Extech SL400 Personal Noise Dosimeter With USB Interface, 30 to 140 dB

Model # SL400

Key Features

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Measures frequency weighted noise exposure and peak (C, Z) sound level
Datalogs 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

StandardsIEC61252-1993, IEC67672-1-2003, ANSI S1.25-1992, ANSI S1.4-1983, ANSI S1.43-1997
Noise Ranges/Accuracy30 to 90 dB, 50 to 110dB: C, Z Peak: 70 to 140dB / C and Z Peak: 90 to 143dB (Accuracy: ±1.4dB@94dB 1kHz)
Response RateFast, Slow, Impulse
Bandwidth20Hz to 8kHz
Memory/ Dose10,000 points/SLM: 999,999 points
Criterion Level / Threshold Level30 to 140dBin 0.1dB steps / 30 to 140dBin 0.1dB steps
Measurement Duration5, 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
Dimensions4.2 x 2.6 x 1.3in (107 x 65 x 33mm)