Product Overview
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