Extech SL355
Noise Dosimeter

  • Low cost, lightweight, easy to use, personal noise dosimeter
  • Perform OSHA and IEC Noise accumulation surveys
  • Adjustable Criterion Level, Exchange Rate, and Threshold
  • Optional 94/114dB calibrator to perform "before" and "after" calibration checks per ANSI standards
  • One user-defined measurement setup
  • Measures frequency weighted noise exposure and peak sound level simultaneously
  • One user-defined measurement setup
  • 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)
  • Stores up to 20 dosimeter surveys including Start/Stop Time, %Dose, %Dose projected for an 8 hour period, and peak level when used in the Dosimeter mode
  • UBS Interface. Includes Windows® compatible software to control setup and retrieve/analyze stored data.

Applications

  • Personal accumulated noise exposure measurement
  • Workplace noise assessment
  • OSHA and other regulatory agency compliances
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Extech SL355 Shown

Product Information
Datasheet 242 KB
Manual 1.13 MB
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The Extech SL355 Personal Noise Dosimeter measures frequency weighted noise exposure and peak sound level simultaneously. The SL355 Datalogs up to 12,000 readings when used as a sound level meter with sampling times between 1 sec and 1 hr. In sound level mode, the meter displays sound level, time-averaged sound level (Leq), peak, and sound exposure level (SEL). The Unit stores up to 20 dosimeter surveys including Start/Stop Time, %Dose, %Dose projected for an 8 hour period, and peak level when used in the Dosimeter mode. The USB interface is compatible with Windows® 95/98/NT/2000/ME/XP software to control setup and retrieve stored events or analyze real time measurements.
Specifications
Standards IEC6152, 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 - 130dB / 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 90 dB
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
Dimentions/Weight 3.8 x 2 x 1.4" (97 x 51 x 35mm) 4.2 oz. (120g) incl. batteries
Ordering Information
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Included Accessories
 
  • (1) Belt clip
  • (1) Clip-on microphone
  • (4) AAA batteries
  • (1) Mini screwdriver
  • (1) Carrying case
  • Software and cables
Included
Optional Accessories
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*NOTE: Items ordered with optional NIST calibration will require
approximately 10 days to complete the certification.