Specifications subject to change without notice.
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www.extech.com 6/18/14 - R1
Low cost, lightweight, and easy to use
For measuring total sound exposure over an 8-hour period
Personal Noise Dosimeter
Features:
•Perform OSHA and IEC Noise accumulation surveys
•One user-defined measurement setup
•Adjustable Criterion Level, Exchange Rate, and Threshold
•Applications include Personal accumulated noise exposure
measurement, Workplace noise assessment, OSHA and
other regulatory agency compliances
•Measures frequency weighted noise exposure and peak sound
level simultaneously
•Datalogs up to 12,000 readings when used as a sound level
meter with sampling times between 1sec and 1hr
•In sound level mode, meter displays sound level, time-averaged
sound level (Leq), peak, and sound exposure level (SEL)
•Optional 94/114dB calibrator to perform “before” and
“after” calibration checks per ANSI standards
•Stores up to 20 dosimeter surveys.
Data includes Start/Stop Time, %Dose, %Dose projected for an
8 hour period, and peak level when used in the Dosimeter mode
•USB interface with Windows®XP/Vista/7 compatible software
to control setup and retrieve stored events or analyze real
time measurements
•Includes belt clip, clip-on 0.5" microphone with 2.6ft (0.8m)
cable, 3 AAA batteries, mini screwdriver, software, USB cable,
and carrying case
Ordering Information:
SL355 ..................Noise Dosimeter/Datalogger
SL355-NIST ........SL355 with Certificate of Calibration Traceable to NIST
407766 ................94/114dB Sound Level Calibrator
Specifications
Standards IEC61252 ,ANSI S1.25(1992) for dose and sound exposure meters
IEC 60651-1979 Type 2 for sound level meters
ANSI S1.4-1983 Type S (1) for sound level meters
Ranges 60 - 130 dB / 70 to 140dB (A/C Weighting)
60 to 130dB / 93 to 133dB (C or Z (Linear) Peak)
70 to 140dB / 103 to 143dB (C or Z (Linear) Peak)
Digital Display LCD 0.01-9999%
Criterion Level 80, 84, 85, or 90dB
Exchange Rate 3, 4, 5 or 6 dB
Threshold Level 70 to 90 (1dB steps)
High Level Detector/Peak Flag 115dB, 130dB and 140dB
Response Rate Fast or Slow
Measurement Duration 5, 10, 15, or 30 minutes
1, 2, 4, 8, 12, or 24 hours
Microphone 1/2 inch electret condenser with 31” cable
Battery Life >35 hrs
Event Storage 20 surveys
USB Interface yes
Real time clock/calendar yes
Dimensions/Weight: 3.8 x 2 x 1.4” (97 x 51 x 35mm) 4.2oz. (120g) incl.batteries
Includes 0.5" microphone with clip, secure front cover,
convenient belt clip, and software
