EXTECH SL400 Noise Dosimeter with USB Interface

Model # SL400

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)

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
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

Specifications	Range
Standards	IEC61252-1993, IEC67672-1-2003, ANSI S1.25-1992, ANSI S1.4-1983, ANSI S1.43-1997
Ranges (Accuracy)	30 to 90 dB, 50 to 110dB; C, Z Peak: 70 to 140dB / C and Z Peak: 90 to 143dB (Accuracy: ±1.4dB@94dB 1kHz)
Frequency Weighting	A, C, Z
Response Rate	Fast, Slow, Impulse
Bandwidth	20Hz to 8kHz
Memory	Dose: 10,000 points/SLM: 999,999 points
Criterion Level / Threshold Level	30 to 140dB in 0.1dB steps / 30 to 140dB in 0.1dB steps
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
Dimensions/Weight	4.2 x 2.6 x 1.3″ (107 x 65 x 33mm) – exclude connector on top/ 7oz. (198g) include batteries and microphone cable