Extech SL355 Specifications
Specifications subject to change without notice.
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5/18/12 - 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
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