Etymotic ER•200DW8 Personal Noise Dosimeter with Data Logging - Manual (Page 20)

20
Specifications
The default settings used by the ER-200DW8 for calculation
of noise dose are consistent with ANSI S1.25–1991 (R2002)
Specification for Personal Noise Dosimeters and NIOSH
Criteria for a Recommended Standard (NIOSH, 1998).
Default settings are:
· Exchange rate: 3 dB
· Criterion level: 85 dB
· Threshold level: 75 dB
Run Length: 16 hours*
Calibration Accuracy: ± 2.5 dB
Frequency Weighting: A
Response
: Slow
Temperature Range of Operation:
-10°C to 45°C (14°F to 113°F)
Omni-directional Microphone:
Flat from 100 Hz to 15 kHz
Power Supply: Three AAAA batteries
RMS Detector: Dynamic range 60 dB (70 to 130 dB)
Battery Life: > 200 hours continuous use
*Note: to make an 8-hour measurement, the dosimeter should be set
to measure for 16 hours. This timeframe allows for an adequate time
window around the measurement and accommodates overtime and
swing-shift scheduling.
Flexibility in the dosimeter design allows programmable
control of dosimeter settings using the PC interface.
Choices include:
· Exchange rate: 3, 4 or 5 dB
· Criterion level: 70 to 95 dB, in 1-dB steps
· Threshold level: 70 to 90 dB, in 1-dB steps
· Measurement time (Run Length) in Normal Mode:
16 hours; 3 days; 5 days; 7 days