similarly, when the dose exceeds 50% but is less than 100%, the 50% LED flashes rapidly, etc.

Etymotic Research ER•200 Personal Noise Dosimeter Includes:

• ER•200 Personal Noise Dosimeter unit
• Interpretation chart
• Windscreens
• User manual
• Batteries: (3) AAAA Alkaline*
  • *Note: AAAA batteries are available at electronics retailers, at etymotic.com, or please contact your Sales Pro.

Etymotic Research ER•200 Personal Noise Dosimeter Features/Highlights:

• Color-coded LEDs indicate safe, borderline and high-risk exposures
• Uses NIOSH Criteria: 85 dB criterion, 3 dB exchange rate, 75 dB threshold
• 2 Modes of Operation
  • Quick Check
    • 2-minute test calculates dose per hour
    • Estimates potential risk of over-exposure (e.g., high-noise areas, power tools, concerts, sporting events)
  • Normal
  • Continuously measures noise up to 16 hours
  • Auto power-off after 16 hours

Etymotic Research ER•200 Personal Noise Dosimeter Specifications:

• Note: The default settings used by the ER-200 for calculation of noise dose are consistent with ANSI S1.25–1991 (R2002) Specification for Personal Noise Dosimeters.
• Calibration Accuracy: ± 2.5 dB
• Exchange Rate: 3 dB
• Criterion Level: 85 dB
• Threshold Level: 75 dB
• Run Length: 16 hours
• Frequency Weighting: A
• Response: Slow
• Temperature Range of Operation: 14° F to 113° F (-10° C to 45° C)
• Omni-directional Microphone: Flat from 100 Hz to 15 kHz
• Power Supply: (3) AAAA batteries
• RMS Detector: Dynamic range 60 dB (70 to 130 dB)
• Battery Life: > 250 hours continuous use