Extech SL400 Sound Level MeterExtech SL400 Sound Level Meter
Extech SL400 Sound Level Meter
Extech SL400 Sound Level Meter

Extech SL400 Personal Noise Dosimeter

Product Id : 272518

Extech SL400 Personal Noise Dosimeter is a compact, lightweight Dosimeter with a USB interface designed to test noise exposure and provide noise surveys for compliance with OSHA, MSHA, DOD, ACGIH, and ISO standards. 
Applications: Loudspeaker membranes, cars, railways, aircraft, industrial equipment, etc.

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Product Description

Extech SL400 Personal Noise Dosimeter Includes PC software to control setup and retrieve stored events or analyze real-time measurements. For employees who are exposed to loud noise, sound level monitoring is essential to determine what protective measures are required. Perform OSHA and IEC Noise accumulation surveys to determine total sound exposure over an 8-hour period.
Features of Extech SL400 Personal Noise Dosimeter:

  • Measures frequency weighted noise exposure and peak (C, Z) sound level
  • Data logs up to 999,999 readings when used as a sound level meter with sampling times between 1 second and 24 hours
  • Sound level mode: displays sound level, min/max, time-averaged sound level (Leq), peak, and sound exposure level (SEL)
  • Adjustable Criterion Level, Exchange Rate and Threshold
  • One user-defined measurement setup
  • Optional 94dB calibrator to perform “before” and “after” calibration checks per ANSI standards
  • USB interface with Windows®-compatible software to control setup and retrieve stored events or analyze real-time measurements
  • Complete with belt clip, clip-on 0.5″ (12.7mm) microphone with 32″ (81.3cm) cable and windscreen, 9V battery, software, USB cable, and carrying case

Additional Information

Weight 1 kg
Manufacturer Extech
Model SL400
Range 30 to 90 dB, 50 to 110dB; C, Z Peak: 70 to 140dB / C and Z Peak: 90 to 143dB
Accuracy ±1.4dB
Response Rate Fast, Slow, Impulse
Exchange Rate 3, 4, 5 or 6 dB
Measurement Duration 5, 10, 15, or 30 minutes; 1, 2, 4, 8, 10, 12, or 24 hours
Measurement Modes %Dose, Lxmax, Lxyp, Lxmin, Lxeq, SEL (LAE), PeakMAX, LAVG, TWA, LEP, LN% SPL, Lxmax, Lxyp, Lxmin, Lxeq, SEL (LAE) PeakMAX
Standards IEC61252-1993, IEC67672-1-2003, ANSI S1.25-1992, ANSI S1.4-1983, ANSI S1.43-1997
Frequency weighting A, C, Z
Bandwidth 20Hz to 8kHz
Memory Dose: 10,000 points/SLM: 999,999 points
Threshold Level 30 to 140dB in 0.1dB steps
Dimensions 107 x 65 x 33mm
Weight 198 Grams

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